ELECTRICAL PARTS LIST
Ref. No.
Description
Mfr
s
Part No.
Resistors
(All carbon film 1/4w
5%,unless noted otherwise)
R72
75Kohm
RFB375S
R81
75Kohm
RFB375S
R61
10Kohm
RFB310S
R86
7.5Kohm
RFB275S
R83
7.5Kohm
RFB275S
R77
5.6Kohm
RFB256S
R74
5.6Kohm
RFB256S
R70
5.6Kohm
RFB256S
R84
4.7Kohm
RFB247S
R66
3.9Kohm
RFB239S
R65
3.9Kohm
RFB239S
R87
1Kohm
RFB210S
R58
62Kohm
RFB362S
R62
82Kohm
RFB382S
R67
1Kohm
RFB210S
R76
820ohm
RFB182S
R71
820ohm
RFB182S
R73
680ohm
RFB168S
R63
680ohm
RFB168S
R9
3.3Mohm
RFB533S
R3
3.3Mohm
RFB533S
R59
47Kohm
RFB347S
R69
82Kohm
RFB382S
R10
560Kohm
RFB456S
R4
560Kohm
RFB456S
R23
390Kohm
RFB439S
R24
330Kohm
RFB433S
R19
100Kohm
RFB410S
R18
100Kohm
RFB410S
SPEAKER OUTPUT CONNECTION
the amplifier mag be used in conjunction with a speaker rated at 4,
8, 16 ohms or with 100V constant-voltage speaker systems.
BLOCK DIAGRAM
MIC1
MIC2
COM
4 OHM
8 OHM
16 OHM
100V
-55dB
10K ohms
50K ohms
-55dB
10K ohms
50K ohms
AUX
10K
PHONO
INPUT
INPUT
MASTER
POWER
AMP
POWER
SWITCH
AC FUSE
AC 117v/60Hz
150Hz
1KHz
6KHz
PRIORITY
TO POWER AMP
POWER LED
VOL PCB
POWER PCB
PU PCB
TO PRE AMP
OT-500
8W
8W
COM
4
W
Total impedance 16
W
8
W
16
W
100V
8W
8W
COM
4
W
Total impedance 16
W
8
W
16
W
100V
COM
4
W
8
W
16
W
100V
8W
8W
Total impedance 4
W
16W
16W
COM
4
W
Total impedance 8
W
8
W
16
W
100V
