• Year
  • 1972–1983
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 282771

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

 Technical Specifications

  • Number of Transistors
  • 12
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 50 W (undistorted)
  • from Radiomuseum.org
  • Model: Power Amplifier P51 - Sugden, J.E., Heckmondwike,
  • Dimensions (WHD)
  • 290 x 140 x 250 mm / 11.4 x 5.5 x 9.8 inch
  • Notes
  • Two versions were made, one using TO-3 output transistors and a later version using TO-220 output devices. Early models were fiited with conventional british bulgins three prongs mains plug, and were later replaced with normalized IEC three prongs mains plugs.

    A sliding switch allow mono or stereo operation to permit bridged operation using a second amplifier.

    The amplifier is said to be unaffected by reactive loads and specificaly designed to drive electrostatic loudspeakers.

  • Net weight (2.2 lb = 1 kg)
  • 9 kg / 19 lb 13.2 oz (19.824 lb)
  • Author
  • Model page created by Michel Cormier. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum