Two-Stage Amplifier Model 4A

Sears, Roebuck & Co.; Chicago (IL)

  • Year
  • 1924
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 195960
    • Brand: Silvertone

 Technical Specifications

  • Number of Tubes
  • 2
  • Main principle
  • Audio-Amplification; 2 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Two-Stage Amplifier Model 4A - Sears, Roebuck & Co.; Chicago
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 11 x 7 x 8 inch / 279 x 178 x 203 mm
  • Notes
  • The Sears Roebuck Model 4A Two-Stage Audio Amplifier was a matching unit for the Model 4 Detector Receiving set. It sold for $33.35 complete with batteries and two WD12 tubes or $18.75 amp and cabinet alone. This amplifier was manufactured by the Crosley Radio Corp.
  • Net weight (2.2 lb = 1 kg)
  • 12 lb 0 oz (12 lb) / 5.448 kg
  • Price in first year of sale
  • 19.00 $
  • Literature/Schematics (1)
  • 1924 Sears Roebuck Radio catalog
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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