• Year
  • 1928
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 249587

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm
  • from Radiomuseum.org
  • Model: Chassis RPA-5A - Brunswick-Balke-Collender Co.
  • Shape
  • Chassis only or for «building in»
  • Notes
  • Record / Radio input.

    Ballast tube UV886.

     

     

     

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