65 Watt Amplifier

Radford Electronics Ltd.; Bristol

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  • Year
  • 1953
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 360450

 Technical Specifications

  • Number of Tubes
  • 12
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 230 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 65 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 65 Watt Amplifier - Radford Electronics Ltd.;
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 19.25 x 13 x 13 inch / 489 x 330 x 330 mm
  • Notes

  • This amplifier was likely one of Radford's early high-power models, possibly among the first they produced, although it cannot be confirmed as the very first due to the company's evolving product line over the years.

    Key Features

    • Power Output: 65 Watts at 5% distortion, 100 Watts peak
    • Frequency Response: 50-20,000 Hz, ±0.25 dB
    • Input Options: Electronic mixing of two inputs; grid circuit for gram or radio, and low impedance for microphones
    • Tone Control: Independent bass and treble controls

    Valve Configuration
    Total of 12 valves: 6J5, 6SL7, 6SN7, 6J5 (2), 6L6/KT66 (4), U18/20 (2), S130

    Physical Characteristics

    • Case: Grey wrinkle stove enamelled steel with handles
    • Weight: 80 lbs
    • Dimensions: 19.25" x 13" x 13"

    Price (1953)

    • £37/10/-
    • A 25-watt version is also available at £28/10/-

    This amplifier is suitable for applications requiring large audio frequency power.

  • Net weight (2.2 lb = 1 kg)
  • 80 lb (80 lb 0 oz) / 36.320 kg
  • Price in first year of sale
  • 37.50 GB £
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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