4030 One Stage Audio Amplifier

Atwater Kent Mfg. Co.; Philadelphia, USA

  • Year
  • 1923
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 187048

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • Audio-Amplification; 1 AF stage(s)
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: 4030 One Stage Audio Amplifier - Atwater Kent Mfg. Co.;
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 5.75 x 3 x 5.75 inch / 146 x 76 x 146 mm
  • Notes
  • The one stage audio amplifier came after the two stage AK audio amplifiers. The unit was assigned the part number 4030 by Atwater Kent. The one-stage unit consisted of an audio transformer insulated from the metal case with a sheet of phenolic and encased in a tar-like substance. The filament was controlled by a 2 ohm rheostat. there were three different variations of this amplifier. The first version used a 2-Stage tag with the 2 painted over with black paint. The second version had the 2 milled off and a 1 stamped in it's place. The last version had a 1-Stage id tag like the 2-Stage amp with the 1 raised up. This part was sold to hobbyists who wanted another stage of audio amplification. It was never used in a AK production radio.
  • Literature/Schematics (1)
  • Radio Age Newsletter February 2007
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

 Collections | Museums | Literature


The model 4030 is part of the collections of the following members.