12 Watt P.A. Amplifier

Partridge Transformers Ltd; London

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  • Year
  • 1938 ??
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 339923

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: 12 Watt P.A. Amplifier - Partridge Transformers Ltd;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 16 x 9 x 9 inch / 406 x 229 x 229 mm
  • Notes

  • Partridge 12w. P.A. Amplifier Design.

    The object of this design is to provide a high-quality portable amplifier with negligible background noise, making it suitable for high-quality work in small rooms as well as for the usual small hall and outdoor work. The special points of interest are:-

    • 12 watts undistorted output
    • Independent Control and mixing for two microphones and a pick-up
    • Sufficient amplification to give a good range with carbon microphonics and close range with moving coil microphones without the need for a pre-amplifier.
    • High-quality push-pull (Class A) output giving a level response from 30 to 15,000 cycles.
    • Special output transformer enables the exact matching of any number of similar speakers from one to any number of similar speakers

     

  • Net weight (2.2 lb = 1 kg)
  • 27 lb (27 lb 0 oz) / 12.258 kg
  • Mentioned in
  • -- Original prospect or advert (Partridge Amplifier Circuits, c1938 by N Partridge, B.Sc., A.M.I.E.E.)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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