15 Watt Amplifier T-20W15

Thordarson Electric Mfg. Co. ; Chicago (IL)

Data
Forum
Pictures
Collections

  • Year
  • 1937 ??
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 183704

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 60 cycles, 115 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 15 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 15 Watt Amplifier T-20W15 - Thordarson Electric Mfg. Co. ;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 17 x 9 x 10 inch / 432 x 229 x 254 mm
  • Notes

  • Thordarson T-20W15 is an AC-operated audio amplifier with push-pull output stage.

    Two high impedance inputs for microphone and crystal or magnetic pick-up which can be mixed. Polarizing voltage is provided for static microphone or photo electric cell.

    Power output: 15 watts undistorted or +34 dB (less than 5% distortion)
    Field supply: 10 watts available for one 5000 ohm field or one or two 2500 ohm fields.
    Output impedances: 2, 3, 4, 6, 8, 16, 125, 250 or 500 ohms.
    Frequency response: Within ±1 dB from 40 cps to 15,000 cps with bass boost of 3.5 dB below 100 cps.

  • Mentioned in
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • Thordarson Amplifier Guide 346-D
  • Author
  • Model page created by Hannes Gerber. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum