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USER GUIDE
Publication AP7028
Allen & Heath 3 ZED-4 BUS User Guide
Limited One Year Warranty
This product is warranted to be free from defects in materials or
workmanship for period of one year from the date of purchase by the
original owner.
To ensure a high level of performance and reliability for which this
equipment has been designed and manufactured, read this User Guide
before operating. In the event of a failure, notify and return the
defective unit to ALLEN & HEATH Limited or its authorised agent as
soon as possible for repair under warranty subject to the following
conditions
Conditions Of Warranty
The equipment has been installed and operated in accordance with the
instructions in this User Guide.
The equipment has not been subject to misuse either intended or
accidental, neglect, or alteration other than as described in the User
Guide or Service Manual, or approved by ALLEN & HEATH.
Any necessary adjustment, alteration or repair has been carried out by
ALLEN & HEATH or its authorised agent.
This warranty does not cover fader wear and tear.
The defective unit is to be returned carriage prepaid to ALLEN &
HEATH or its authorised agent with proof of purchase.
Units returned should be packed to avoid transit damage.
In certain territories the terms may vary. Check with your ALLEN &
HEATH agent for any additional warranty which may apply.
This product complies with the European Electro magnetic Compatibility
directives 89/336/EEC & 92/31/EEC and the European Low Voltage
Directives 73/23/EEC & 93/68/EEC.
This product has been tested to EN55103 Parts 1 & 2 1996 for use in
Environments E1, E2, E3, and E4 to demonstrate compliance with the
protection requirements in the European EMC directive 89/336/EEC.
During some tests the specified performance figures of the product were
affected. This is considered permissible and the product has been passed as
acceptable for its intended use. Allen & Heath has a strict policy of
ensuring all products are tested to the latest safety and EMC standards.
Customers requiring more information about EMC and safety issues can
contact Allen & Heath.
ZED 4 BUS User Guide AP7028 Issue 1
Copyright © 2007 Allen & Heath Limited. All rights reserved
Allen & Heath Limited
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Allen & Heath 4 ZED-4 BUS User Guide
PACKED ITEMS
Check that you have received the following:
Mains Lead
Check that the correct
mains plug is fitted.
ZED-420, ZED428 or ZED-436 MIXER
Type A-B USB Lead
To connect the ZED to
your computer.
SONAR LE
Music Software Install disk.
MIC
INSERT
LINE
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
1
DIR OUT
48V
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
2
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
3
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
4
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
5
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
6
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
7
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
8
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
9
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
10
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
11
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
12
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
13
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
14
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
15
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
16
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
25-26
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
EQ IN
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
ST1
IN
R
ST2
L/M
R
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
PFL PFL PFL PFL PFL P FL PFL P FL PFL PFL PFL PFL P FL PFL
ST3
L
R
ST4
L/M
R
STEREO INPUTS
ST2
LEV
IN
IN IN
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
0
10
OO
30
20
27-28
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
17
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
MIC
INSERT
LINE
DIR OUT
48V
17
17
17
17
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OUT
M
PHONES
MIN MAX
TB MIC
MIN MAX
M
LR
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1 -4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE MUTE MUTE
AUX1
AFL
AUX2
AFL
AUX3
AFL
AUX4
AFL
AUX5
AFL
AUX6
AFL
GRP
L R M
L-R
M
L-R
M
L-R
M
00
1 2 3 4
USB
2TRK
PLAYBACK SOURC E
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEND SOURCE
ST3 INPUT SOURC E
USB
ST3 IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
18
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
18
18
18
18
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
19
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
19
19
19
19
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
20
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
20
20
20
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
21
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
21
21
21
21
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
22
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
22
22
22
22
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
23
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
23
23
23
23
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
24
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
24
24
24
24
IN IN IN IN IN IN IN IN IN IN IN IN IN I N IN IN IN IN IN IN IN IN IN IN
L R M
MATRIX
2
MATRIX
1
GRP
2
GRP
3
GRP
4
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
M
L-R
1-2
3-4
M
L-R
1-2
3-4
OO +1 0
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
PFL
SONAR LE
cakewalk
INSTALL
Allen & Heath 5 ZED-4 BUS User Guide
SAFETY INSTRUCTIONS
WARNINGS
-
Read the following before proceeding :
CAUTION
ATTENTION: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
Read instructions:
Retain these safety and operating instructions for future reference. Adhere to all warnings printed here
and on the console. Follow the operating instructions printed in this User Guide.
Do not remove cover:
Operate the console with its covers correctly fitted.
Power sources:
Connect the console to a mains power unit only of the type described in this User Guide and marked
on the rear panel. Use the power cord with sealed mains plug appropriate for your local mains sup-
ply as provided with the console. If the provided plug does not fit into your outlet consult your service
agent for assistance.
Power cord routing:
Route the power cord so that it is not likely to be walked on, stretched or pinched by items placed
upon or against it.
Grounding:
Do not defeat the grounding and polarisation means of the power cord plug. Do not remove or tam-
per with the ground connection in the power cord.
Water and moisture:
To reduce the risk of fire or electric shock do not expose the console to rain or moisture or use it in
damp or wet conditions. Do not place containers of liquids on it which might spill into any openings.
Ventilation:
Do not obstruct the ventilation slots or position the console where the air flow required for ventilation
is impeded. If the console is to be operated in a rack unit or flightcase ensure that it is constructed to
allow adequate ventilation.
Heat and vibration:
Do not locate the console in a place subject to excessive heat or direct sunlight as this could be a fire
hazard. Locate the console away from any equipment which produces heat or causes excessive vi-
bration.
Servicing:
Switch off the equipment and unplug the power cord immediately if it is exposed to moisture, spilled
liquid, objects fallen into the openings, the power cord or plug become damaged, during lightening
storms, or if smoke, odour or noise is noticed. Refer servicing to qualified technical personnel only.
Installation:
Install the console in accordance with the instructions printed in this User Guide. Do not connect the
output of power amplifiers directly to the console. Use audio connectors and plugs only for their
intended purpose.
!
WARNING: This equipment must be earthed.
Allen & Heath 6 ZED-4 BUS User Guide
SAFETY INSTRUCTIONS
TERMINAL WIRE COLOUR
European USA/Canada
L
LIVE BROWN BLACK
N
NEUTRAL BLUE WHITE
E
EARTH GND GREEN & YELLOW
GREEN
Important Mains plug wiring instructions
The console is supplied with a moulded mains plug fitted to the AC
mains power lead. Follow the instructions below if the mains plug has to
be replaced. The wires in the mains lead are coloured in accordance
with the following code:
!
The wire which is coloured Green and Yellow must be connected to the
terminal in the plug which is marked with the letter E or with the Earth sym-
bol. This appliance must be earthed.
The wire which is coloured Blue must be connected to the terminal in the
plug which is marked with the letter N.
The wire which is coloured Brown must be connected to the terminal in the
plug which is marked with the letter L.
Ensure that these colour codes are followed carefully in the event of the
plug being changed.

General Precautions:
Damage :
To prevent damage to the controls and cosmetics avoid placing heavy objects
on the control surface, scratching the surface with sharp objects, or rough
handling and vibration.
Environment :
Protect from excessive dirt, dust, heat and vibration when operating and stor-
ing. Avoid tobacco ash, smoke, drinks spillage, and exposure to rain and mois-
ture. If the console becomes wet, switch off and remove mains power imme-
diately. Allow to dry out thoroughly before using again.
Cleaning :
Avoid the use of chemicals, abrasives or solvents. The control panel is best
cleaned with a soft brush and dry lint-free cloth. The faders, switches and po-
tentiometers are lubricated for life. The use of electrical lubricants on these
parts is not recommended. The fader and potentiometer knobs may be re-
moved for cleaning with a warm soapy solution. Rinse and allow to dry fully
before refitting them.
Transporting :
The console may be transported as a free-standing unit or mounted in a rack
or flightcase. Protect the controls from damage during transit. Use adequate
packing if you need to ship the unit.
Hearing :
To avoid damage to your hearing do not operate any sound system at exces-
sively high volume. This applies particularly to close-to-ear monitoring such as
headphones and in-ear systems. Continued exposure to high volume sound
can cause frequency selective or wide range hearing loss.
Allen & Heath 7 ZED-4 BUS User Guide
CONTENTS
Thank you for purchasing your Allen & Heath ZED mixer. To ensure that
you get the maximum benefit from the unit please spare a few minutes
familiarizing yourself with the controls and setup procedures outlined in
this user guide. For further information please refer to the additional
information available on our web site, or contact our technical support
team.
http://www.allen-heath.com
http://www.allen-heath.com/zed
http://www.myspace.com/thezedspace
Warranty ............................................. 3
Packed Items....................................... 4
Safety Instructions ............................. 5
Contents.............................................. 7
Panel Drawings................................... 8
Introduction to ZED......................... 11
Specifications ...................................... 12
Dimensions ......................................... 13
Block Diagram.................................... 14
Mono Input Channel ......................... 15
Stereo Input Channel........................ 19
Matrix Outputs & Aux Masters....... 22
Group Masters ................................... 23
L R & M Masters & Headphones .... 24
Main Meters and Talkback ................ 25
USB Selection and Playback............. 26
USB Connection ................................ 27
SONAR LE software introduction . 28
SONAR LE installation ..................... 29
Configuring SONAR LE with ZED. 29
Using USB for effects........................ 32
Wiring Notes ..................................... 33
Product Support ................................ 34
Allen & Heath 8 ZED-4 BUS User Guide
PANEL DRAWINGS—ZED420
MIC
INSERT
LINE
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
1
DIR OUT
48V
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
2
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
3
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
4
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
5
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
6
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
7
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
8
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
9
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
10
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
11
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
12
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
13
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
14
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
15
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
16
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17-18
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
EQ IN
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
ST1
IN
R
ST2
L/M
R
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
PFL PFL PFL PFL PFL PFL PFL PFL PF L PFL PF L PFL PFL P FL
ST3
L
R
ST4
L/M
R
STEREO INPUTS
ST2
LEV
IN
IN IN
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
0
10
OO
30
20
19-20
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OUT
M
PHONES
MIN MAX
TB MIC
MIN MAX
M
LR
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE MUT E MUTE
AUX1
AFL
AUX2
AFL
AUX3
AFL
AUX4
AFL
AUX5
AFL
AUX6
AFL
GRP
L R M
L-R
M
L-R
M
L-R
M
00
1 2 3 4
USB
2TRK
PLAYBA CK SOURCE
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEND SOUR CE
ST3 INPUT S OURCE
USB
ST3 IN
IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN
L R M
MATRIX
2
MATRIX
1
GRP
2
GRP
3
GRP
4
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
M
L-R
1-2
3-4
M
L-R
1-2
3-4
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
AC MAINS IN ~
100 - 240V~ 47-63Hz 60W MAX
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
REPLACE FUSE WITH SAME TYPE AND RATING.CAUTION: FOR CON TINUED PROTECTION AGAINST RISK OF FIRE
ATTENTION: REMPLACER PAR UN FUSIBLE STRICTEMENT IDENTIQUE EN VALEURS.
DO NOT OPEN
CAUTION
RISK OF ELECTRIC SHOCK
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
ALLEN&HEATH
OFF
0
I
ON
WARNING: THIS APPARATUS MUST BE EARTHED
Serial No.
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED.
(2) this devic e must accept any interference received,
This device c omplies with Part 15 of the FCC Rules.
(1) this devic e may not cause harmful interference, and
Operation is sub ject to the following two conditions :
including interfe rence that may cause undesired operation.
T1.6A L 250V 20mm
FUSE
PFL
Allen & Heath 9 ZED-4 BUS User Guide
PANEL DRAWINGS—ZED428
MIC
INSERT
LINE
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
1
DIR OUT
48V
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
2
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
3
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
4
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
5
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
6
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
7
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
8
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
9
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
10
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
11
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
12
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
13
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
14
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
15
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
16
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
25-26
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
EQ IN
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
ST1
IN
R
ST2
L/M
R
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL
ST3
L
R
ST4
L/M
R
STEREO INPUTS
ST2
LEV
IN
IN IN
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
0
10
OO
30
20
27-28
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
17
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
MIC
INSERT
LINE
DIR OUT
48V
17
17
17
17
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OUT
M
PHONES
MIN MAX
TB MIC
MIN MAX
M
LR
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE MUTE M UTE
AUX1
AFL
AUX2
AFL
AUX3
AFL
AUX4
AFL
AUX5
AFL
AUX6
AFL
GRP
L R M
L-R
M
L-R
M
L-R
M
00
1 2 3 4
USB
2TRK
PLAYBACK SOURCE
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEND SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
18
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
18
18
18
18
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
19
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
19
19
19
19
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
20
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
20
20
20
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
21
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
21
21
21
21
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
22
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
22
22
22
22
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
23
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
23
23
23
23
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
24
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
24
24
24
24
IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN I N IN IN
L R M
MATRIX
2
MATRIX
1
GRP
2
GRP
3
GRP
4
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
M
L-R
1-2
3-4
M
L-R
1-2
3-4
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
AC MAINS IN ~
100 - 240V~ 47-63Hz 60W MAX
REFER SERVIC ING TO QUALIFIED SERVICE PERSONNEL.
REPLACE FUSE WITH SAME TYPE AND RATING.CAUTION: FOR C ONTINUED PROTECTION AGAINST RISK OF FIRE
ATTENTION: RE MPLACER PAR UN FUSIBL E STRICTEMENT IDENTIQUE EN VALE URS.
DO NOT OPEN
CAUTION
RISK OF ELEC TRIC SHOCK
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
WARNING: TO RE DUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE T HIS APPARATUS TO RAIN OR MOISTURE.
ALLEN&HEATH
OFF
0 I
ON
WARNING: T HIS APPARATUS MUST BE EARTHED
Serial No.
ENGINEERE D IN ENGLAND BY ALLEN & HEATH LIMITED.
(2) this device must accept any interference received,
This device c omplies with Part 15 of the FCC Rules.
(1) this device may not cause harmful interference, and
Operation is subject to the foll owing two condition s:
including inte rference that m ay cause undesired operation.
T1.6A L 250V 20mm
FUSE
PFL
Allen & Heath 10 ZED-4 BUS User Guide
PANEL DRAWINGS—ZED436
AC MAI NS IN ~
100 - 240V~ 47-63Hz 60W MAX
REFER SERVIC ING TO QUALIFIED SERVICE PERSONNEL .
REPLACE FUS E WITH SAME TYPE AND RATI NG.CAUTION: FOR CONTINUED PROTECTI ON AGAINST RISK OF FIRE
ATTENTION: REMPLA CER PAR UN FUSIB LE STRICTEMENT IDENTIQUE EN VALEURS.
DO NOT OPEN
CAUTION
RISK OF ELECTRIC SHOCK
AVIS: RISQUE DE CHOC ELECTRI QUE - NE PAS OUVRIR.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOS E THIS APPARATUS TO RAIN OR MOISTURE.
ALLEN&HEATH
OFF
0 I
ON
WARNING: THIS APPARATUS MUST BE EART HED
Serial No.
ENGINEERED I N ENGLAND BY ALLEN & HEATH LIMI TED.
(2) this device mus t accept any interference received,
This device compli es with Part 15 of the FCC Rules.
(1) this device may no t cause harmful interference, and
Operation is s ubject to the following two conditions:
including interference that may cause undesired operation.
T1.6A L 250V 20mm
FUSE
MIC
INSERT
LINE
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
1
DIR OUT
48V
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
2
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
3
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
4
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
5
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
6
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
7
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
8
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
9
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
10
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
11
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
12
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
13
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 2 6
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
14
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
15
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
16
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OU T
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OU T
48V
MIC
INSERT
LINE
DIR OU T
48V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
33-34
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
EQ IN
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
ST1
IN
R
ST2
L/M
R
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL
ST3
L
R
ST4
L/M
R
STERE O INPUTS
ST2
LEV
IN
IN IN
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
0
10
OO
30
20
35-36
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
17
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
MIC
INSERT
LINE
DIR OUT
48V
17
17
17
17
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OU T
M
PHONES
MIN MAX
TB MIC
MIN MA X
M
LR
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE MUTE MU TE
AFL AFL AFL AFL AFL AFL
GRP
L R M
L-R
M
L-R
M
L-R
M
00
1 2 3 4
USB
2TRK
PLAYBACK SOURC E
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEN D SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
18
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
18
18
18
18
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
19
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
19
19
19
19
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
20
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
20
20
20
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
21
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
21
21
21
21
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
22
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
22
22
22
22
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
23
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
23
23
23
23
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
24
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OU T
48V
24
24
24
24
IN IN IN I N IN IN IN IN IN IN IN I N I N I N IN IN IN IN IN I N IN IN IN IN
L R M
MATRIX
2
MATRIX
1
GRP
2
GRP
3
GRP
4
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
M
L-R
1-2
3-4
M
L-R
1-2
3-4
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
25
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
25
25
25
25
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
26
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
26
26
26
26
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
27
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
27
27
27
27
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
28
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
28
28
28
28
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
29
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
29
29
29
29
IN
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
30
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
30
30
30
30
IN
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
31
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OU T
48V
31
31
31
31
IN
-6-10 6 3 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
32
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OU T
48V
32
32
32
32
IN
AUX1 AUX2 AUX3 AUX4 A UX5 AUX6
OO +10
0
OO +10
0
OO +1 0
0
OO +10
0
OO +10
0
OO +10
0
PFL
Allen & Heath 11 ZED-4 BUS User Guide
INTRODUCTION TO THE ZED-4 BUS MIXERS
A Technical Overview:
The Allen & Heath ZED-4 mixer has been carefully and lovingly designed in the beautiful county of Cornwall in the UK and is
manufactured alongside a wide range of professional audio mixing consoles. Many of the components used in ZED are exactly
the same as in the larger Allen & Heath products and the construction methods are also very similar — utilising individual ver-
tically mounted channel circuit boards with each rotary control fixed with a metal nut to the front panel. This provides a very
robust product that will resist damage and give years of reliable use. It also makes servicing much easier should it be required,
with the ability to remove one particular channel from the mixer at a time, or easily change a fader.
The audio circuitry is based on years of continual development and refinement, the performance of all the elements within the
mixer scrutinised and perfected to ensure the very best sound quality possible.
Mic/Line Pre-amps:
Based on the pre-amps from the PA series, the ZED series pre-amps use a two stage design, with carefully controlled amounts
of gain in each stage. When amplifying the signal from the XLR input, the gain range is huge — 69dB of range to be exact —
and is very evenly distributed around the gain control, meaning better control of signal level. Most of the gain comes from the
first stage, so unwanted noise is kept to a minimum. There is no “pad” switch, or pad circuit — line level signals are simply
plugged into the second stage of the pre-amp by using the line input jack socket. This has the great advantage of lower noise
when using the line input. (It is common to attenuate line level signals, the amplify them back up again which can give more
noise or hiss).
EQ:
The ZED-4 series mixers are equipped with a 4-band equaliser circuit on each input, based closely on the acclaimed GL2400
EQ. The frequency and response of each has been carefully chosen to give the maximum performance when using the EQ on a
variety of sources.
AUX system:
Six auxiliary sends are provided, two pre-fade, two post fade, and two switched pre or post fade. The Aux master level con-
trols are grouped nicely together in the master section and have AFL (after fade listen) switches for monitoring.
Groups:
The four sub-groups can be used for easy control of groups of inputs, or for applying signal processing such as compression to
groups of signals using the Group Insert connector. The groups have individual outputs and can also be sub-mixed to the main
L-R and Mono mixes.
Main Mix:
In addition to the main L-R stereo bus, there is a Mono bus which can be routed to individually, ideal for feeding low frequency
speaker systems, or creating a mono PA mix.
Mono and Stereo Channels:
The ZED-420, 428 and 436 models have a full complement of 16, 24 and 32 mono inputs respectively, plus two stereo chan-
nels, maximising the number of inputs you get. The Stereo channels are dual, so you can get 4 stereo inputs to mix before you
need to use any mono channels.
USB:
Getting audio to and from a computer easily is now a common requirement for live sound and music production. The way we
have implemented this on ZED is super-flexible and super-easy! No longer do you need to fiddle around the back of your PC
to get to the soundcard inputs, only to find that the levels are all wrong and noisy. Just plug in a USB lead to your ZED, select
the USB routing on the mixer and the device on your computer and that’s it! Quality audio to and from your PC or MAC.
As you can tell, we’re very proud of this product we hope you like it too!
Allen & Heath 12 ZED-4 BUS User Guide
SPECIFICATIONS
Operating Levels
Inputs
Mono channel (XLR) Input +6 to –63dBu for nominal (+17dBu in max)
Mono channel Line Input (Jack socket) +10 to –26dBu (+30dBu maximum)
Insert point (TRS Jack socket) 0dBu nominal +21dBu maximum
Stereo Input (Jack sockets) 0dBu nominal (control = Off to +10dB)
Stereo input (phono sockets) 0dBu nominal (control = Off to +10dB)
2 Track Input (phono sockets) 0dBu nominal +21dBu maximum
Outputs
L, R & Mono Outputs (XLR) +4dBu nominal. +27dBu maximum.
L, R & M Insert (TRS Jack socket) -2dBu nominal +21dBu maximum
Group Outputs (Jack sockets) +4dBu nominal. +27dBu maximum.
Group Insert (TRS Jack socket) -2dBu nominal +21dBu maximum
Aux Outputs (Jack sockets) -2dBu nominal +21dBu maximum (Bal Option +4)
Matrix Outputs (TRS Jack socket) -2dBu nominal. +21dBu maximum. (Bal Option +4)
2 Track Output (phono sockets) 0dBu nominal. +21dBu maximum.
Direct Out (TRS Jack socket) 0dBu nominal. +21dBu maximum.
Frequency Response
Mic in to Mix L/R Out, 30dB gain +0.5/-1dB 20Hz to 20kHz.
Line in to Mix L/R out 0dB gain +0.5/-1dB 10Hz to 30kHz
Stereo in to Mix L/R out +0.5/-1dB 10Hz to 30kHz
THD+n
Mic in to Mix L/R Out, 0dB gain 1kHz +10dBu out 0.004%
Mic in to Mix L/R Out, 30dB gain 1kHz 0.014%
Line in to Mix L/R out 0dB gain 0dBu 1kHz 0.005%
Stereo in to Mix L/R out 0dB gain +10dBu 1kHz 0.003%
Headroom
Analogue Headroom from nominal (0Vu) 21dB
USB in & out headroom from nominal (0Vu) 14dB
USB Audio CODEC (Coder/Decoder)
USB Audio In/Out USB 1.1 compliant 16bit.
Sample Rate 32, 44.1, or 48kHz
Noise
Mix Noise, LR out, 16 channels routed, Ref +4dBu, 22-22kHz -90dB (-86dBu)
Mix Noise, LR out, 24 channels routed, Ref +4dBu, 22-22kHz -89dB (-85dBu)
Mix Noise, LR out, 32 channels routed, Ref +4dBu, 22-22kHz -88dB (-84dBu)
Mic Pre EIN @ max gain 150R input Z 22-22kHz -127dBu
Allen & Heath 13 ZED-4 BUS User Guide
560mm
(22.1 inches)
Dimensions
Weight kg (lb)
Model Packed
ZED-420 17.5 (38.5 lb)
Unpacked
14 (31 lb)
ZED-428 18 (40 lb) 22.5 (56.25 lb)
ZED-436 22 (48.5 lb) 26.5 (58.3 lb)
MIC
INSERT
LINE
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
1
DIR OUT
48V
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
2
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
3
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
4
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
5
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
6
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
7
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
8
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
9
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
10
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
11
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
12
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
13
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
14
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
15
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
16
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
EQ IN
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
SIG
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
MIC
INSERT
LINE
DIR OUT
48V
1 2 3 4 5 6 7 8 9 1 0 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 1 0 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 1 0 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 1 0 11 12 13 14 15 16
33-34
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
HF
12k
EQ IN
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
ST1
IN
R
ST2
L/M
R
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL PFL
ST3
L
R
ST4
L/M
R
STEREO INPUTS
ST2
LEV
IN
IN IN
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
0
10
OO
30
20
35-36
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
17
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
MIC
INSERT
LINE
DIR OUT
48V
17
17
17
17
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OUT
M
PHONES
MIN MA X
TB MIC
MIN MAX
M
LR
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE MUTE MUTE
AFL AFL AFL AFL AFL AFL
GRP
L R M
L-R
M
L-R
M
L-R
M
00
1 2 3 4
USB
2TRK
PLAYBACK SOURCE
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEND SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
18
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
18
18
18
18
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
19
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
19
19
19
19
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
20
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
20
20
20
20
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
21
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
21
21
21
21
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
22
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
22
22
22
22
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
23
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
23
23
23
23
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
24
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
24
24
24
24
IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN I N IN IN IN
L R M
MATRIX
2
MATRIX
1
GRP
2
GRP
3
GRP
4
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
0
M
L-R
1-2
3-4
M
L-R
1-2
3-4
M
L-R
1-2
3-4
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
25
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
25
25
25
25
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
26
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
26
26
26
26
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
27
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
27
27
27
27
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
28
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
28
28
28
28
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
29
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
29
29
29
29
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
30
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
30
30
30
30
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
31
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
31
31
31
31
IN
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
32
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
HPF
100Hz
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
0
10
OO
30
20
MIC
INSERT
LINE
DIR OUT
48V
32
32
32
32
IN
AUX1 AUX2 AUX3 AUX4 AUX5 AUX6
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
PFL
ZED-420 = 715mm (28.2 inches)
ZED-428 = 930mm (36.6 inches)
ZED-436 = 1135mm (44.7 inches)
120
129
50
R
2
3
Allen & Heath 14 ZED-4 BUS User Guide
BLOCK DIAGRAM
+
-
GAIN
HM HF
4 BAND EQUALISER
MONO CHANNEL
ZED-4 BLOCK DIAGRAM
100Hz
MIC IN
FADER
PFL
PEAK
STEREO CHANNEL
AUX1
AUX 2
LF
ST1
R
L
R
L
GAIN
STEREO INPUT 1
+
+
-
LINE IN
+48V
INSERT
MUTE
PAN
GAIN
LR
SUM
HF
4 BAND EQUALISER
LF
L INSERT
R INSERT
LEFT
RIGHT
MAIN LR
HPF
PFL/AFL
RIGHT
LEFT
CHAN
MAIN OUT
PHANTOM POWER SWITCH
+4dBu NOMINAL
LM
EQ
IN
MONO
L-R
1-2
3-4
M
AUX3
AUX 4
AUX5
AUX 6
PRE
DIRECT OUT
SIGNAL
HFLF
EQ
IN
FADER
PFL
AUX1
AUX 2
MUTE
BAL
L-R
1-2
3-4
M
AUX3
AUX 4
AUX5
AUX 6
PRE
+
+ +
GROUP 2
GROUP 1
GROUP 3
AUX 1
GROUP 4
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
+
+
PEAK
SIGNAL
ST3
R
L GAIN
STEREO INPUT 3
LR
CHAN
MIX BUSES
BALANCED
M INSERT
MONO
AUX1
MASTER LEVEL
AUX1
+4dBu NOMINAL
BALANCED OPTION
-2dBu NOMINAL
IMPEDANCE BALANCED
FACTORY FIT
SERVICE CENTRE OPTION FIT
AFL
GROUP1 INSERT
GROUP1
AFL
+4dBu NOMINAL
BALANCED
GROUP1 FADER
MTX 1-2
AUX 1-2
AUX 5-6
USB I/O
USB
RETURN
USB DEVICE
PRIORITY SWITCHING
L-R PRE
GRP1
MUTE
PAN
L-R
M
METER
GRP2 GRP3 GRP4 L R M
MATRIX1
MASTER LEVEL
MATRIX1
+4dBu NOMINAL
BALANCED OPTION
-2dBu NOMINAL
IMPEDANCE BALANCED
FACTORY FIT
SERVICE CENTRE OPTION FIT
MINI BUS
AFL
L-R POST
FROM MATRIX 2
FROM AUX 2
FROM AUX 6
FROM AUX 5
LR / M
METERS
PHONES
LEVEL
HEADPHONES
PFL/AFL
PFL ACTIVE
GROUPS 2 TO 4 THE SAME
AUXES 2 TO 6 THE SAME
TALKBACK
ON
48V PHANTOM POWER
OFF
MIC IN
TALKBACK
BALANCED
2= +
GAIN
ST3 INPUT SOURCE
USB RETURN
PLAYBACK
LEVEL
2 TRACK IN
R
L
PLAYBACK
SOURCE
L-R
PFL
+
AUX 1-4
L-R-M
TIP SEND
TIP SEND
TIP SEND
TIP SEND
+10dB
+10dB
+10dB
+10dB
R
L
FACTORY SOLDER LINK
FACTORY SOLDER LINK
USB
OUTPUT
USB
OUTPUT
RECORD
OUTPUT
L R
ST2
MAIN M
MUTE
MUTE
MUTE
MATRIX 2 THE SAME
Allen & Heath 15 ZED-4 BUS User Guide
MONO INPUT CHANNEL
1
2
3
4
5
1
Microphone Input Socket
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
2
Line Input Jack Socket
Standard 1/4” (6.25mm) Jack socket for balanced or unbalanced line
level signals. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis.
The Line input overrides the Mic input, so if you want to hear some-
thing plugged in to the xlr socket, make sure nothing is plugged into
the Line input.
3
Insert Jack Socket
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis.
Nominal level is 0dBu. The insert point is after the 100Hz filter and
before the EQ.
4
Gain Control
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from –6dB (attenuation) to +63dB
for signals plugged in to the xlr socket (Mic Input) and –10dB to
+26dB for signals plugged into the Line input jack.
5
100Hz Hi-pass Filter
The Hi-pass filter is used for reducing pop noise and rum-
ble from microphone signals. It is a 2-pole (12dB per oc-
tave) filter with a corner frequency set at 100Hz.
The filter affects signals from both Mic XLR and Line jack
socket.
10.00 Hz 100.00 1000.00 10000.00 30000.00
-50.00
-40.00
-30.00
-20.00
-10.00
0.00
10.00
dBr
6
6
48V Phantom Power Switch
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
MIC
INSERT
LINE
-6-10 63 26
GAIN
MIC
0
LINE
10
0
10
20
30
40
50
DIR OUT
48V
HPF
100Hz
1
1
1
1
IN
Direct Output Socket
Standard 1/4” (6.25mm) Jack socket. Wired Tip=Hot(+),
Ring=cold (-), Sleeve=Chassis. For recording individual channels,
factory default is prefade signal (post mute).
The nominal level is 0dBu and the output is impedance balanced.
7
7
Allen & Heath 16 ZED-4 BUS User Guide
MONO INPUT CHANNEL
7
8
HMF EQ
The HMF (High Mid Frequency) equaliser affects the upper middle
of the audible frequency range. The frequency graduations on the
sweep control are the centre frequencies of the EQ.
HF EQ
The HF (High Frequency) equaliser affects the frequency response
of the higher audible frequencies. The corner frequency of 12kHz is
around 3dB from the maximum cut or boost of the circuit.
6
-15
LF
-15
+15
+15
180
45
LM
35Hz
70
-15
400
1k
250
+15
3k
HM
700
500Hz
-15
1k
6k
15k
4k
+15
HF
EQ IN
12k
80Hz
7
8
6
20.00 Hz 100.00 1000.00 10000.00 30000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
20.00 Hz 100.00 1000.00 10000.00 30000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
LMF EQ
The LMF (Lower Mid Frequency) equaliser affects the lower middle
of the audible frequency range.
20.00 Hz 100.00 1000.00 10000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
Allen & Heath 17 ZED-4 BUS User Guide
LF EQ
The LF (Low Frequency) equaliser affects the response at the low
end of the audio range. The graph shows the response of the LF EQ
at maximum cut and boost. The corner frequency is 80Hz.
MONO INPUT CHANNEL
9
10
11
11
12
9
Auxes 1 & 2
Each of these controls sends a signal to an auxiliary bus. The signal is
sourced pre-fade which means that the level is independent of, and
unaffected by the fader. Auxes 1 & 2 are primarily used for foldback
monitoring purposes, as the fader does not affect the level. They can
also be used as feeds for recording and are available sources to the
USB interface for this purpose.
These sends are affected by the Mute switch, so muting the channel
will also mute the Aux sends.
The control varies the signal level to the bus from off (fully attenu-
ated) to +6dB, with unity gain at the arrow.
There are master level controls for all of the Aux outputs situated in
the master section of the mixer.
10
Auxes 3 & 4
These are switched pre or post-fade so they can be used as either
monitor sends or effects sends.
12
13
20.00 Hz 100.00 1000.00 10000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
EQ IN
The EQ IN switch enables the equaliser when pushed in. The EQ is
bypassed when the switch is in its up position.
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
OO
OO
OO
-15
LF
+15
EQ IN
80Hz
Auxes 5 & 6
Sourced post fade, so that the level is set with the send control but
will be affected by the fader position. Mainly used for effects.
13
Allen & Heath 18 ZED-4 BUS User Guide
14
PAN
The pan control adjusts how the signal from the mono input channel is
shared between the left and right buses and subsequently the main stereo
outputs, similarly to pairs of Groups. Set to the mid position, equal amounts
of signal are fed to left and right, with pan set to L, none is sent to the Right
bus.
PFL Switch
The PFL (Pre-Fade Listen) switch sends the channel signal to the PFL bus
and subsequently to the headphones and the main L R meters. Used for
checking the audio signal before raising the fader or un-muting the channel.
15
Mute Switch
This mutes or cuts the signal to the buses and the Direct Out. A rectangular
LED illuminates to show the Mute switch is pressed.
14
Routing Switches
The routing switches connect the post-fade signal to the mix buses via the
pan control for the main LR bus and the group buses. For minimum noise
from the mix bus summing amplifier, leave the switches in their up positions
if the channel signal is not required on the bus.
MONO INPUT CHANNEL
1
ODD
PAN
L
EVEN
R
=
MUTE
PK !
PFL
SIG
M
L-R
1-2
3-4
10
OO
30
20
0
15
Signal & PK! LED
The Signal LED illuminates dimly at a threshold of –16dB nominal level and
gets brighter with higher level signal. The source for the signal & peak LED’s
is just after the EQ IN switch.
The PK! LED illuminates when the signal just after the EQ IN switch is
within 5dB of clipping.
16
17
18
16
17
18
19
19
Fader
The 100mm fader affects the level of the channel signal to the left & right,
mono and group buses and Auxes 5 & 6. Also Auxes 3 & 4 if switched to
post-fade. There is 10dB of gain at the top and the unity gain position is
marked by “0”.
Allen & Heath 19 ZED-4 BUS User Guide
STEREO INPUT CHANNEL
2
4
1
ST1 (& ST3) Phono sockets
These are stereo inputs additional to the main stereo channel in-
puts (below). The gain is varied by the ST1 (& ST3) level control
and these inputs can be sent to either the stereo channels or
straight to the L R main bus, depending on the setting of the under-
panel switch. These inputs are unbalanced.
The source for the ST3 input can be switched from the phono
sockets to the USB return signal with the selector switch below the
USB socket
.
1
5
3
2
Stereo Inputs 1 (& 3) Level control
Adjust the level of the stereo inputs 1 & 3 from off (fully attenu-
ated) to maximum where it has 10dB of gain.
3
4
5
ST1 (& 3) Routing selector switch
This switch selects whether the ST1 (or ST3) signal is sent to the L
R bus directly, or the stereo channel below. When it is pressed in,
the ST1 (or ST3) signal sums together with the main stereo inputs
ST2 (or ST4).
ST2 (& ST4) input jack sockets
Standard 1/4” jack sockets for line level stereo signals. Can be used
with a mono input where the L/M input will also connect to the R
input if nothing is plugged in to R.
The Stereo 1 inputs accept unbalanced or balanced signals.
Stereo Input ST2 (& ST4) Level control
Adjusts the level of the ST2 (& ST4) input. The range is from off to
+10dB.
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
ST1
IN
R
ST2
L/M
R
ST2
LEV
IN
L
Allen & Heath 20 ZED-4 BUS User Guide
STEREO INPUT CHANNEL
STEREO Channel EQ
The EQ on the stereo Channel is 4 band, fixed frequency and com-
prises a shelving high frequency section, a shelving low frequency
section and two fixed mid frequency controls.
6
7
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
20.00 Hz 100.00 1000.00 10000.00 30000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
STEREO HF EQ
STEREO LF EQ
10.00 Hz 100.00 1000.00 10000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
10.00 Hz 100.00 1000.00 10000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
STEREO LMF AND HMF EQ
EQ IN
The EQ IN switch enables the
equaliser when pushed in. The
EQ is bypassed when the switch
is in its up position.
6
7
Allen & Heath 21 ZED-4 BUS User Guide
8
9
10
11
Balance control
The Balance control varies the relative levels between the left and right
channels.
12
Mute Switch
Mutes the signals to the main L R, M and Group buses as well as the Aux
sends.
13
17-18
+6
AUX1
PRE
+6
AUX2
PRE
+6
AUX3
+6
AUX4
PRE
POST
OO
OO
OO
OO
+6
AUX5
POST
+6
AUX6
POST
OO
OO
ODD
BAL
L
EVEN
R
=
MUTE
PFL
PK !
SIG
10
OO
30
20
0
M
L-R
1-2
3-4
STEREO INPUT CHANNEL
8
Auxes 1 & 2
Auxes 1 & 2 send a mono sum of the stereo channel left & right signals
sourced from pre-fader.
Auxes 3 & 4
Again, a mono sum of the stereo channel left & right signals, the source be-
ing switchable pre or post fader.
Auxes 5 & 6
Auxes 5 & 6 take their source from a mono sum of the stereo channel left &
right signals after the fader.
9
10
11
12
PFL Switch
The PFL (Pre-Fade Listen) switch sends a mono sum of the stereo channel
channel signal to the PFL bus.
Routing Switches
The routing switches connect the post-fade signal to the mix buses via the
balance control for L_R and the groups. For minimum noise from the mix
bus summing amplifier, leave the switches in their up positions if the channel
signal is not required on the bus.
Signal & PK! LED
The Signal LED illuminates dimly at a threshold of –16dB on either left or
right channels and gets brighter with higher level signal. The source for the
signal & peak LED’s is just after the EQ IN switch.
The PK! LED illuminates when the signal just after the EQ IN switch is
within 5dB of clipping.
Fader
The 100mm fader affects the level of the channel signal to the left & right,
mono and group buses and Auxes 5 & 6. Also Auxes 3 & 4 if switched to
post-fade. There is 10dB of gain at the top and the unity gain position is
marked by “0”.
13
14
14
15
15
16
16
Allen & Heath 22 ZED-4 BUS User Guide
MATRIX OUTPUTS & AUX MASTERS
Matrix Outputs
There are two matrix sub-mix sections in ZED-4. The send controls
(black & red knobs) take the post-fade signals from the Group, Left,
Right and Mono mix paths and send them to the Matrix output. Matrix
outputs 1 & 2 are individual mono outputs. There is a master level con-
trol to adjust the overall output level, and an AFL (after fade listen)
switch to check the Matrix mix.
Uses for Matrix outputs include:
Record feeds. Enabling a different mix from the main PA mix to
be recorded, where more of the backline sound can be dialled in
to the record mix if it is low in the main PA mix.
Zone feeds. For creating individual outputs for different areas to
the main PA arena.
Delay stack feeds. Enabling individual mix and level control of
delayed speakers in large auditoriums.
Broadcast feeds for live events that are “on air” or “on line!”
The Matrix and the Auxiliary outputs are impedance balanced as stan-
dard from the factory. There is the option to fit balanced drivers at a
service centre convert the outputs to be fully electronically balanced.
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
MATRIX
2
MATRIX
AUX1
AFL
AUX2
AFL
AUX3
AFL
AUX4
AFL
AUX5
AFL
AUX6
AFL
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
OO +10
0
Auxiliary Output Master Level controls
The Aux master level controls adjust the overall level of each of the
Aux mixes 1 to 6. The range of control is from off (fully attenuated) to
+10dB.
There is an AFL (after fade listen) switch on each Aux mix to check the
signal after the master level control.
Allen & Heath 23 ZED-4 BUS User Guide
GROUP MASTERS
Group Fader
The Group fader is fed with the Group mix signal via
the Group Insert point. The fader has 100mm of
travel and there is +10dB of gain at its maximum
position.
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
L-R
M
PAN
L R
=
PAN
L R
=
PAN
L R
=
PAN
L R
=
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE
AFL
MUTE
AFL
MUTE
AFL
MUTE
AFL
GRP
L-R
M
L-R
M
L-R
M
1 2 3 4
1
GRP
2
GRP
3
GRP
4
6
5
4
3
2
1
Group AFL
The AFL switch allows monitoring of the Group
signal after the fader but before the Mute switch.
Group Mute
The illuminated Mute switch cuts the Group signal
from the Group output, sub routing and the Group
meter.
The Group signal to the Matrix outputs is also cut
with the Mute switch.
Group Meter
A 4 LED bar meter to show the level of signal on
the Group output.
The thresholds are:
Sig = -18dB nominal, 0dB, +6dB, Pk=+16dB.
0dB on the meter = +4dBu at the balanced output.
Group Pan
The Pan controls how the Group signal is shared
between the Left & Right main mix buses when sub-
routed. The Group output is unaffected by the Pan
control.
Group Sub Routing
The L-R switch routes the panned Group signal to
the main LR mix and the M switch routes the un-
panned Group signal to the mono bus.
If you want to set up a stereo pair of sub-groups and
route them to the main LR mix, make sure the odd
numbered Group is panned Left and the Even Group
is panned Right.
1
2
3
4
5
6
Allen & Heath 24 ZED-4 BUS User Guide
L R & M MASTERS and HEADPHONES
Warning ! To avoid
damage to your hearing do
n o t o p e r a t e t h e
headphones or sound
system at excessively high
volume. Continued
exposure to high volume
sound can cause frequency
selective or wide range
hearing loss.
!
MIN MAX
M
LR
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
OO
30
5
10
20
5
0
10
PK!
+6
0
SIG
PK!
+6
0
SIG
PK!
+6
0
SIG
MUTE MUTE MUTE
L R M
LEVEL
PHONES
L R M
1
Main Mix Fader
The L, R & M faders follow the mix insert points. The
faders have 100mm of travel and 10dB of gain at the
top.
2
Main Mix Mute
Cuts the signal from the main mix output. Illuminates
red when cut. Also cuts the signal from the associated
Matrix feed and the headphones monitor.
3
Main Mix Meter
A 4 LED bar meter to show the level of signal on the
associated output.
The thresholds are:
Sig = -18dB nominal, 0dB, +6dB, Pk=+16dB.
0dB on the meter = +4dBu at the balanced output.
4
Headphones Source & Level
The LR/M switch selects the signal source for the head-
phones, out for Left & Right, in for Mono. If any AFL or
PFL switch is pressed then this will override the source
selection.
The level control adjusts the volume of the headphone
signal.
1
2
3
4
Allen & Heath 25 ZED-4 BUS User Guide
1
MAIN METERS & TALKBACK
1
Main Meters
The main Left & Right meters will show the signal level
at the main LR mix outputs or the main M mix output
depending on the selector switch below the Phones
Level control. If any PFL or AFL switch is pressed the
meters will show that signal level. Basically, the meters
show the headphones monitor signal pre the head-
phones level control.
The PFL/AFL active LED illuminates if any PFL or AFL
switch is pressed.
Note that PFL and AFL monitoring will be in mono.
2
3
PHONES
MIN MAX
TB MIC
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
LEVEL
TB
2
Talkback
A microphone xlr connector is provided with phantom
power applied as a factory default.
The TB Level control varies the gain of the talkback
amplifier from 20dB (MIN) to 55dB (MAX).
The two switches send the talkback signal to Auxes 1
to 4 and to the main L, R & M mixes. When not using
talkback, it is best to leave these switches in their out
position.
3
Headphone Jack Sockets
Standard 1/4 inch and 3.5mm TRS jack sockets for ste-
reo headphones. Tip = Left.
Allen & Heath 26 ZED-4 BUS User Guide
5
6
4
1
USB SECTION & PLAYBACK
1
USB Send Source Selection
The USB source selection switches determine which signals are
sent out on the USB interface. If all the switches are up the
main LR mix post-fade signal is sent. Other sources available are
the pre-fade main LR mix, Auxes 5&6, Auxes 1&2 and Matrix
1&2.
The switches work on a priority system with the upper switch
taking priority—so if all the switches are pressed in for exam-
ple, the Matrix 1&2 would be selected as the source.
2
3
USB
SENDRETURN
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
USB
2TRK
PLAYBACK SOURCE
LEVEL
PLAYBACK
PFL
USB SEND SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
2
ST3 Input Source Selector
This switch determines the signal source for the ST3 input. In
the out position the source is the ST3 phono connectors, the in
position is the stereo USB return.
2
Playback Input Source Selector
This switch determines the signal source for the Playback input.
In the out position the source is the 2TRK IN phono connec-
tors, the in position is the stereo USB return.
4
USB Connector
Standard B type USB connector.
5
Playback Input Level
Controls the level of the playback signal from off (fully attenu-
ated) to +6dB.
6
Playback To LR
Routes the Playback signal (2 TRK IN or USB return) to the
main LR mix.
7
Playback PFL
Allows monitoring of the Playback signal (pre-Level) in head-
phones and on the main LR meters. Note the monitoring will
be in mono.
7
Allen & Heath 27 ZED-4 BUS User Guide
USB CONNECTION
If the volume is not fully up
like this…...
USB Audio Interface
The ZED is equipped with a stereo bi-directional USB 1.1 compliant audio CODEC. It is fully compliant with USB 2 ports
and uses standard Windows and MAC Core Audio Drivers. In other words, plug it in and your computer will find it and
be able to transfer audio to and from the ZED USB device.
You will need some form of audio software running on your computer to be able to record and play back what you re-
cord, but on a basic level, you can use your computers media player to play straight to the ZED device.
Just a couple of points to look out for:
1. When you plug in your ZED USB interface to your computer, check the device volume in:
Control Panel\Sounds & Audio Devices\Volume
Then drag it fully up
like this…...
Then click Apply
2.
If you want to reduce latency (delay) there are some different drivers available for your operating system. Please
check the Allen & Heath website www.allen-heath.com for details and links to third party companies able to supply appro-
priate drivers for your operating system.
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
1
OO
M
+6
OO
R
OO
L
OO
+6
+6
+6
2
3
GRP
4
OO
GRP
OO
1
GRP
OO
GRP
+6
+6
+6
OO
M
+6
OO
LEVEL
+6
AFL
OO
LEVEL
+6
AFL
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP
1
GRP
2
GRP
3
GRP
4
INSERT
1
INSERT
2
INSERT
3
INSERT
4
USB
SENDRETURN
AUX OUT
GROUP OUT
MTX
1
MTX
2
MATRIX
OUT
L
R
L
R
2TRK IN
2TRK OUT
INSERT
L
INSERT
R
INSERT
M
L
R
MAIN OUT
M
PHONES
MIN MAX
TB MIC
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
R
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
Talk to LRM
Talk to AUX 1-4
POWER
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
L-R
M
AUX1
AFL
AUX2
AFL
AUX3
AFL
AUX4
AFL
AUX5
AFL
AUX6
AFL
L-R
M
L-R
M
L-R
M
USB
2TRK
PLAYBACK SOURCE
LEVEL
PLAYBACK
LEVEL
TB
LEVEL
PHONES
PFL
USB SEND SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
MATRIX
2
MATRIX
OO +1 0
0
OO +10
0
OO +1 0
0
OO +10
0
OO +10
0
OO +10
0
Allen & Heath 28 ZED-4 BUS User Guide
cakewalk
SONAR LE
DIGITAL AUDIO WORKSTATION
SONAR LE Overview.
SONAR LE is a software application from Cakewalk and is included free of charge with your new ZED mixing console.
SONAR LE is a powerful first step into the world of sequencing and hard disk recording on the Windows platform.
You’ll be able to record from your ZED mixer, create tracks and arrange songs, then play back to your ZED mixer via
the USB port. You can decide whether the SONAR family of products is right for you. If you choose to upgrade your
copy of SONAR LE to a more full-featured version, like SONAR Producer or Home Studio Editions, you’ll now be able
to do so at significant savings.
We will describe the basic steps of installing the software and getting started here, for more comprehensive help or
technical support please use the Help files in SONAR LE or visit the SONAR LE website:
http://www.cakewalk.com/owners/sonarle/
The website will have details on registering your product and upgrading it should you wish. There are also tutorials to
get you started.
SONAR LE is the most complete OEM production software solution available today. Unlike other OEM applications,
SONAR LE has been designed to provide a simple yet complete solution for creating music. You won’t feel the need to
upgrade just to get started.
With support for up to 64 tracks and 24 track effects, 8 physical in/outs at 24bit/192kHz, SONAR LE is able to offer a
powerful pc based recording studio. The package also includes 2 instruments, 6 MIDI effects, and 14 audio effects.
SONAR LE has been updated with new features from its acclaimed SONAR Producer, making SONAR LE the first na-
tive Windows DAW for Windows XP, Windows x64, and Windows Vista.
Today’s Cakewalk SONAR LE is the definitive choice for creating the most complete hardware and software solution.
SONAR LE Key Features.
64 audio tracks
256 MIDI tracks
8 simultaneous inputs and outputs
24-bit/192 kHz audio quality
24 simultaneous effects
8 simultaneous virtual instruments
Integrated VST/VSTi support, without need for VST adapter
Support for ACID™-format loops
Support for ReWire clients such as Project5, Live, or Reason
Elegant user interface—NEW
Active Controller Technology™ automatically maps MIDI keyboards and control surfaces to the parameters
you need most on effects, instruments, volume, pan, and other mix elements—NEW
Easier integration of virtual instruments with Synth Rack—NEW
Support for Windows Vista (32-bit & 64-bit) —NEW , Windows XP Professional x64 Edition—NEW, and
Windows XP operating systems
Allen & Heath 29 ZED-4 BUS User Guide
System Requirements.
SONAR LE Installation.
Put disk into CD or DVD ROM drive and follow instructions on screen!
SONAR LE Audio Configuration with ZED.
To configure your SONAR LE software to communicate audio to and from your ZED mixing console, follow the se-
quence below.
Ensure the ZED mixing console is powered on.
Connect the USB lead from the computer to the USB port on ZED.
First check that your computer has recognised
the connection of the ZED USB device by clicking
Settings/Control Panel/Sounds and Audio Devices.
The device name should be USB Audio CODEC
(ensure there are no other external audio devices
attached to the computer).
Also ensure the Device Volume is set to High.
This can default to the middle during connection
which means very low volume from the USB device, so
it’s worth checking the first few times you connect.
The properties window should look like this:
It is also a good idea to select “No Sounds” in the
Sounds window.
System Require-
ments
Minimum Recommended
Operating System Windows XP Windows XP/Vista/Vista x64
Processor Speed Intel® Pentium® 4 1.3 GHz,
or AMD™ Athlon XP 1500+
or higher
Intel® Pentium® 4 2.8 GHz
[EM64T], or AMD™ Athlon 64
2800+or higher
RAM 256 MB 1 GB or higher
Graphics (resolution,
color depth)
1024 x 768, 16-bit color
1280 x 960, 32-bit color
Hard Disk Space 100 MB for core program 2 GB for program and content
Hard Disk Type
Any
EIDE/Ultra DMA (7200 RPM) or
SATA
MIDI Interface
Windows-compatible
Windows-compatible
Audio Interface
Windows-compatible
WDM- or ASIO-compatible, includ-
ing WaveRT for Vista
Optical Drive
DVD-ROM, DVD+/-R, or DVD+/-RW for installation, CD-R or CD-
RW capability required for CD audio disc burning
Allen & Heath 30 ZED-4 BUS User Guide
Next, fire up SONAR LE.
Click Options/Audio and click on the Drivers tab.
The Input drivers are the audio sources to the
computer, here we have enabled the USB Audio Device
which is the ZED mixing console USB device, and
disabled the audio from the soundcard in the pc.
So the computer is set up to receive audio from
ZED.
The Output Drivers are the audio outputs from the
computer. Here you can see that the pc soundcard
has 4 stereo outputs (all disabled) and the software
has located the USB Audio Device which is ZED.
Tick to enable it.
You will now be able to select your ZED USB left &
right outputs as inputs to SONAR LE and be able to
send audio to your ZED from SONAR outputs.
In order to show how to select inputs to SONAR
tracks, here is a basic Cakewalk project (.cwp).
This is created by clicking File/New/Normal and
then inserting a second audio track by clicking
Insert/Audio Track from the main toolbar.
Click on the I/O tab near the bottom of the window,
then click the expand buttons in the audio track
panes. The tracks 1 & 2 have been re-named ZED
Left and ZED Right by double clicking the name field.
Click the I and the O fields to select inputs and out-
puts for the track. Here we have selected the USB
Left signal to go to Track 1 (ZED Left) and the USB
Right signal to go to track 2 (ZED Right), panned
them accordingly and selected the track outputs to
be the Master Bus.
If audio is present, click the Input Echo buttons (lit
up yellow here) to monitor the signals on the Mas-
ter Bus.
The output for the Master Bus is displayed in the
field marked “O” in the Master Bus pane below the
input tracks. You can see here it says USB Audio
Device, which is the ZED USB input.
SONAR will configure this automatically if there is
only one output device enabled in the Output Driv-
ers Options window (above).
You should now be able to send audio to and from your ZED mixing console using SONAR LE.
To test this, let’s do a recording….
Allen & Heath 31 ZED-4 BUS User Guide
To record the audio on tracks 1 & 2, click the
R buttons so they light up red, then the record
button (circle) on the transport controls on
the top icon toolbar. (Or select larger trans-
port controls from Views).
The audio wave profile will show in the track
panes.
Click stop (Square) when finished.
To listen to the recording, click rewind, then
de-select the input echo buttons (to the right
of the R buttons. Also disarm the tracks by de-
selecting the R buttons.
Click Play (or spacebar) and the recorded au-
dio should play to the USB port on your ZED
mixing console where you can select USB re-
turn to Playback or to the ST3 input.
You can use SONAR LE and your ZED mixer together in many ways, for example straightforward recording of a stereo
mix, recording tracks individually to build up a song, or sending a postfade mix from ZED and inserting an effects plug-in
from SONAR LE, returning the post-effects signal to the mix in ZED.
It is a very versatile combination and we hope you find it a creative and enjoyable product partnership.
Allen & Heath 32 ZED-4 BUS User Guide
USING USB FOR EFFECTS
1
4
5
6
7
8
1
2
3
4
5
6
7
8
9
Use post fade Aux 5 & 6 as the sends from ZED so when you move the channel
fader the effects level stays in proportion.
Select Aux 5-6 on the USB output selector switches.
USB lead carries the digital signals to & from the computer.
Select USB Device Left for Aux 3 or Right for Aux 4 as the input for the track in
the software package.
You can use a send bus in software as you would a hardware mixer.
Assign an effect from your software plug-in list.
If using reverb, it’s a good idea to have 100% wet mix level and reduce the pre-
delay in order to compensate for any latency in USB.
Send the output of the software group or bus to USB Device. In this case, and
probably with most reverbs, it will be stereo so it will go to left & right.
Set the USB return to be sent to ST3. It can then be sent directly to LR or to the
stereo channel by pressing in the under-panel switch below the ST3 Level control.
USB
SENDRETURN
MTX
1-2
AUX
1-2
AUX
5-6
LR
pre-fade
All up =LR post
OO
+6
PLAYBACK
To LR
ALLEN&HEATH
USB
2TRK
PLAYBACK SOURCE
LEVEL
PLAYBACK
PFL
USB SEND SOURCE
ST3 INPUT SOURCE
USB
ST3 IN
+6
+6
AUX5
POST
+6
AUX6
POST
PRE
POST
OO
OO
OO
2
3
9
Allen & Heath 33 ZED-4 BUS User Guide
WIRING NOTES
GROUND
RETURN
SEND
RETURN
OUT
IN
SEND
INSERT
PROCESSOR
LINK RING TO SLEEVE TO UNBALANCE
T
R
S
T
R
S
T
R
S
Insert cable wiring
1=ground
2=hot (+)
3=cold (-)
BALANCED
XLR FEMALE
RCA phono jacks
XLR MALE
2=hot (+)
1=ground
3=cold (-)
RCA PHONO CABLE
Sleeve=ground
Ring=cold (-)
Tip=hot (+)
BALANCED
1=ground
2=hot (+)
3=cold (-)
2=hot (+)
1=ground
3=cold (-)
Sleeve=ground
Ring=cold (-)
Tip=hot (+)
BALANCED
BALANCED
BALANCED
XLR FEMALE
XLR MALE
BALANCED
UNBALANCED
Sleeve=ground
Ring=cold (-)
Tip=hot (+)
BALANCED
Sleeve=ground
Ring=cold (-)
Tip=hot (+)
BALANCED
UNBALANCED
adapter
UNBALANCED
INSTRUMENT CABLE
TRS JACK CABLE
MIC CABLE
TRS to XLR-F CABLE
TRS to XLR-M CABLE
TO
FROM
INPUT OUTPUT
2 Outputs to 1 Input
Y-Adapter
No !
1 Output to 2 Inputs
Y-Adapter
Yes
General
Wiring
Information
Allen & Heath 34 ZED-4 BUS User Guide
PRODUCT SUPPORT
Registering your product
Thank you for buying the Allen & Heath ZED-4 mixer. We hope that you are happy with it and that you enjoy many years of
faithful service with it.
Please go to www.allen-heath.com/register.asp and register your product’s serial number and your details. By registering with
us and becoming an official Registered User, you will ensure that any warranty claim you might make is actioned quickly and
with the minimum delay.
Alternatively, you may either copy or cut off this section of the page, fill in the details, and return it by mail to:
Allen & Heath Ltd, Kernick Industrial Estate, Penryn, Cornwall TR10 9LU, UK
Investigate ALLEN & HEATH’s other ranges at
www.allen-heath.com
Large Live Sound mixers — iLive digital, ML and GL Series
Small Format Live Sound mixers — ZED, MixWizards and PA Series
DJ products — Xone Series
Sound Management Series — iDR Series
3


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