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USER GUIDE
Publication AP7784
Allen & Heath 3 GS_R24 User Guide
This product complies with the European Electromagnetic Compatibility directive 2004/108/EC
and the European Low Voltage Directive 2006/95/EC.
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 2004/108/EC.
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.
NOTE: Any changes or modifications to the console not approved by Allen & Heath could
void the compliance of the console and therefore the users authority to operate it.
GS-R24 User Guide AP7784 Issue 1
Copyright © 2010 Allen & Heath Limited. All rights reserved
Allen & Heath Limited
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Limited One Year Manufacturers 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 the place of purchase.
If this is not possible then please contact the authorised ALLEN & HEATH distributor or agent in your country 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 an authorised ALLEN & HEATH distributor or
agent.
This warranty does not cover fader wear and tear.
The defective unit is to be returned carriage prepaid to the place of purchase, an authorised ALLEN & HEATH dis-
tributor or agent with proof of purchase.
Please discuss this with the distributor or the agent before shipping.
If the unit is to be repaired in a different country to that of its purchase the repair may take longer than normal,
whilst the warranty is confirmed and parts are sourced.
Units returned should be packed to avoid transit damage.
In certain territories the terms may vary. Check with your ALLEN & HEATH distributor or agent for any additional
warranty which may apply.
If further assistance is required please contact Allen & Heath Ltd.
IMPORTANT- PLEASE READ CAREFULLY:
By using this Allen & Heath product and the software within it, you agree to be bound by the terms
of the relevant End User Licence Agreement (EULA), a copy of which can be found on the Allen & Heath
website in the product's pages. You agree to be bound by the terms of the EULA by installing, copying,
or otherwise using the software.
Allen & Heath 4 GS_R24 User Guide
PACKED ITEMS
Check that you have received the following:
Also Packed in the box
Safety Instructions—English
Safety Instructions—French
Addendum note ROHS
Sticker
This User Guide
GS-R24 MIXER
PACKED SEPARATELY ARE THE POWER SUPPLY AND INTERFACE MODULE
O
1
MIDI
2
127
MIDI
O
127
2 TRACK DUB
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
INST
I/P = DAW
POL
+48V
BOOST
60 40-14 6
30
40
50
0
20
GAIN
MIN MAX
Drive
Channel 1
Valve
10
-30
-20
-5
0
5
-10
LEV
LR
PAN
AFL
M
L-R
1-2
BUS
3-4
AUX1
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
INST
I/P = DAW
POL
+48V
BOOST
60 40-14 6
30
40
50
0
20
GAIN
MIN MAX
Drive
Channel 2
Valve
10
-30
-20
-5
0
5
-10
LEV
LR
PAN
AFL
M
L-R
1-2
BUS
3-4
AUX3
+6
0
+6
0
+6
0
AUX2 AUX4
+6
0
AUX5
+6
0
AUX6
+6
0
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
STUDIO
1
5-6
+6
+6
Aux 2
Aux 1
+6
+6
Stereo
4/6
3/5
Aux
Aux
+6
Stereo
1-2
Grp
+6
3-4
Grp
Stereo
+6
+6
L-R
M
10
-30
-20
-5
0
5
-10
LEV
10
-30
-20
-5
0
5
-10
LEV
AFL
STUDIO
2
AFL AFL AFL AFL AFL
PFL MODE
CLEAR
READ
WRITE
AFL MODE
OFF = SEL MODE
OFF = NO FADER MIDI
ADD MODE
5-6
+6
+6
Aux 2
Aux 1
+6
+6
Stereo
4/6
3/5
Aux
Aux
+6
Stereo
1-2
Grp
+6
3-4
Grp
Stereo
+6
+6
L-R
M
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
POWER
R
2 TO 1
1 TO 2
2 TRACK 1
REPLACE L-R
TALK
LEV
MIN MAX
TALK
TO STUDIO
TO AUX 1 & 2
TO AUX 3 & 4
TO GROUPS
MIN MAX
LEVEL
PHONES
2 TRACK 1
2 TRACK 2
DIG MASTER
MAIN MIX L-R
MONO
MONO L-R
ALT SPKRS
MIN MAX
MASTER
DIG
L-R
INPUT
L-R/5.1
MIN MAX
LEVEL
CRM
GTS STOP PLAY RECGTE
17-24=AUX+GRP
PRE INS / POST EQ
MICLINE / DAW
MICLINE / DAW
ACTIVE / BYPASS
5.1 SURRO UND
ALLEN&HEATH
SIP
SOLO
SOLO MODE
INST INST
PHONES
SHIFT
DIM L-R
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
To LR
To CH
10
-30
-20
-5
0
5
-10
ST3
LEV
OO
To LR
To CH
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST2
LEV
10
-30
-20
-5
0
5
-10
OO
ST4
LEV
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
EQ IN
MUTE
I/P=DAW
SEND=
L-R
1-2
3-4
BUS
M
MUTE
DAW
L-R
1-2
3-4
BUS
M
SOLO/
SELECT
SOLO/
SELECT
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
BAL
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
BAL
POST EQ
I/P=DAW
SEND=
DAW
POST EQ
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
SPKRS
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
MUTE
SOLO/
SELECT
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
ROUTING KEY:
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
MIDI FADER MODE
GS-R24M GS-R24
MONO CH
MONO O/P
MIDI ENABLEDMOTOR FADERS
AFL
=
=
=
=
A: DAW SEND
B: INS SOURCE
C: FDR SOURCE
D: FADER
SIP SAFE SIP SAFE
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
Allen & Heath 5 GS_R24 User Guide
CONTENTS
Thank you for purchasing your Allen & Heath GS-R24. 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
This User Guide does not cover the interface modules available for the GS-R24.
The varied modules will have their own User Guide and details of software
drivers, digital connectivity and computer related issues. Also see the website
for details.
Warranty ........................................................... 3
Packed Items ..................................................... 4
Contents ............................................................ 5
Introduction to GS-R24 ....................................... 6
Dimensions & Weights ........................................ 7
Specifications ..................................................... 8
Block Diagram.................................................... 10
Mono Input Channel ........................................... 11
Stereo Input Channel.......................................... 16
Valve Input Channel ........................................... 20
Aux Masters ....................................................... 22
Groups............................................................... 23
Studio Outputs ................................................... 24
Main 2 Track Input & Output connectors.............. 25
Master Section ................................................... 26
Monitoring modes............................................... 27
17-24 = Aux/Grp & 5.1 Surround switches ........... 28
Meterbridge ....................................................... 29
MIDI Control—Modes of Operation ...................... 30
MIDI Controllers................................................. 31
MIDI Implementation ......................................... 32
Power Up Configuration Modes............................ 35
Connection Diagram (Basic) ................................ 36
Mono Input Channel Workflow Options ................ 37
Internally set Option Jumper Links....................... 40
Wiring diagrams for audio leads……..................... 41
Product Support ................................................. 42
Allen & Heath 6 GS_R24 User Guide
INTRODUCTION TO THE GS-R24
A Technical Overview:
The Allen & Heath GS-R24 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.
Allen & Heath has a long history of making classic recording mixers such as the Sigma, Syncon, System 8, Saber and the
GS3000, but for a few years have concentrated on the live sound, installation and pro DJ markets. The GS-R24 resurrects the
GS product line and stands as a classic recording console for the modern age of Digital Audio Workstation software.
We spent a long time examining how modern recording methods, equipment and software applications have changed the way
musicians and sound engineers work and listening to ideas and requests on forums such as Gearslutz, we have created a prod-
uct which offers more than a sum of its parts—a combination of not just different technology, but different methods and phi-
losophies.
GS-R24 is designed to fulfil the needs of musicians, sound engineers and producers and is adaptable to different workflow
methods. Briefly, some of the capabilities of the GS-R24 include:
Multi-track recording to the digital domain with easy interfacing to a computer DAW with zero latency monitoring of
live sources.
Multi-track recording to the digital domain with monitoring sourced from the recorded track in the DAW.
Over-dubbing a recorded track whilst monitoring the track and/or live source.
Multi-track mixdown using state-of-the-art analogue summing techniques.
Multi-track mixing performed in the DAW using the GS-R24 as a controller.
Patching, routing and monitoring a comprehensive matrix of signals in a studio environment—artists monitors, effects
processors, external devices and studio control room monitors.
Surround sound mixes can be created in a DAW and conveniently monitored through a single level control.
Automating a mix using the motorised faders on GSR-24M to either create an automated mix in the digital domain or
create an automated analogue summing mix using the faders for channel level control as well as parameter control.
Our claim that the GS-R24 is a modern classic recording console is not without foundation. It is a progression of our in-line
recording mixers, many regarded as “classics” but with interfacing to each channel provided by a Digital Audio Workstation.
Actually, the GS-R24 isn’t just designed for modern times—it is built with the future in mind, with the interfacing hardware
housed in a removable module which can be swapped and updated over time. This means that you won’t have to change your
lovely console when you need to upgrade your digital interfacing technology years from now.
The GS-R24 is built utilising individual vertically 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 ser-
vicing easier should it be required. The motor fader system can be removed separately to the rest of the system and faders
can be changed individually if the are damaged (from top impact for example).
Mic/Line Pre-amps:
The ultimate performing pre-amps are fitted to GS-R24. Similar in topology to those used in the renowned ZED-R16, they
comprise a symmetrical circuit with individual linearising feedback to both phases, along with the lowest noise transistors avail-
able, providing very low distortion over a wide bandwidth and extremely low noise which translates to superior clarity and
dynamic range.
EQ:
Extremely powerful, flexible and fully implemented mono channel EQ. Parametric mid sections with extended frequency range
and controllable Q- factor allow a huge range of corrective and creative possibilities.
MIDI Control:
We have developed the control aspect on GS-R24 to give an intuitive, flexible, easy way to control multiple parameters in a
variety of DAWs. Each of the mono channel faders has MIDI capability and are motorised on GS-R24M. In addition there is a
MIDI Select switch on each channel and in the MIDI controller section 2 x 60mm faders, 12 x rotaries, 14 switches plus trans-
port controls and a jogwheel.
Interface Modules:
The interface module fits in the rear panel of the console. It handles 32 channels in and 32 channels out plus the control proto-
col. This manual does not cover the details of the modules as the variety of modules available will change in the future. Please
consult the A&H website for details and the User Guide for the individual modules.
Allen & Heath 7 GS_R24 User Guide
DIMENSIONS & WEIGHTS
9
7
.
0
0
°
616mm (24.25”)
192mm (7.5”)
1125mm (44.3”)
613mm (24.1”)
Weight kg (lb)
Unpacked Packed
GS-R24M 38 (84) 40 (88)
GS-R24 30 (66) 38 (84)
Allen & Heath 8 GS_R24 User Guide
Operating Levels
Inputs
Mono channel (XLR) Input -6 to –60dBu for nominal (+14dBu in max)
Mono channel Line Input (Jack socket) +14 to –40dBu (+34dBu 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 +15dB)
Valve channel (XLR) -10 to –60dBu for nominal (+10dBu max)
Valve channel (Line) +10 to –40dBu for nominal (+30dBu maximum)
Valve channel (Inst gain boosted) -16 to –66dBu for nominal (122mV to 0.388mV rms)
2 Track Input (phono or TRS jack sockets) 0dBu nominal +21dBu maximum
Outputs
Main (2 Track 1) L-R (XLR) & Groups 1-4 (TRS Jack) +4dBu nominal. +27dBu maximum.
L-R Insert & Group Inserts (TRS Jack socket) 0dBu nominal +21dBu maximum
2 Track 2 Outputs (Jack sockets) 0dBu nominal. +21dBu maximum.
All other analogue outputs 0 nominal +21dBu maximum
Headroom
Analogue headroom from nominal (0Vu) 21dB
Analogue headroom at Mix summing amplifier 23dB
Frequency Response
Mic in to Mix L/R Out, 10dB gain +/-1dB 10Hz to 130kHz.
Line in to Mix L/R out 0dB gain +/-0.5dB 20Hz to 20kHz
Stereo in to Mix L/R out +/-0.5dB 20Hz to 40kHz
Mic in to Mix L/R Out, 30dB gain +/-0.5dB 20Hz to 80kHz.
Mic in to Mix L/R Out, 50dB gain +/-1dB 20Hz to 80kHz.
THD+n
Mic in to Mix L/R Out, 10dB gain 1kHz +10dBu out (DC to 22kHz) 0.0015%
Mic in to Mix L/R Out, 30dB gain 1kHz (DC to 22kHz) 0.0025%
Line in to Mix L/R out 0dB gain +10dBu 1kHz (DC to 22kHz) 0.002%
Stereo in to Mix L/R out 0dB gain +10dBu 1kHz (DC to 22kHz) 0.002%
Mic in to Mix L/R Out, 50dB gain 1kHz (DC to 22kHz) 0.0035%
Mic in to Mix L/R Out, 30dB gain 10kHz (DC to 30kHz) 0.0025%
GS-R24 SPECIFICATIONS
Allen & Heath 9 GS_R24 User Guide
Noise
Mono ch Mic Pre EIN @ 60dB gain 150R input Z 22-22kHz -128.5dBu
Mix Noise, Aux 1-4 out, sends minimum, masters at unity 22-22kHz -84dBu
Mix Noise, Groups 1-4, 24 channels routed, Ref +4dBu, 22-22kHz -89dB (-85dBu)
Mix Noise, LR out, 0 channels routed, Ref +4dBu, 22-22kHz -97dB (-93dBu)
Mix Noise, LR out, 12 channels routed, Ref +4dBu, 22-22kHz -90dB (-86dBu)
Mono ch Mic Pre EIN @ 30dB gain 150R input Z 22-22kHz -124dBu
Mix Noise, LR out, 24 channels routed, Ref +4dBu, 22-22kHz -89dB (-85dBu)
Power consumption Motorised Fader model 170W Nominal 300W Max
Power consumption non-Motorised Fader model 170W
Weight GS-R24 unpacked/packed 30/38kg
Weight GS-R24m unpacked/packed 32/40kg
GS-R24 SPECIFICATIONS
Allen & Heath 10 GS_R24 User Guide
BLOCK DIAGRAM
+
-
GAIN
HM
HF
4 BAND PARAMETRIC EQUALISER
MONO CHANNEL
100Hz
MIC IN
FADER
AUX 1
AUX 2
LF
LINE IN
+48V
INSERT
MUTE
PAN
HPF
PHANTOM POWER SWITCH
LM
EQ
IN
L-R
AUX 3
AUX 4
TALKBACK
MIC
TALKBACK
GAIN
DACADC
RECORDING
ggfqgfqg
MIDI DATA
SOFT MUTE
DIGITAL RETURN
PRE-INSERT
DIGITAL RETURN
POST-EQ
DIGITAL SEND
POST-EQ
BYPASS
L INSERT
R INSERT
MAIN LR
TIP SEND
TIP SEND
+10dB
LEFT
RIGHT
MAIN (2TRK 1) OUT
+4dBu NOMINAL
BALANCED
LEFT
RIGHT
2TRK 2 OUT
R
L
+
-
+
-
DUBBING
-2dBu NOMINAL
DACADC
DIGITAL MASTER
2 TRACK 1
2 TRK 1 IN
2 TRK 2 IN
R
L
AFL
DIGITAL MASTER IN
DIGITAL MASTER IN
2 TRACK 2 IN
2 TRACK 1 IN
+
MONO
LR
CONTROL ROOM MONITORS
PHONES
LEVEL
AUX 1
+6dB
AUX1 OUT
TALK
STUDIO AUX 1 - 2
AUX 1
AUX 2
AUX 3
AUX 4
PFL
AFL L
MAIN MIX R
MAIN MIX L
LEFT
RIGHT
ALTERNATE SPEAKERS
LEFT
RIGHT
ALT
COPY FOR 2-6
Line Invert
AUX 5
AUX 6
AUX 5
AUX 6
CHANNEL METER
TO MIDI CPU
SOLO LOGIC
A
B
C
D
SOLO/SELECT
MONO
GROUP 1
MONO MIX
GROUP 3
GROUP 2
GROUP 4
1-2
3-4
AFL R
PFL
AFL L
AFL R
FADER
LOGIC CONTROL
SELECT
PREFADE
PRE
POST FADER
PRE FADER
INTERFACE
SELECT
AUX 5-6 PRE/POST
MIDI SELECT
R
L
ST1 & 2 RCA
ST1 & 2 JACK
R
L
GAIN
GAIN
+
+
LF
gg
HMF
gg
DACADC
RECORDING
INTERFACE
EQ
IN
DIGITAL SEND
POST-EQ
A
FADER
AUX 1
AUX 2
MUTE
BAL
L-R
AUX 3
AUX 4
SOFT MUTE
AUX 5
AUX 6
SOLO LOGIC
SOLO/SELECT
MONO
1-2
3-4
PFL
AFL L
AFL R
LOGIC CONTROL
PRE
POST FADER MONO
POST FADER MONO
PRE FADER MONO
SELECT
AUX 5-6 PRE/POST
MIDI SELECT
LMF HF
+
+
+
PRE FADER MONO
4 BAND EQUALISER
CHANNEL
METER
+
+
-
GAIN
MIC IN
Hi Z
+48V
PHANTOM POWER SWITCH
Line Invert
INSTRUMENT
/LINE LEVEL
CLASS A
FET
HI-Z DI
GAIN BOOST
DACADC
RECORDING
INTERFACE
VALVE
STAGE
SOLID
STATE
STAGE
BLEND
DRIVE
SOURCE = DAW
INSERT
LEVEL
PAN
L-R
MONO
1-2
3-4
AFL L
AFL R
METER LED
DIRECT OUT
STEREO CHANNEL
VALVE CHANNEL
METER BAR
SOURCE = DAW
AUX 3 - 4 GROUPS
TALK TO STUDIO
LEVEL
MONO INSERT
TIP SEND
MONO
+10dB
MONO OUT
GROUP INSERT
TIP SEND
GROUP 1
+10dB
GROUP 1 OUT
MUTE
AFL
L-R
MONO
GROUP METER
AFL
COPY FOR 2-6
AUX 1 AUX 2
AUX 3
AUX 5
AUX 4
AUX 6
GRP 1-2 GRP 3-4
GRP 2
STEREO STEREO
L-R
STEREO
L-R POSTFADE
L-R POSTFADE M POSTFADE
M
TALK TO
STUDIO
LEVEL
AFL
STUDIO OUT L
STUDIO OUT R
PFL
SURROUND ONLY
CENTRE
SUB BASS
MONO POSTFADE
L-R POSTFADE
DIM
-20dB
-20dB
MONITORS LEVEL
INTERFACE I/P CH 25-30
SURROUND
RECORDING
INTERFACE
DUB 2-1
DUB 1-2
STUDIO OUT
REPLACE L-R
SOLO MODE
PFL
AFL
ADD
SOLO-IN-PLACE
LOGIC CONTROL FOR
SOLO MODES & MIDI
17-24 = AUX-GROUP
CONTROL
DIRECT OUT
POST-EQ
PRE-MUTE
FADER OUTPUT
POSTFADER
POST-EQ
PRE-MUTE
FADER OUTPUT
POSTFADER
CHANNEL 17
AUX 1
CHANNEL 18
AUX 2
CHANNEL 19
AUX 3
CHANNEL 20
AUX 4
CHANNEL 21
GROUP 1
CHANNEL 22
GROUP 2
CHANNEL 23
GROUP 3
CHANNEL 24
GROUP 4
CHANNEL 1
CHANNEL 8
CHANNEL 9
CHANNEL 16
STEREO 1 L
STEREO 1 R
STEREO 2 L
STEREO 2 R
VALVE 1
VALVE 2
MASTER L
MASTER R
RECORDING
INTERFACE
MIDI
INTERFACE
CHANNEL 1
CHANNEL 8
CHANNEL 9
CHANNEL 16
CHANNEL 17
CHANNEL 24
STEREO 1 L
STEREO 1 R
STEREO 2 L
STEREO 2 R
VALVE 1
VALVE 2
MASTER L
MASTER R
MIDI CONTROLLER PROCESSOR
MIDI FADERS + ROTARIES + SWITCHES
MIX L
MIX R
UNBALANCED
VU VU
MAIN MIX L-R VU METERS
Allen & Heath 11 GS_R24 User Guide
MONO INPUT CHANNEL
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.
Insert Jack Socket
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis. Nomi-
nal level is 0dBu. The insert point is after the 100Hz filter and before
the EQ.
Gain Control
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from +6dB to +60dB for signals
plugged in to the xlr socket (Mic Input) and –14dB to +40dB for
signals plugged into the Line input jack.
100Hz Hi-pass Filter
The Hi-pass filter is used for reducing pop noise and
rumble from microphone signals. It is a 2-pole (12dB
per octave) filter with a corner frequency set at just
below 100Hz.
The filter affects signals from both Mic XLR and Line
jack socket.
Line Input Switch
Selects the source for the pre-amp from XLR to Line input jack. The
balanced input signal is padded by 20dB but noise and distortion are
kept to a minimum in order to make it transparent when connecting
external devices.
Microphone Input Socket
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
REAR PANEL CONNECTIONS
Direct Output Jack Socket
Standard 1/4” (6.25mm) Jack socket for Channel output signal.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is
0dBu. The source for the Direct Output is selectable by option
jumpers internally, factory set to Pre-Fade.
48V Phantom Power Switch
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
FRONT PANEL CONTROLS
Polarity (phase) reverse switch
Reverses the polarity of the balanced input signal phases for both
mic XLR and Line jack inputs.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-40.00
-35.00
-30.00
-25.00
-20.00
-15.00
-10.00
-5.00
0.00
dBr
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
+48V
LINE
POL
DIRECT
OUT
INSERT
LINE
MIC
C
T
R
T
M1
Allen & Heath 12 GS_R24 User Guide
MONO INPUT CHANNEL
HMF EQ
The HMF (High Mid Frequency) equaliser affects the upper middle of the
audible frequency range. The frequency graduations on the sweep con-
trol are the centre frequencies of the EQ. The Q factor is the width of
the equaliser curve and is variable from a wide 0.8 to a sharp 6.
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.
10.00 Hz 100.00 1000.00 10000.00
0.00010
0.00100
0.01000
0.10000
1.00000
%
Pre-Amp performance notes
The GS-R24 pre-amp is a highly developed and proven design. Originally evolved
from a balanced summing amplifier circuit originally designed back in the late
1980s for the Focusrite Forte console whilst working for industry legend Rupert
Neve. Very low noise transistors are employed in a symmetrical topology with
local phase compensation resulting in an inherently stable but wide bandwidth,
low distortion, very low noise design.
THD+n plots of pre-amp
at 10, 20, 30 and 40dB
gain showing uniformity
of distortion performance
over a wide range of gain
settings.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-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 40000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
60 40-14 6
30
40
50
0
20
GAIN
HPF
100Hz
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
+48V
LINE
POL
-15 +15
-15 +15
-15 +15
Allen & Heath 13 GS_R24 User Guide
MONO INPUT CHANNEL
LMF EQ
The LMF (Low Mid Frequency) equaliser affects the lower middle of the
audible frequency range. The frequency graduations on the sweep con-
trol are the centre frequencies of the EQ. As with the HMF section, the
Q factor is variable from 0.8 to 6. The graph shows the Q setting in the
minimum, and maximum positions, and the extents of the frequency
range.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
LF EQ
The LF (Low Frequency) equaliser affects the frequency response of the
lower audible (bass) frequencies. The corner frequency of 60Hz is
around 3dB from the maximum cut or boost of the circuit.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-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 by-
passed when the switch is in its up position.
HM
0.8
6
2k
700
400Hz
1k
6k
18k
4k
Q
F
G
LM
0.8
6
120
30
18Hz
60
600
1k
300
Q
F
G
-15
LF
+15
80Hz
HF
12k
EQ IN
1
1
-15 +15
-15 +15
-15 +15
Allen & Heath 14 GS_R24 User Guide
MONO INPUT CHANNEL
Auxiliary sends 1 & 2
Each of these controls sends a signal to an Aux 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.
These sends are affected by the Mute switch by default, so muting the channel
will also mute the Aux sends but they can be selected to be independent of
the mute status.
The control varies the signal level to the bus from off (fully attenuated) to
+6dB, with unity gain at the arrow.
There are master level controls for all of the Auxiliary outputs situated in the
master section of the mixer.
Auxes 5 & 6
The source for Aux sends 5 & 6 is post-fader by default. They are also muted
by the Mute switch. Auxes 5 & 6 are primarily used for effects sends. How-
ever, an internal jumper option can be altered to select them to be sourced
pre-fader, for example if more monitor sends are required.
Auxes 3 & 4
The source for Aux sends 3 & 4 is normally post-fader but can be selected
pre-fader by pressing the Pre switch.
PAN
The pan control adjusts how the signal from the mono input channel is shared
between the left and right buses and between odd and even group buses.
Bus Routing Switches
The L-R switch connects the post-fade signal to the main L-R mix bus
via the pan control. 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.
The M switch routes the post-fade signal to a mono mix bus which is
independent of the pan control.
The 1-2 and 3-4 switches are for routing the post-pan signal to pairs of
audio sub-groups which have independent insert points, master faders,
outputs and sub routing to the main mix buses if required.
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
PAN
DAW
A
B
C
D
L-R
1-2
3-4
BUS
M
Allen & Heath 15 GS_R24 User Guide
MONO INPUT CHANNEL
For a graphical explanation of the interface
configuration switches, and interface routing
options please refer to page 39.
DAW send source switch
Switch A determines the source for the interface send for each channel. In
the up position the source is just after the pre-amp and Hi pass filter. If
pressed in, then the source is from after the EQ IN switch. One or the other
signal will always be sent to the interface.
INTERFACE CONFIGURATION SWITCHES
A
DAW return to channel (Pre Insert) switch
Switch B selects the source for the channel to be the interface return, which
is switched in at just before the channel insert point. In other words the pre-
amp signal is replaced by the interface return for that channel just before the
insert point.
B
DAW return to channel (Post EQ) switch
Switch C selects the source for the channel at a point after the EQ. So if
pressed, the channel signal from the EQ is replaced with the interface return
for that channel which then feeds the fader and also the pre-fade sends.
C
D
Fader Bypass switch
Switch D allows the channel level control element of the fader to be by-
passed at unity gain. This is useful when using the fader purely as a MIDI con-
trol device when also utilising the channel audio path for mixing or monitor-
ing but not wanting fader movements to affect the channel signal level.
Mute Switch
This mutes or cuts the signal to the mix buses, the post-fade Auxes and the
pre-fade Auxes (where muting is enabled). A rectangular LED illuminates to
show the Mute switch is pressed. The “soft” mute circuit has a time constant
of 30mS for minimum Fourier clicks caused by sharp edges, and can be trig-
gered by soloing another channel in Solo in Place mode.
Solo/Select Switch
The channel solo/select switch is multi-functional switch that operates as a
channel solo switch or a MIDI select switch to control DAW parameters,
The modes are set by selector switches in the master section and are as fol-
lows:
1) PFL: Sends a pre-fade (also pre-mute) signal from the channel to the
monitoring system.
2) AFL: Sends an after-fade (also post pan) signal to the monitoring sys-
tem.
3) Solo in Place: Any pressed solo switches will mute other mono input
or stereo input channels (unless SiP safed) unless their solo switches
are pressed also (in ADD mode).
4) Select: The channel monitoring is disabled and the switch sends a MIDI
message. The LED illumination can be tallied internally or can be tal-
lied by the DAW in order to maintain synchronisation of status.
Fader
A 100mm fader controls the level of the channel signal path to mix buses and
post-fade auxes. The mono channel faders can also be used as MIDI control-
lers for parameters in DAW software. On the GS-R24M the faders are mo-
torised, further information on page 32.
MUTE
SOLO/
SELECT
DAW
A
B
C
D
10
0
10
20
30
40
Allen & Heath 16 GS_R24 User Guide
STEREO INPUT CHANNEL
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS
ST1 (& ST3) Phono sockets
Standard RCA phono sockets for unbalanced stereo inputs.
Nominal level = 0dBu
ST1 Level
The input level control varies the level of the signal from off (fully attenuated)
to +10dB of gain at the maximum position.
ST2 (& ST4) Jack sockets
Standard 1/4” (6.25mm) Jack socket for balanced or unbalanced line level
signals. Wired Tip=Hot(+), Ring=cold (-), Sleeve=Chassis.
The left channel input is connected to the break contacts of the right channel
input socket so a mono source can feed both left & right channels if required.
Nominal level = 0dBu
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
To LR
To CH
10
-30
-20
-5
0
5
-10
OO
ST2
LEV
SIP SAFE
ST1 input routing switch
ST1 (& ST3) can be routed directly to the main L-R mix bus (switch up) or to
the corresponding stereo channel section where the signals will sum with the
ST2 (& ST3) inputs from the jack sockets.
ST Channel SiP Safe switch
The Solo in Place Safe switch isolates the stereo channel from the muting
function of the Solo in Place system. Designed so that if effects are returned
to one or both stereo channels, they can be safe from muting by the SiP sys-
tem thereby allowing any soloed channels to be heard with effects intact.
ST2 Level
The input level control varies the level of the signal from off (fully attenuated)
to +10dB of gain at the maximum position.
ST1 IN
R
L
ST2
L/M
R
IN
Allen & Heath 17 GS_R24 User Guide
STEREO INPUT CHANNEL
Stereo HF EQ
With a 3dB corner frequency of 12kHz and maximum cut & boost of 15dB,
the HF EQ is tuned to the upper range of the audio spectrum.
EQ IN
10
-30
-20
-5
0
5
-10
OO
ST2
LEV
-15 +15
HF
12k
-15
HM
+15
2k5
-15
LM
+15
250Hz
-15
LF
+15
80Hz
SIP SAFE
10.00 Hz 100.00 1000.00 10000.00 40000.00
-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 40000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
Stereo HM & LM EQ
Fixed bandpass equaliser sections set at 2.5kHz and 250Hz and with a maxi-
mum cut & boost of 15dB.
Stereo LF EQ
A shelving equaliser with a 3dB corner frequency of 60Hz and with a maxi-
mum cut & boost of 15dB.
10.00 Hz 100.00 1000.00 10000.00 40000.00
-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.
Allen & Heath 18 GS_R24 User Guide
STEREO INPUT CHANNEL
EQ IN
I/P=DAW
SEND=
L-R
1-2
3-4
BUS
M
DAW
1
+6
AUX
2
+6
AUX
3
+6
AUX
4
+6
AUX
5
+6
AUX
6
+6
AUX
Pre
LR
BAL
POST EQ
Auxiliary sends 1 & 2
Each of these controls sends a signal to an Aux bus. The signal is sourced pre-
fade which means that the level is independent of, and unaffected by the fader.
Auxes 1 & 2 are mono buses so the stereo pre-fade signals are summed to-
gether to provide the source for the send.
These sends are not affected by the Mute switch by default, so muting the
channel does not mute the Aux sends but they can be selected to be post-
mute where they will follow the mute status (internal jumper links).
The control varies the signal level to the bus from off (fully attenuated) to
+6dB, with unity gain at the arrow.
There are master level controls for all of the Auxiliary outputs situated in the
master section of the mixer.
Auxes 5 & 6
The source for Aux sends 5 & 6 is post-fader by default. They are muted by
the Mute status. Auxes 5 & 6 are primarily used for effects sends. However,
an internal jumper option can be altered to select them to be sourced pre-
fader, for example if more monitor sends are required.
Auxes 3 & 4
The source for Aux sends 3 & 4 is normally post-fader but can be selected
pre-fader by pressing the Pre switch.
Balance
The balance control adjusts how the stereo left and right channels are bal-
anced when routed to the stereo L-R mix bus or the pairs of group buses.
Unity gain is in the middle, the opposite signal is attenuated when set left or
right.
Bus Routing Switches
The L-R switch connects the post-fade left & right signals to the main
L-R mix bus via the balance control. 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.
The M switch routes the post-fade mono sum of left & right to a mono
mix bus which is independent of the balance control.
The 1-2 and 3-4 switches are for routing the post-balance signal to
pairs of audio sub-groups which have independent insert points, mas-
ter faders, outputs and sub routing to the main mix buses if required.
Allen & Heath 19 GS_R24 User Guide
STEREO INPUT CHANNEL
MUTE
I/P=DAW
SEND=
DAW
SOLO/
SELECT
POST EQ
10
0
10
20
30
40
DAW send source switch
This switch determines the source for the interface send for the stereo chan-
nel. In the up position the source is taken from the post-level input signals. If
the switch is pressed then the source is taken from after the stereo EQ. One
or the other signal will always be sent to the interface.
INTERFACE CONFIGURATION SWITCHES
Stereo input channel source = DAW
The I/P=DAW switch swaps the source for the stereo channel from the Jack
socket/RCA phono connectors to the interface returns for that channel.
Mute Switch
This mutes or cuts the signal to the mix buses, the post-fade Auxes and the
pre-fade Auxes (where muting is enabled). A rectangular LED illuminates to
show the Mute switch is pressed. The “soft” mute circuit has a time constant
of 30mS for minimum Fourier clicks caused by sharp edges, and can be trig-
gered by soloing another channel in Solo in Place mode.
Solo/Select Switch
The channel solo/select switch is multi-functional switch that operates as a
channel solo switch or a MIDI select switch to control DAW parameters,
The modes are set by selector switches in the master section and are as fol-
lows:
1) PFL: Sends a pre-fade (also pre-mute) mono sum of left & right signals
from the stereo channel to the monitoring system.
2) AFL: Sends an after-fade (also post Bal) stereo signal to the monitoring
system.
3) Solo in Place: Any pressed solo switches will mute other mono input
or stereo input channels (unless SiP safed) unless their solo switches
are pressed also (in ADD mode).
4) Select: The channel monitoring is disabled and the switch sends a MIDI
message. The LED illumination can be tallied internally or can be tal-
lied by the DAW in order to maintain synchronisation of status.
Fader
A 100mm stereo fader controls the level of the left & right channel signals to
mix buses and post-fade auxes. The stereo channel faders are not MIDI en-
abled and cannot be motorised or automated.
Allen & Heath 20 GS_R24 User Guide
I/P=DAW switch
This swaps the source for the valve stage from the Mic/Line/Inst
sockets to the interface return for that channel (channels 29 & 30 on
the interface). The pre-amp Gain control will not affect the return
level when sourced from the interface, but the Drive control will.
VALVE INPUT CHANNEL
INST
I/P = DAW
POL
+48V
BOOST
60 40-14 6
30
40
50
0
20
GAIN
MIN MAX
Drive
INST
Line/Instrument Input Jack Socket
Standard 1/4” (6.25mm) Jack socket. This is an unbalanced input de-
signed so that it can be used for instruments with either line level
(active) outputs or low level magnetic or piezo pickups.
Wired Tip=Hot(+), Ring=cold (0V), Sleeve=Chassis.
Insert Jack Socket
Standard 1/4” (6.25mm) Jack socket for unbalanced insert send and
return signals. Wired Tip=send, Ring=return, Sleeve=Chassis. Nomi-
nal level is 0dBu. The insert point is after the valve pre-amp stage.
Microphone Input Socket
Standard 3-Pin XLR socket wired as Pin 1=Chassis, Pin 2=hot (+),
Pin 3=Cold (-).
Direct Output Jack Socket
Standard 1/4” (6.25mm) Jack socket for Valve channel output signal.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is
0dBu. The source for the Direct Output is taken from pre the mas-
ter level control and is impedance balanced which means that the
source resistance to the Tip(+) and Ring(0v) contacts are matched in
order to maintain common-mode interference rejection.
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS
48V Phantom Power Switch
Applies +48V to pins 2 and 3 of the XLR input though 6k8 resistors
for phantom powered condenser microphones.
Polarity (phase) reverse switch
Reverses the polarity of the balanced input signal phases for both
mic XLR and Line jack inputs.
Line/Instrument Input Switch
Selects the source for the pre-amp from XLR to Line/Instrument
input jack. The jack input is extremely high impedance (10M) and
utilises a class A FET circuit as a front end to the pre-amp. This in
itself emulates a thermionic valve input stage in its tonal quality and
saturation characteristics.
Boost Instrument level switch
Increases the gain of the FET pre-amp by 26dB when pressed. Useful
for low output pickups of when the saturation characteristics of the
pre-amp circuit are utilised.
Important! This switch is liable to cause clicks or
thumps when pressed—turn down your master
level to avoid unwanted clicks.
T
T
INSERT
DIRECT
OUT
MIC
INST
IN
LINE/
Allen & Heath 21 GS_R24 User Guide
Gain Control
This adjusts the gain of the input amplifier to match the signal level
of the input. The gain is varied from +6dB to +60dB for signals
plugged in to the xlr socket (Mic Input) and –14dB to +40dB for
signals plugged into the Line/Inst input jack (without Boost being
pressed).
The Gain control does not affect the signal if the input is sourced
from the DAW interface.
Drive control
The Drive control determines the amount of signal that passes
through the valve stage and therefore the amount of signal with
thermionic valve pre-amp characteristic. In addition to increasing the
amount of even harmonic content, the volume level may also be in-
creased when swept towards the MAX setting.
A 3 colour LED indicator illuminates green, orange then red to show
the signal level after the valve stage.
VALVE INPUT CHANNEL
60 40-14 6
30
40
50
0
20
GAIN
MIN MAX
Drive
Channel 1
Valve
10
-30
-20
-5
0
5
-10
LEV
LR
PAN
AFL
M
L-R
1-2
BUS
3-4
0.00 ms 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 1.99
-8.70
-6.53
-4.35
-2.18
0.00
2.18
4.35
6.53
8.70
V
0.00 ms 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 1.99
-8.70
-6.53
-4.35
-2.18
0.00
2.18
4.35
6.53
8.70
V
Drive control characteristics at around +10dBu. Two graphs show MIN then MAX
0.00 ms 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 1.99
-17.40
-13.05
-8.70
-4.35
0.00
4.35
8.70
13.05
17.40
V
The third graph shows extreme
overload characteristics of the
combined instrument input and
valve stage with maximum drive.
Note the asymmetric soft clipping
on each half-cycle.
Level control
Effectively the fader for the valve channel (or master volume). Ad-
justs the level from fully attenuated to +10dB of gain.
PAN
The pan control adjusts how the signal from the mono input channel
is shared between the left and right buses and between odd and
even group buses.
Bus Routing Switches
The routing switches connect the channel signal to the mix
buses in a similar way to the mono input channel.
After Fade Listen switch
Connects the post level control signal in mono to the AFL
monitoring system.
A full description of the console monitoring system is given on
page 29.
Allen & Heath 22 GS_R24 User Guide
AUXILIARY MASTER OUTPUTS & CONTROLS
AUX1
AFL
AUX3
+6
0
+6
0
+6
0
AUX2 AUX4
+6
0
AUX5
+6
0
AUX6
+6
0
AFLAFLAFLAFLAFL
Aux master level control
Each of the 6 auxiliary buses has a master level control to adjust the overall level of the aux summed mix to the output. The
range is from fully attenuated to +6dB gain.
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS
Aux bus Output Jack Socket
Standard 1/4” (6.25mm) Jack sockets for Aux bus output signals. Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal
level is 0dBu.
Aux master AFL
An After Fade Listen switch is provided to switch the post level control aux signal to the AFL monitoring system.
A full description of the monitoring system is given on page 29.
2TRK2 IN
2TRK2 0UT
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
Allen & Heath 23 GS_R24 User Guide
GROUP BUS OUTPUTS & MASTER CONTROLS.
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
L-R
PAN
L R
=
M
PK!
+6
0
SIG
1
MUTE
AFL
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
10
0
10
20
30
40
REAR PANEL CONNECTIONS
FRONT PANEL CONTROLS
Group bus Output Jack Socket
Standard 1/4” (6.25mm) Jack sockets for Aux bus output sig-
nals. Wired Tip=Hot(+), Ring=Cold(-), Sleeve=Chassis. Nomi-
nal level is +4dBu. Electronically balanced.
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 –2dBu.
Group bus sub routing to L-R switch
Routes the post fade group signal to the main L-R mix bus via
the pan control.
Group bus sub routing to M switch
Routes the post fade group signal to the main mono mix bus.
Group pan control
Adjusts the amount of level that is shared between the left &
right mix buses.
Group meter
Shows the level of the audio signal post-fade.
Group mute
A direct switched mute for the group output and sub routing.
Group AFL
An After Fade Listen switch to select the post fade (pre-mute)
group signal to the AFL monitoring system.
A full description of the monitoring system is given on page
29.
Group Fader
A 100mm fader positioned after the insert point in the signal
path, controls the overall level of the group signal to the out-
put, sub routing, and monitor signal. The fader has 10dB gain
at the top of its travel.
GRP 1
INSERT
OUT
GRP
2
INSERT
OUT
GRP
3
INSERT
OUT
GRP
4
INSERT
OUT
Serial No.
Allen & Heath 24 GS_R24 User Guide
STUDIO OUTPUTS (ARTISTS FEEDS)
STUDIO
1
5-6
+6
+6
Aux 2
Aux 1
+6
+6
Stereo
4/6
3/5
Aux
Aux
+6
Stereo
1-2
Grp
+6
3-4
Grp
Stereo
+6
+6
L-R
M
10
-30
-20
-5
0
5
-10
LEV
10
-30
-20
-5
0
5
-10
LEV
AFL
STUDIO
2
5-6
+6
+6
Aux 2
Aux 1
+6
+6
Stereo
4/6
3/5
Aux
Aux
+6
Stereo
1-2
Grp
+6
3-4
Grp
Stereo
+6
+6
L-R
M
AFL
REAR PANEL CONNECTIONS
Studio feed Output Jack Socket
Standard 1/4” (6.25mm) Jack sockets for Studio artists feed output signals.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is
0dBu. Each Studio Output pair can be used as a stereo feed or two mono
outputs.
FRONT PANEL CONTROLS
Studio feed submix Aux 1 level control
Sends signal from the Aux 1 mix master (post Aux 1 master level) to the
Studio L & R outputs. The control adjusts the level from fully attenuated
to +6dB gain.
Studio feed submix Aux 2 level control
Sends signal from the Aux 2 mix master (post Aux 2 master level) to the
Studio L & R outputs.
Studio feed submix Aux 3/5 level control & 5-6 switch
Sends signal from the Aux 3 mix master (post Aux 3 master level) to the
Studio L & R outputs. If the 5-6 switch is pressed then this becomes a
send from Aux 5.
Studio feed submix Aux 4/6 level control & 5-6 switch
Sends signal from the Aux 4 mix master (post Aux 4 master level) to the
Studio L & R outputs. If the 5-6 switch is pressed then this becomes a
send from Aux 6.
Studio feed Grp 1-2 level control & Stereo switch
Sends signals from the Group 1 & 2 mix (post group faders) to the Studio
L & R outputs. Normally both groups 1 & 2 are sent to both L & R studio
outputs, but if the Stereo switch is pressed group 1 feeds the left output
only and group 2 feeds only the right.
Studio feed Grp 3-4 level control & Stereo switch
Sends signals from the Group 3 & 4 mix (post group faders) to the Studio
L & R outputs. Normally both groups 3 & 4 are sent to both L & R studio
outputs, but if the Stereo switch is pressed group 3 feeds the left output
only and group 4 feeds only the right.
Studio feed L-R level control & Stereo switch
Sends signals from the main L-R mix (post main faders) to the Studio L &
R outputs. Normally both L & R are sent to both L & R studio outputs,
but if the Stereo switch is pressed mix Left feeds the left output only and
mix Right feeds only the right output.
Studio feed submix Mono mix level control
Sends signal from the master Mono mix (post master fader) to the Studio
L & R outputs.
Studio feed submix master level control
Controls the overall level of the Studio Output submix from off (fully
attenuated) to +10db gain.
Studio Output AFL
An After Fade Listen switch to select the post Level control left & right
Studio outputs to the AFL monitoring system in stereo.
A full description of the monitoring system is given on page 29.
R
STUDIO OUT 2
L
R
L
STUDIO OUT 1
Allen & Heath 25 GS_R24 User Guide
MAIN & MONITOR OUTPUTS & 2-TRACK INPUTS
REAR PANEL CONNECTIONS
2TRACK 2 IN/OUT Phono sockets
Standard RCA phono sockets for unbalanced stereo (2Track) inputs and outputs.
Nominal level = 0dBu
2TRACK 1 input jack sockets
Standard 1/4” (6.25mm) Jack sockets for stereo (2Track) Wired Tip=Hot(+), Ring=Cold
(0V), Sleeve=Chassis. Nominal level is 0dBu.
Main L & R mix 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 –2dBu.
Main Mix L & R Output xlr connectors (2Track1)
Standard 3-pin xlr connector for main Left & Right mix outputs. Electronically balanced.
Wired Pin2=Hot(+), Pin3=Cold(-), Pin1=Chassis. Nominal level is +4dBu.
Main Mono Mix Output jack socket
Standard 1/4” (6.25mm) Jack sockets for Mono mix output. Ground compensated.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is 0dBu.
Monitor headphones Output jack socket
Standard 1/4” (6.25mm) Jack sockets for Headphones output.
Wired Tip=Left, Ring=Right, Sleeve=Chassis.
Control room/Surround monitor output jack socket
Standard 1/4” (6.25mm) Jack sockets for line level output connections to powered speakers
or speaker amplifiers.
Wired Tip=Hot(+), Ring=Cold(0V), Sleeve=Chassis. Nominal level is 0dBu.
For a full description of the monitor speaker combinations please refer to pages 29 & 30.
Main Mono mix 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 –2dBu.
CRM/FRONT
R
INSERT L
INSERT R
L
R
2TRK2 IN
L
R
2TRK2 0UT
AUX
5
AUX
6
2TRK1 IN
L
2TRK1 IN
R
MAIN OUT
(2 Track 1)
ALT/REAR
R
L
CENTRE
SUB
MONO OUT
MONO INSERT
PHONES
ALLEN&HEATH
R
L
L
Allen & Heath 26 GS_R24 User Guide
2 TRACK DUB
L
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
PFL/AFL ACTIVE
R
2 TO 1
1 TO 2
2 TRACK 1
REPLACE L-R
TALK
LEV
MIN MAX
TALK
TO STUDIO
TO AUX 1 & 2
TO AUX 3 & 4
TO GROUPS
MIN MAX
LEVEL
PHONES
2 TRACK 1
2 TRACK 2
DIG MASTER
MAIN MIX L-R
MONO
MONO L-R
ALT SPKRS
MIN MAX
MASTER
DIG
L-R
INPUT
L-R/5.1
MIN MAX
LEVEL
CRM
17-2
5.1
A
L
DIM L-R
SPKRS
MASTER SECTION
L-R Monitor meters
12 segment LED meters sourced from the monitor section of the console.
0VU = Nominal working level (+4dBu at main L-R mix outputs).
PFL/AFL Active LED
Illuminates when the PFL or AFL system is activated by pressing a channel solo
switch in PFL or AFL mode, or any AFL switch in the master section. The me-
ters will show the signal level from selected sources.
2 Track Dubbing switches
These allow easy copying from one 2 Track recording machine to another with-
out unplugging the equipment from the console. 2 TO 1 connects the 2Track 2
inputs to the 2Track 1 outputs (main xlr), and likewise 1 TO 2 connects the
2Track 1 input jacks to the 2Track 2 RCA Phono output connectors.
2 Track 1 Replace L-R switch
Pressing this switch disconnects the main L-R mix from the main outputs and
replaces it with the stereo 2Track 1 inputs. This can be useful for exclusive play-
back, or background music where signals from the main mix are not desired.
Talkback microphone, level and routing switches
A built-in electret microphone is provided for talkback communication. The
Talk Lev control varies the level from the microphone and the routing switches
allow the user to select between the Studio Outputs, Pairs of Auxes, or all four
Group outputs.
The signal from the microphone will not be active unless the TALK switch is
pressed, which is a non-latching switch so you have to keep your finger on it.
Headphones Level control
Adjusts the level to the headphones jack sockets (one on the front panel and a
second on the rear).
Monitor system source default selection switches
These select the default source for the headphones and speaker monitors. The
switches work on a priority method with one source selected at a time.
For example if all the switches were pressed, only the 2Track 1 would be moni-
tored. This source is overridden by any pressed AFL sources, which in turn is
overridden by any PFL sources.
CRM Level (L-R or 5.1 surround)
Adjusts the level to the main control room speakers, alternate speakers or the
surround sound speakers if the console monitoring is in 5.1 Surround mode.
Mono L-R switch
Selects a mono sum of the L-R monitor outputs to headphones, CRM L-R and
ALT L-R for checking phase and stereo aspects of a mix. This switch does not
affect any of the channels in 5.1 surround monitoring mode.
Alternative speakers switch
Swaps the control room L-R outputs to the Alternative Speaker output jacks in
order to use a second pair of monitoring or nearfield speakers.
Dim L-R speakers switch
Dims the control room or alternate speakers by 20dB when the phone rings.
Does not affect the surround monitor channels.
Digital Master return level control and routing switch
The interface return channels 31 & 32 can be routed to the main L-R mix bus
using this switch for playback or monitoring a master DAW track.
Allen & Heath 27 GS_R24 User Guide
PFL MODE
CLEAR
AFL MODE
OFF = SEL MODE
ADD MODE
SIP
SOLO
SOLO MODE
MONITORING MODES
PFL MODE switch
In PFL mode (PFL MODE switch pressed, AFL MODE not pressed),
pressing an input channel Solo switch will send a pre-fade (pre-mute)
signal to the PFL bus and trigger the PFL monitoring in the master
section. This will override any AFL monitoring from the master sec-
tion AFL switches.
AFL
DIGITAL MASTER IN
2 TRACK 2 IN
2 TRACK 1 IN
+
MONO
LR
CONTROL ROOM MONITORS
PHONES
LEVEL
LEFT
RIGHT
ALTERNATE SPEAKERS
LEFT
RIGHT
ALT
PFL
SURROUND ONLY
CENTRE
SUB BASS
MONO POSTFADE
L-R POSTFADE
DIM
-20dB
-20dB
MONITORS LEVEL
INTERFACE I/P CH 25-30
SURROUND
SOLO MODE
PFL
AFL
ADD
SOLO-IN-PLACE
LOGIC CONTROL FOR
SOLO MODES & MIDI
SOLO LOGIC
SOLO/SELECT
PFL
AFL L
AFL R
PREFADE
POSTFADE L
POSTFADE R
PFL BUS
AFL L BUS
AFL R BUS
AFL L SUM
AFL R SUM
PFL SUM
AFL MODE switch
In AFL mode (AFL MODE switch pressed, PFL MODE not pressed),
an input channel Solo switch will send a post fade, post pan signal to
the stereo AFL bus and trigger the AFL monitoring in the master
section. This will sum with any AFL monitoring signals selected in the
master section.
Solo in Place MODE
If both PFL and AFL mode switches are pressed then the monitoring
system is set for Solo in Place. If a Solo switch is pressed on any in-
put channel (mono or stereo input), all other un-pressed input chan-
nels will be muted. There is a SiP Safe switch on each stereo input
channel to inhibit the muting function.
The SiP system does not activate the monitoring circuitry in the
master section, so will not illuminate the PFL/AFL active LED by the
monitor meters, instead there are indicator LEDs in the meter-
bridge.
ADD MODE switch
Normally the channel Solo switches are exclusive—so they cancel any previously selected Solo switch. In
Add mode they do not cancel so more than one can be selected at a time.
SOLO CLEAR switch
Clears any active Solo switch. Illuminates when any Solo switches are active.
Select MODE
If neither PFL or AFL mode switches are pressed, the mono and stereo input channel Solo switches operate
as MIDI select buttons. Further information about the MIDI functionality can be found on page 32.
AFL/PFL monitoring system diagram
Allen & Heath 28 GS_R24 User Guide
17-24=AUX+GRP
5.1 SURROUND
17-24=AUX/GRP & 5.1 SURROUND SWITCHES
17-24=AUX+GRP
This recessed switch swaps the interface sends on channels 17-24 from
the mono input channels to the Aux 1-4 outputs and the four group
outputs. Useful when it is required to send groups of channels to a
DAW for recording or processing.
5.1 Surround monitor switch
Another recessed switch (to prevent accidental operation). This switch
enables 6 channels from the interface return (25-30) to be used for 5.1
surround mix monitoring from a DAW. The interface return signals are
routed through a single level control to six jack sockets on the rear
panel.
The selected stereo monitor source will be disconnected from the
monitoring system, but if the AFL or PFL system is activated, this will
override the 5.1 Surround monitoring present the PFL/AFL signals on
the control room or alternate speakers.
CONTROL ROOM MONITORS
LEFT
RIGHT
ALTERNATE SPEAKERS
LEFT
RIGHT
ALT
SURROUND ONLY
CENTRE
SUB BASS
DIM
-20dB
-20dB
MONITORS LEVEL
INTERFACE
SURROUND
RETURNS
CH 25-30
OLD
2-TRACK
MONITOR
PFL/AFL
GATE
Control Room Stereo/5.1 Surround monitoring system diagram
Allen & Heath 29 GS_R24 User Guide
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-2
0
-30
-1
6
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-1
6
-12
-3
0
+3
+6
+9
+1
6
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
Master L-R bus meters
Two moving coil VU meters show the post-fade level of the master stereo bus.
0VU = Nominal level (+4dBu) at the L-R output xlr connectors.
The Peak LED illuminates when the level is within 5dB of clipping.
The meters are illuminated with LEDs for long service illumination.
METERBRIDGE
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
+16
-6
-9
-20
-30
-16
-12
-3
0
+3
+6
+9
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
VU
20
10
7
5
3
0
3
5
PEAK
ALLEN & HEATH
LEFT RIGHT
SiP ACTIVE
SiP ENABLED
SiP status LEDs
Two LEDs indicate the status of the Solo in Place system. The SiP active LED indicates
whether the Solo in Place system has been selected as the monitoring mode (more info
on page 29). The SiP Enabled LED illuminates when any mono or stereo input channel
Solo switch has been pressed and is active.
Valve input channel meter
Twelve segment LED meter with peak type response fed from the corresponding valve
input channel pre-fade signal.
Stereo input channel meter
Twelve segment LED meter with peak type response fed from the corresponding stereo
input channel pre-fade signal. The signal is a mono sum of left & right channels.
Mono input channel meter
Twelve segment LED meter with peak type response fed from the corresponding mono
input channel pre-fade signal.
Allen & Heath 30 GS_R24 User Guide
MIDI CONTROL MODES OF OPERATION
Read/Mono Channel Fader enable switch
GS-R24M: When this switch is pressed the 24 mono input channel fad-
ers will read MIDI data from the MIDI input on the interface module
and if valid commands are received the motors will engage and move
the fader to the position required by the received data.
GS-R24: Enables MIDI data to be sent from the 24 mono input channel
faders to the MIDI output on the interface module. If not pressed then
no MIDI data will be sent from the mono input channel faders.
PFL MODE
CLEAR
READ
WRITE
AFL MODE
OFF = SEL MODE
OFF = NO FADER MIDI
ADD MODE
M
SIP
SOLO
SOLO MODE
MIDI FADER MODE
GS-R24M GS-R24
MONO CH
MONO O/P
MIDI ENABLEDMOTOR FADERS
MIDI FADER MODE switches
The fader mode switches configure the operation of the MIDI enabled
channel faders. The switches function differently depending on whether
you have the GS-R24M with motorised faders or the GS-R24 without
motorised faders.
Write/Mono Master Fader enable switch
GS-R24M: This switch enables MIDI data to be sent from the 24 mono
input channel faders to the MIDI output on the interface module. If not
pressed then no MIDI data will be sent from the mono input channel
faders.
GS-R24: Enables MIDI data to be sent from the Mono bus master fader
to the MIDI output on the interface module. This allows a single
100mm fader to be used to control MIDI parameters. The fade function
on the Mono output signal is bypassed at unity gain when this switch is
engaged.
SOLO/
SELECT
SOLO/SELECT switches in SEL mode
If the Solo mode is set to SEL (both PFL and AFL mode switches set to
their up position, then the channel Solo switches function as MIDI select
switches primarily designed to map to DAW functions such as track
solo, track mute or record arm.
Pressing the switch will send a MIDI message via the MIDI out on the
interface module which can either be mapped, learned or translated by
the DAW or computer software.
The LED illumination of the switch can be set to either follow the
switch press only (internal tally) or to follow the status of the function
mapped in software by responding to MIDI input (external tally). This is
set by the console mode configuration on power up described on page
37.
The Select switches can work in the same fashion as the PFL/AFL system
where in ADD mode more than one can be selected simultaneously,
otherwise pressing a Select switch will cancel any previously selected.
Also, the Solo Clear switch illuminates when any are active, and will
clear any selected.
Allen & Heath 31 GS_R24 User Guide
O
1
MIDI
2
127
MIDI
O
127
R
GTS STOP PLAY RECGTE
SHIFT
10
0
10
20
30
40
MIDI CONTROLLERS
60mm MIDI faders
Two 60mm faders are provided for assigning to parameters in your DAW that
can be controlled by MIDI. They are permanently enabled so will send MIDI
data via the MIDI output on the interface module whenever they are moved.
Rotary MIDI controls
Twelve rotary MIDI potentiometers are provided to control rotary type pa-
rameters in your DAW such as track Pans, Send levels or processing controls.
These are purely one way MIDI controllers—there is no bi-direction tally or
feedback, so DAW features such as MIDI pick-up mode may be implemented
when controlling multiple parameters with one control.
Transport control switches
Five switches primarily used for transport control of a recording system—
either in a DAW or a hardware device such as a tape machine.
The default standard in MIDI Machine Control (MMC) but can be configured
to send MIDI note on/off data.
The Stop, Play and Record switches can be configured so that the illumination
either tallies internally or externally via MIDI message feedback.
MIDI switches
Fourteen switches send MIDI
data for assigning and control-
ling parameters in your DAW.
The switched labelled 1 to 8
have illumination that can be
tallied either internally or via
MIDI feedback from a DAW.
The Shift button sends MIDI
data and also modifies certain
data from other switches—see
MIDI implementation table.
Jogwheel
A rotary controller which
sends MIDI data for scrolling or
increment/decrement functions.
Mono Master fader
On the GS-R24 (not GS-R24M) the mono master fader can be
used as a MIDI control fader. When enabled the mono bus fade
function is bypassed at unity gain.
Allen & Heath 32 GS_R24 User Guide
MIDI Default data: ch = MIDI channel
MIDI IMPLEMENTATION
MIDI Implementation
There are two implementation modes for GS-R24:
1) The default set of MIDI data messages that is unique to GS-R24 which can be mapped, learned or translated by DAW
application software or MIDI translator software.
2) An emulation of the US 2400 MIDI control surface made by TASCAM.
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2
FADER CH1 0xB(ch) 0x01 0x(0-7F)
FADER CH2 0xB(ch) 0x02 0x(0-7F)
FADER CH3 0xB(ch) 0x03 0x(0-7F)
FADER CH4 0xB(ch) 0x04 0x(0-7F)
FADER CH5
0xB(ch)
0x05 0x(0-7F)
FADER CH6 0xB(ch) 0x06 0x(0-7F)
FADER CH7
0xB(ch)
0x07 0x(0-7F)
FADER CH8
0xB(ch)
0x08 0x(0-7F)
FADER CH9
0xB(ch)
0x09 0x(0-7F)
FADER CH10
0xB(ch)
0x0A 0x(0-7F)
FADER CH11
0xB(ch)
0x0B 0x(0-7F)
FADER CH12
0xB(ch)
0x0C 0x(0-7F)
FADER CH13
0xB(ch)
0x0D 0x(0-7F)
FADER CH14
0xB(ch)
0x0E 0x(0-7F)
FADER CH15
0xB(ch)
0x0F 0x(0-7F)
FADER CH16
0xB(ch)
0x10 0x(0-7F)
FADER CH17
0xB(ch)
0x11 0x(0-7F)
FADER CH18
0xB(ch)
0x12 0x(0-7F)
FADER CH19
0xB(ch)
0x13 0x(0-7F)
FADER CH20
0xB(ch)
0x14 0x(0-7F)
FADER CH21
0xB(ch)
0x15 0x(0-7F)
FADER CH22
0xB(ch)
0x16 0x(0-7F)
FADER CH23
0xB(ch)
0x17 0x(0-7F)
FADER CH24
0xB(ch)
0x18 0x(0-7F)
FADER Mono M 0xB(ch) 0x21 0x(0-7F)
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 SHIFT
DATA 1
ROTARY 1 0xB(ch) 0x40 0x(0-7F) 0x4E
ROTARY 2 0xB(ch) 0x41 0x(0-7F) 0x4F
ROTARY 2 0xB(ch) 0x42 0x(0-7F) 0x50
ROTARY 4 0xB(ch) 0x43 0x(0-7F) 0x51
ROTARY 5
0xB(ch)
0x44 0x(0-7F) 0x52
ROTARY 6 0xB(ch) 0x45 0x(0-7F) 0x53
ROTARY 7
0xB(ch)
0x46 0x(0-7F) 0x54
ROTARY 8
0xB(ch)
0x47 0x(0-7F) 0x55
ROTARY 9
0xB(ch)
0x48 0x(0-7F) 0x56
ROTARY 10
0xB(ch)
0x49 0x(0-7F) 0x57
ROTARY 11
0xB(ch)
0x4A 0x(0-7F) 0x58
ROTARY 12
0xB(ch)
0x4B 0x(0-7F) 0x59
FADER 1
0xB(ch)
0x4C 0x(0-7F) 0x5A
FADER 2 0xB(ch) 0x4D 0x(0-7F) 0x5B
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 DATA 3 DATA 4 DATA5 DATA 6
REW MMC 0xF0 0x7F 0x7F 0x06 0x05 0xF7
STOP MMC 0xF0 0x7F 0x7F 0x06 0x01 0xF7
PLAY MMC 0xF0 0x7F 0x7F 0x06 0x02 0xF7
FFW MMC 0xF0 0x7F 0x7F 0x06 0x04 0xF7
REC MMC 0xF0 0x7F 0x7F 0x06 0x06 0xF7
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 ON/OFF
REW 0x9(ch) 0x67 0x7F ON
REW 0x8(ch) 0x67 0x00 OFF
STOP 0x9(ch) 0x68 0x7F ON
STOP 0x8(ch) 0x68 0x00 OFF
PLAY 0x9(ch) 0x69 0x7F ON
PLAY 0x8(ch) 0x69 0x00 OFF
FFW
0x9(ch)
0x6A 0x7F ON
FFW
0x8(ch)
0x6A 0x00 OFF
REC
0x9(ch)
0x6B 0x7F ON
REC 0x8(ch) 0x6B 0x00 OFF
Allen & Heath 33 GS_R24 User Guide
MIDI IMPLEMENTATION
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 ON/OFF
JOG WHEEL SW 0x9(ch) 0x7A 0x7F ON
JOG WHEEL SW 0x8(ch) 0x7A 0x00 OFF
JOG WH RIGHT 0xB(ch) 0x7B 0x(0-3E)
JOG WH LEFT 0xB(ch) 0x7B 0x(3F-7F)
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 ON/OFF
SHIFT 0x9(ch) 0x6C 0x7F ON
SHIFT 0x8(ch) 0x6C 0x00 OFF
BUTTON 1 0x9(ch) 0x6D 0x7F ON
BUTTON 1
0x8(ch)
0x6D 0x00 OFF
BUTTON 2 0x9(ch) 0x6E 0x7F ON
BUTTON 2 0x8(ch) 0x6E 0x00 OFF
BUTTON 3
0x9(ch)
0x6F 0x7F ON
BUTTON 3
0x8(ch)
0x6F 0x00 OFF
BUTTON 4
0x9(ch)
0x70 0x7F ON
BUTTON 4
0x8(ch)
0x70 0x00 OFF
BUTTON 5
0x9(ch)
0x71 0x7F ON
BUTTON 5
0x8(ch)
0x71 0x00 OFF
BUTTON 6
0x9(ch)
0x72 0x7F ON
BUTTON 6
0x8(ch)
0x72 0x00 OFF
BUTTON 7
0x9(ch)
0x73 0x7F ON
BUTTON 7
0x8(ch)
0x73 0x00 OFF
BUTTON 8
0x9(ch)
0x74 0x7F ON
BUTTON 8
0x8(ch)
0x74 0x00 OFF
UP ARROW
0x9(ch)
0x75 0x7F ON
UP ARROW
0x8(ch)
0x75 0x00 OFF
LEFT ARROW
0x9(ch)
0x76 0x7F ON
LEFT ARROW
0x8(ch)
0x76 0x00 OFF
CENTRE
0x9(ch)
0x77 0x7F ON
CENTRE
0x8(ch)
0x77 0x00 OFF
RIGHT ARROW
0x9(ch)
0x78 0x7F ON
RIGHT ARROW
0x8(ch)
0x78 0x00 OFF
DOWN ARROW
0x9(ch)
0x79 0x7F ON
DOWN ARROW
0x8(ch)
0x79 0x00 OFF
MIDI Default data: ch = MIDI channel
Allen & Heath 34 GS_R24 User Guide
MIDI IMPLEMENTATION
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 ON/OFF SHIFT
DATA 1
SEL 1 0x9(ch) 0x01 0x7F ON 0x23
SEL 1 0x8(ch) 0x01 0x00 OFF 0x23
SEL 2 0x9(ch) 0x02 0x7F ON 0x24
SEL 2
0x8(ch)
0x02 0x00 OFF 0x24
SEL 3 0x9(ch) 0x03 0x7F ON 0x25
SEL 3 0x8(ch) 0x03 0x00 OFF 0x25
SEL 4
0x9(ch)
0x04 0x7F ON 0x26
SEL 4
0x8(ch)
0x04 0x00 OFF 0x26
SEL 5
0x9(ch)
0x05 0x7F ON 0x27
SEL 5
0x8(ch)
0x05 0x00 OFF 0x27
SEL 6
0x9(ch)
0x06 0x7F ON 0x28
SEL 6
0x8(ch)
0x06 0x00 OFF 0x28
SEL 7
0x9(ch)
0x07 0x7F ON 0x29
SEL 7
0x8(ch)
0x07 0x00 OFF 0x29
SEL 8
0x9(ch)
0x08 0x7F ON 0x2A
SEL 8
0x8(ch)
0x08 0x00 OFF 0x2A
SEL 9
0x9(ch)
0x09 0x7F ON 0x2B
SEL 9
0x8(ch)
0x09 0x00 OFF 0x2B
SEL 10
0x9(ch)
0x0A 0x7F ON 0x2C
SEL 10
0x8(ch)
0x0A 0x00 OFF 0x2C
SEL 11
0x9(ch)
0x0B 0x7F ON 0x2D
SEL 11
0x8(ch)
0x0B 0x00 OFF 0x2D
SEL 12
0x9(ch)
0x0C 0x7F ON 0x2E
SEL 12 0x8(ch) 0x0C 0x00 OFF 0x2E
MIDI
CONTROLLER
MESSAGE
TYPE
DATA 1 DATA 2 ON/OFF SHIFT
DATA 1
SEL 13 0x9(ch) 0x0D 0x7F ON 0x2F
SEL 13 0x8(ch) 0x0D 0x00 OFF 0x2F
SEL 14 0x9(ch) 0x0E 0x7F ON 0x30
SEL 14
0x8(ch)
0x0E 0x00 OFF 0x30
SEL 15 0x9(ch) 0x0F 0x7F ON 0x31
SEL 15 0x8(ch) 0x0F 0x00 OFF 0x31
SEL 16
0x9(ch)
0x10 0x7F ON 0x32
SEL 16
0x8(ch)
0x10 0x00 OFF 0x32
SEL 17
0x9(ch)
0x11 0x7F ON 0x33
SEL 17
0x8(ch)
0x11 0x00 OFF 0x33
SEL 18
0x9(ch)
0x12 0x7F ON 0x34
SEL 18
0x8(ch)
0x12 0x00 OFF 0x34
SEL 19
0x9(ch)
0x13 0x7F ON 0x35
SEL 19
0x8(ch)
0x13 0x00 OFF 0x35
SEL 20
0x9(ch)
0x14 0x7F ON 0x36
SEL 20
0x8(ch)
0x14 0x00 OFF 0x36
SEL 21
0x9(ch)
0x15 0x7F ON 0x37
SEL 21
0x8(ch)
0x15 0x00 OFF 0x37
SEL 22
0x9(ch)
0x16 0x7F ON 0x38
SEL 22
0x8(ch)
0x16 0x00 OFF 0x38
SEL 23
0x9(ch)
0x17 0x7F ON 0x39
SEL 23
0x8(ch)
0x17 0x00 OFF 0x39
SEL 24
0x9(ch)
0x18 0x7F ON 0x3A
SEL 24
0x8(ch)
0x18 0x00 OFF 0x3A
SEL ST1
0x9(ch)
0x21 0x7F ON 0x43
SEL ST1
0x8(ch)
0x21 0x00 OFF 0x43
SEL ST2
0x9(ch)
0x22 0x7F ON 0x44
SEL ST2 0x8(ch) 0x22 0x00 OFF 0x44
MIDI Default data: ch = MIDI channel
Allen & Heath 35 GS_R24 User Guide
POWER-UP CONFIGURATION MODES
Power the console ON whilst holding down PLAY
MIDI Operation modes
It is possible to set GS-R24 to work in different ways depending on preference and the capability of externally connected
equipment. These modes are primarily concerned with setting up the illumination of the Solo Select switch LEDs so that they
tally entirely from the console function or from external MIDI messages received by the console. The modes can also set a tick
message which is required when translating the GS-R24 default MIDI code into the HUI protocol, change the transport from
MMC to note on/off, and set the console into self test or demo mode.
To Set the configuration mode:
Release PLAY and press one of the following Solo/SEL buttons
SEL switch Mode
1 Default MIDI, Internal tally, press/release = note on/off
2 Default MIDI, Internal tally, press once for note on, press again for note off
3 Default MIDI, External tally, press/release = note on/off
4 Default MIDI, External tally, press once for note on, press again for note off
5 REAPER Mode (Pending Controller plug-in becoming available)
6 Default MIDI, External tally, HUI tick ON. For translating to HUI protocol.
7 US 2400 Emulation
8 Test & Demo mode.
To Set the MIDI Channel number:
Power the console ON whilst holding down REC
Release REC and press one of the following Solo/SEL buttons
SEL switch Mode
1 MIDI channel 1
2 MIDI channel 2
3 MIDI channel 3
4 MIDI channel 4
5 MIDI channel 5
6 MIDI channel 6
7 MIDI channel 7
8 MIDI channel 8
9 MIDI channel 9
10 MIDI channel 10
11 MIDI channel 11
12 MIDI channel 12
13 MIDI channel 13
14 MIDI channel 14
15 MIDI channel 15
16 MIDI channel 16
Press STOP and the configuration mode is set
Press STOP and the MIDI channel number is set
Allen & Heath
36
Basic guide for console connections
CONNECTION DIAGRAM (BASIC)
CRM/FRONT
R
ST3 IN
R
L
R
STUDIO OUT 2
L
R
L
STUDIO OUT 1
INSERT
L
INSERT R
ST1 IN
R
L
L
R
2TRK2 IN
ST4
L/M
R
IN
ST2
L/M
R
IN
INST
INSERT
DIRECT
OUT
IN
INSERT
DIRECT
OUT
VALVE PRE 1VALVE PRE 2
L
R
2TRK2 0UT
AUX
1
AUX
2
AUX
3
AUX
4
AUX
5
AUX
6
GRP 1
INSERT
OUT
GRP
2
INSERT
OUT
GRP
3
INSERT
OUT
GRP
4
INSERT
OUT
DC
POWER
IN
DIRECT
OUT
INSERT
LINE
MICMIC MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
DIRECT
OUT
INSERT
LINE
MIC
M1M2M3M4M5M6M7M8M9M10M11M12M13M14M15M16
DIRECT
OUT
INSERT
LINE
MIC
M17
DIRECT
OUT
INSERT
LINE
MIC
M18
DIRECT
OUT
INSERT
LINE
MIC
M19
DIRECT
OUT
INSERT
LINE
MIC
M20
DIRECT
OUT
INSERT
LINE
MIC
M21
DIRECT
OUT
INSERT
LINE
MIC
M22
DIRECT
OUT
INSERT
LINE
MIC
M23
DIRECT
OUT
INSERT
LINE
MIC
M24
2TRK1 IN
L
2TRK1 IN
R
MAIN OUT
(2 Track 1)
LINE/
INST
IN
LINE/
ALT/REAR
R
L
CENTRE
SUB
MONO OUT
MONO INSERT
PHONES
ALLEN&HEATH
Serial No.
ENGINEERED IN ENGLAND BY ALLEN & HEATH LIMITED. MADE IN ENGLAND.
R
L
L
fx
fx
Amp
KT-88
KEY:
MICROPHONE SIGNAL
FROM DIRECT BOX
LINE LEVEL SIGNALS
EFFECTS RETURN
ARTISTS STUDIO MONITOR
SIGNALS (LINE LEVEL)
EFFECTS SEND
ALTERNATE SPEAKER
SIGNALS (LINE LEVEL)
MAIN CRM SIGNALS
(LINE LEVEL)
FROM INSTRUMENT
PICKUP
Allen & Heath 37 GS_R24 User Guide
MONO CHANNEL WORKFLOW ROUTING OPTIONS
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
NONE PRESSED
1) RECORDING DIRECT FROM THE PRE-AMP, DIRECT MONITORING/MIXING
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
A PRESSED
2) RECORDING DIRECT FROM THE EQ, DIRECT MONITORING/MIXING
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
B PRESSED
3) INSERT PROCESSING BY DAW, OR DIRECT RECORDING WITH EQ ON MONITOR PATH
Allen & Heath 38 GS_R24 User Guide
MONO CHANNEL WORKFLOW ROUTING OPTIONS
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
A&C PRESSED
4) RECORDING DIRECT FROM THE EQ, DAW TRACK MONITORING/MIXING
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
C&D PRESSED
5) MIXING IN DAW USING FADER AS CONTROLLER, MONITOR VIA BYPASSED FADER
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
B PRESSED
6) ANALOGUE SUMMING MIXDOWN FROM DAW TRACK USING AUTOMATED FADES
MIDI
Allen & Heath 39 GS_R24 User Guide
MONO CHANNEL WORKFLOW ROUTING OPTIONS
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
C PRESSED
7) OVER-DUBBING/RECORDING DIRECT FROM PRE-AMP, MONITORING DAW TRACK OUTPUT
PREAMP
INSERT EQ FADER MIX
DIGITAL
AUDIO
WORK
STATION
I
O
GS-R24 MONO INPUT CHANNEL PATH
DAW
A
B
C
D
A&B PRESSED
8) USING ANALOGUE INSERT & EQ ON A DIGITAL TRACK (FEEDBACK LOOP POSSIBLE!)
Allen & Heath 40 GS_R24 User Guide
OPTION LINK DETAILS INTERNALLY SET OPTION JUMPER LINKS
PREFADE AUX SOURCE = PRE MUTE
Mono Input channel option links.
PREFADE AUX SOURCE = POST MUTE
AUX 5&6 SOURCE = POST FADER
AUX 5&6 SOURCE = PRE FADER
POST EQ (BEFORE CONFIG SW C)
POST EQ (AFTER CONFIG SW C)
POST FADER (CAN BE BYPASSED)
POST FADER (CANNOT BE BYPASSED)
Stereo Input channel option links.
AUX 5&6 SOURCE = POST FADER
AUX 5& 6 SOURCE = PRE FADER
DIRECT OUT SOURCE
AUX OPTIONS
PREFADE AUX SOURCE = POST MUTE
PREFADE AUX SOURCE = PRE MUTE
PREFADE AUX SOURCE = POST MUTE
PREFADE AUX SOURCE = PRE MUTE
AUX 5&6 OPTIONS
PREFADE AUX OPTIONS
Allen & Heath 41 GS_R24 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 42 GS_R24 User Guide
PRODUCT SUPPORT
Registering your product
Thank you for buying the Allen & Heath GS-R24 mixer. We hope that you are happy with it and that you enjoy many years of
faithful service with it, and record and mix some great music.
Please go to www.allen-heath.com/register now 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
Product Support: You can access Allen & Heath Tech Support by logging onto http://allen-heath.helpserve.com
Investigate ALLEN & HEATH’s other ranges at www.allen-heath.com
Large Live Sound mixers — iLive digital, and GL Series
Small Format Live Sound mixers — ZED, MixWizards and PA Series
DJ products — Xone Series
Sound Management, Broadcast and Recording —
iDR, XB and ZED-R Series
22


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