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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.