PA Amplifier Push-Pull 2B6

Postal Radio, New York

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  • Year
  • 1934
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 354634

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 20 W (undistorted)
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: PA Amplifier Push-Pull 2B6 - Postal Radio, New York
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 15 x 8.5 x 11.5 inch / 381 x 216 x 292 mm
  • Notes

  • The Postal PA Amplifier Push-Pull 2B6 is a Public Address Amplifier that has the following features:

    • Power On / Off switch.
    • Mic / Phono switch.
      • Microphone input options: crystal, velocity, or dynamic.
      • Phonograph input.
    • Volume and Tone controls.
    • Speaker output drive impedance:  9, 15, 500, 4000 Ω.
    • Modulated Plate voltage is available for electro magnetic dynamic speakers.
    • Audio gain is 83 db at 1000 Hz.
    • Frequency response is substantially flat from 20 to 17,000 Hz.
    • Power consumption is 90 W when driving a total of 20 W output speakers.
    • Chassis is heavy-gauge auto-body steel, with a black crystalline finish.
  • Net weight (2.2 lb = 1 kg)
  • 45 lb (45 lb 0 oz) / 20.430 kg
  • Literature/Schematics (1)
  • Radio Craft (Nov. 1934, pages 286, 299 schematic & description, 306 ad.)
  • Author
  • Model page created by Jerry Elarton. See "Data change" for further contributors.

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