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2.3
Signal Inputs
signal name
B in
L in
C in
R in
LS in
RS in
signal ground
L,R,B mute
C mute
LS,RS mute
Notes:
1.)
The bass amplifier output transistors will cross-conduct when attempting to amplify
high-frequency signals. This cross-conduction will eventually destroy the output
transistors. This is not a problem in practice because the bass eq. severely attenu-
ates frequencies above the bassbox crossover (about 250Hz).
2.)
The mute inputs have pull-down resistors; leaving them disconnected will leave the
amps muted.
3.)
The mute or un-mute requires about 10msec to take effect.
2.4
Signal Outputs
signal name
B+
B-
L+
L-
R+
R-
C+
C-
LS +
Framingham, MA 01701-9168
location
characteristic
J700 pin 2
bass audio input
J700 pin 10
left audio input
J700 pin 9
center audio input
J700 pin 12
right audio input
J700 pin 7
left surround audio input
J700 pin 6
right surround audio input
J700 pin 11
input ground reference
J700 pin 2
logic signal
J700 pin 3
logic signal
J700 pin 4
logic signal
location
characteristic
J703 pin 2
bass audio output
J703 pin 1
bass audio return
J701 pin 2
left audio output
J701 pin 5
left, right audio return
J701 pin 4
right audio output
J701 pin 5
left, right audio return
J701 pin 3
center audio output
J701 pin 1
center audio return
J701 pin 8
left surround audio output
SIZE
FSCM
A
32108
notes
Do NOT exceed 2KHz (note 1).
ground reference for audio input
0V = mute, 5V = unmute
(notes 2,3)
0V = mute, 5V = unmute
0v = mute, 5V = unmute
notes
not short-circuit proof (note 1)
(note 2)
CLASS
DWG NO.
TS
197297
SHEET
REV.
52
00
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