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FRONT
PANEL
FE
lURES
MODE SWITCH
MONO
When
the
MODE
Switch
is in
the
MONO
position,
all
input
signals are
summed.
Speakers
are
driven
as
shown
in Figure 5.
Use
the
MONO
position
for
A) phasing speakers
and
B) playing a
monaural
source
such
as TV
audio,
AM
radio
or
monaural
records
through
all
four
channels.
2 CH
When
the
MODE
Switch
is in
the
2 CH
position,
left-front
and
left-rear
inputs
are
summed.
Right-
front
and
right-rear
inputs
are
summed.
Speak-
ers are driven as
shown
in Figure 6.
Use
the
2 CH
position
for
playing
regular
stereo
records
without
synthesizing
rear channels.
DISCRETE
When
the
MODE
Switch
is in
the
DISCRETE
position, each
input
signal goes
to
its respective
output
channel.
Speakers
are
driven as
shown
in Figure 7.
Use
the
DISCRETE
position
for
A) playing dis-
crete
4-channel
sources
such as 0 -8
cartridges
or
CD-4 records,
and
B) playing 2-channel
stereo
programs
through
front
speakers
only
.
VARI-MATRIX
When
the
MODE
Switch
is in
the
VARI-MATRIX
position,
rear
input
signals
are
internally
discon-
nected.
Left-front
and
right-front
inputs
feed
left-front
and
right-front
speakers, as in
the
DIS-
CRETE
MODE. Rear
channel
signals
are
"syn-
thesized"
or derived
from
the
left-front
and
right-
front
input
signals.
The
characteristics
of
the
LEFT FRONT RIGHT FRONT
SPEAKER
SPEAKER
<,
",~'
"
.....
'"
'"
,
\ LF +
RF+
"~(''''LF
+ RF + I
\ LR +
RR
'" -. LR +
RR
'
\ '
,
\ I
'
\ ' \ ,
,,'
\I
I
"
\
/\
:\
I ,
, \
I LF + RF +
.....
"'LF
+ RF
+'
I LR +
RR
'>
~
LR +
RR
\
I ...
........
\
~,.
....................
...
.....
,"
"""
LEFT
REAR
RIGHT
REAR
SPEAKER
SPEAKER
,NPUT
SI
GNAL
OESIGNA.
TlONS
;
lFo<lEfT
fRONT
.
Rf-RIOHT
fRONT
LA-lEn
REAR .
RR-RIGHT
REAR
Figure
5.
Mono
Mode
Sound
Dispersion
rear
channel
signals
are
varied
by
the
DIMENSION
control.
Speakers
are
driven as
shown
in Figure 8.
LEFT FRONT
SPEA
KER
,,"
.......................
".
,.
<,
,"""
I
" LF + LR
.....
" RF.+
RR
I
,
.,."
<,
I
\
, I
'
\ I \
,I
, I
\I
"
"
I
1\
,
I \ ,
I ,
I \
I
.....
'"
,
I
,>"
. \
, LF + LR ",'" ..... RF +
RR
\
'"
"",'"
...................
.-
LEFT
REAR
RIGHT
REAR
SPEAKER
SPEAKER
INPUT
SI GN A L D ESIQN A,n ON S:
IF
-L EFT
fRONT
, RF - R IGH T FRONT
LA-LEFT
R
fA
R.
RR"RI
GHT REAR
Figure
6. 2-
channel
Mode
Sound
Dispersion
,
I
I
. I
I
I
\ I
\I
1\
I ,
\
,
\
RR
"
\
LEFT
REAR
RIGHT
REAR
SPEAKER
SPEAKER
LEFT FRONT RIGHT FRONT
SPEAKER
SPEAKER
\
\
\
\
,
\
\
'
,,'
I'
I \
I
I
I
I LR
I
IHf"VT
SIQNAl
DESIGNATIOHS
:
Lf-lEfT
FRONT
,
AF-RIGHT
FRONT
l R- l EFT REAR,
Aft-RIGHT
REAR
Figure
7.
Discrete
Mode
Sound
Dispersion
LEFT FRONT
SPEAKER
..
","
'"
'"
\ '...... "'" I
\ LF ..
~(",
RF I
\ '"
~/
\ I
, I
\ , \ I
, I
\I
't
1\
" I
1\\
I \
,'DERIVED '" DERIVED\
I FROM LF ...
,>~
FROM LF \
I AN
DR
E"''''
.........
ANDRF
\
"."/'
<;
.
...
.....
.-"
...
LEFT REAR RIGHT
REAR
SPEAKER SPEAKER
INPlIT
SIGNAL
DESIGNATIOJlIS :
V-LEFT
FRONT
,
RF-RIGHT
fRONT
lA-lEfT
AEAA ,
nA-HIGHT
REAR
Figure
8.
Vari·Matrix
Mode
Sound
Dispersion
7
11


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