• Year
  • 1929
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 58000

 Technical Specifications

  • Number of Tubes
  • 2
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: SM-676 - Silver - Marshall; Chicago, IL
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • Single stage Dynamic Speaker Amplifier.
  • Price in first year of sale
  • 55.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (1)
  • Walter Ashe Radio Co. catalogue for season 1928-1929

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