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2B-LP POWER AMPLIFIER SCHEMATIC
PRIMARY PRIMARY +47 Vdc
MAIN BOARD 2B-MB/4.3
HOT LOAD
Neutral Hot TL2 TR1
Power bus board 2B-PBB
Thermal Breaker Thermal Breaker
TL1 TR2
Primary Phase 1
BIAS
66Vct 2A7
+47 Vdc -47 Vdc Ground
INPUT "M" From Left Ch.
Primary Phase 2
- INPUT
RED BLACK
Binding Post Connectors
+
Back board 2B-BB
-
LEFT SPKR. OUTPUT LEFT Ch. OUTPUT "M" RIGHT Ch. INPUT "M" RICHT Ch. SPKR Output POWER GROUND SIG. GROUND LEFT INPUT RIGHT INPUT
SPEAKER OUTPUT
BLACK RED
+
Chassis Ground
POWER GROUND
+ INPUT
+47 Vdc
SIGNAL GROUND
OUTPUT
SIGNAL GROUND
-47 Vdc
-47 Vdc
LABEL LABEL
This symbol indicates interconnection via card edge conector. This symbol indicates interconnection via soldered wires.
LABEL
This symbol indicates interconnection via quick dis-connect tabs & sockets
ALL CAPACITORS ARE IN MICRO FARADS EXCEPT WHERE NOTED. ALL RESISTORS ARE 1/4 WATT/1 % EXCEPT WHERE NOTED.