50 Watt Amplifier

BSR (Brand), Birmingham Sound Reproducers Ltd.; Staffordshire

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  • Year
  • 1932
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 135806
    • Brand: Birmingham Sound Reproducers

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 190-210; 210-230; 230-250 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 50 W (unknown quality)
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: 50 Watt Amplifier - BSR Brand, Birmingham Sound
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 16 x 10 x 9 inch / 406 x 254 x 229 mm
  • Notes

  • BSR 50-watt Amplifier.

    The specification includes an enameled steel chassis, Screened Grid L.F. Amplification, and 2 PP5/400 Power Valves. A 3-ratio Output Transformer and volume control are incorporated.
    Two input tapings are provided for Radio and Gramophone Pickup and three tapings for operation on mains of 190/210, 210/230, and 230/250 V, 50 Cycles.

    The Amplifier's characteristic is practically flat from 50 to 8,000 cycles, and its power is sufficient to feed at least 6 moving coil speakers.

    Plugs for supplying HT & LT AC to radio chassis are also incorporated.

    Price 19gns valves extra.

    A Radio Chassis is available for use with this Amplifier.

  • Price in first year of sale
  • 19.00 GNS
  • Literature/Schematics (1)
  • -- Original prospect or advert (Wireless & Gramophone Trader Dec 10, 1932, Page 22)
  • Author
  • Model page created by Roy Johnson. See "Data change" for further contributors.

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