Bose Panaray 502A Service Manual page 45

Amplifier
Hot (+) Shield/ground
Input
connectors
INPUT
INPUT LEVEL
–10 +4
+ – + –
SER. NO. D.O.M.
CH 1
Input
attenuator
switches
Figure 18. 502C Controller Back Panel (Barrier Strip Version Shown)
Input Connections
Shield and ground
Unconnected
To unbalanced input
on amplifier
Output Connections
Figure 17. Unbalanced Connections
High frequency
connectors
HIGH FREQ OUTPUT
MODE
INPUT LEVEL
4
3
–10 +4
2
1
+ –
CH 2 C H 1
PROTECTED BY U.S. PATENT 3,038,964
Mode
switch
Amplifier
pin 1
pin 3
output
Bass level
control
LOW FREQ
LEVEL
.
0
OUTPUT MODE
NORM SUM
+3
-18
+ –
BOSE CORPORATION, FRAMINGHAM, MA 01701-9168
C H 2
ENGINEERED AND MANUFACTURED IN U.S.A.
Bass mono
sum switch
45
OUTPUT
Hot (+)
pin 2
To unbalanced input
on amplifier
Low frequency
output
connectors
LOW FREQ OUTPUT
~
230V
50/60Hz 12W
LISTED 411F
U
L
+ – + – ®
COMMERCIAL
CH 1 CH 2 SOUND
EQUIPMENT
AC