• Year
  • 1931
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 58006

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Audio-Amplification; Screengrid 1926-1935
  • Wave bands
  • - without
  • from Radiomuseum.org
  • Model: SM-684 - Silver - Marshall; Chicago, IL
  • Notes
  • Push-pull af output stage.
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

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