• Year
  • 1947
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 225031

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

 Technical Specifications

  • Number of Tubes
  • 12
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 35 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Amplifier 620 - Fairchild Camera and
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • From Radio & Television Retailing August 1947
    The No. 620 power amplifier is the first of 12 matched sound equipment units being currently announced; the other including No. 621 mike pre-amplifier, line preamps and boosters, switch panels with volume indicators and monitor take-offs, mixers, equalizers, bridging devices and auxiliary power supplies. No. 620 delivers 35W into 500 ohms isolated output with less than 5% distortion, within 1 db.

  • Mentioned in
  • -- Schematic
  • Author
  • Model page created by Heiko zur Mühlen. See "Data change" for further contributors.

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