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2B-LP POWER AMPLIFIER
      SCHEMATIC
                                                                                               PRIMARY                                                  MAIN BOARD 2B-MB/4.3

                                                                                                PRIMARY


                                                                                                +47 Vdc




        HOT

     LOAD


                                                 Power bus board 2B-PBB     Thermal
                      Neutral                                               Breaker

                       Hot                                                  Thermal
                                                                            Breaker
                                      TL2 TR1     TL1 TR2




    Primary                                                                                                                                      BIAS
    Phase 1
                                      66Vct                                +47 Vdc
                                                                                                 INPUT "M"
                                       2A7                                                     From Left Ch.

                                                                           -47 Vdc


                                                                           Ground               - INPUT
    Primary
    Phase 2



                                                      Back board 2B-BB    LEFT SPKR.
    RED           +                                                        OUTPUT
  BLACK           -                                                        LEFT Ch.             SPEAKER
                                                                          OUTPUT "M"
 Binding Post                                                                                   OUTPUT
 Connectors                                                                RIGHT Ch.
  BLACK           -                                                        INPUT "M"
                                                                           RICHT Ch.            POWER
    RED           +                                                       SPKR Output           GROUND
                                                                           POWER
                Chassis                                                    GROUND
                Ground
                                                                          SIG. GROUND
                                                                                                + INPUT
                                                                          LEFT INPUT
                                                                          RIGHT INPUT


                                                                           +47 Vdc

                                                                                                SIGNAL
                                                                                                GROUND


                                                                           OUTPUT




                                                                           SIGNAL
                                                                           GROUND




                                                                           -47 Vdc              -47 Vdc


              This symbol indicates interconnection                 This symbol indicates interconnection via   ALL CAPACITORS ARE IN MICRO
LABEL                                                       LABEL
              via card edge conector.                               quick dis-connect tabs & sockets            FARADS EXCEPT WHERE NOTED.
              This symbol indicates interconnection via                                                         ALL RESISTORS ARE 1/4 WATT/1 %
LABEL                                                                                                           EXCEPT WHERE NOTED.
              soldered wires.

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