Duoforte C56 Leaky Grid Detection

Amalgamated Wireless (Australasia) Ltd. (AWA); Sydney

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  • Year
  • 1929
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 292950

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 9
  • Main principle
  • TRF without regeneration; 2 AF stage(s); something special ? Please give information (notes)
  • Wave bands
  • Broadcast only (MW).
  • Details
  • Record Player (not changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 190-250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Duoforte C56 [Leaky Grid Detection] - Amalgamated Wireless
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes

  • 9 Valve, AC powered, 4 stage, TRF Receiver with Anode Bend Detection and a push-pull audio Amplifier output stage.  Advertised for £125/- in May, 1929.

    Chassis:
    The chassis incorporates two units, a receiver and a power amplifier unit with rectifier.
    The early production C56 receivers used Anode Bend Detection and the later production, this model, used Leaky Grid Detection.

    Phonograph:
    Induction, motor driven turntable with speed control, automatic stop and a Tone arm with volume control.

    Cabinet:
    Console style cabinet with lid for the gramophone and doors on the front.
    This later production does not have a padded loudspeaker compartment.

     

     

  • Mentioned in
  • AWA service instructions, 1929
  • Literature/Schematics (1)
  • - - Manufacturers Literature (AWA Radiola Service Instruction 1929)
  AWA Duoforte C56 Pamplet 1653 KB
  AWA Duoforte C56 Service Notes Leaky Grid & Anode Bend 164 KB
  • Documents regarding this model
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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