Trio Stereo Tri Amplifier W-25

Kenwood, Trio-Kenwood Inc.; Komagane

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  • Year
  • 1962 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 350048
    • alternative name: Trio Corp.
    • Brand: Jennen

 Technical Specifications

  • Number of Tubes
  • 14
  • Number of Transistors
  • Main principle
  • Superheterodyne (common); ZF/IF 455/462 kHz
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC) / 50/60 Hz, 110; 117 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Trio Stereo Tri Amplifier W-25 - Kenwood, Trio-Kenwood Inc.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 17.5 x 5.333 x 12 inch / 445 x 135 x 305 mm
  • Notes

  • Stereo amplifier with twin AM tuners.

    Frequency Range: AM 535~1605 kHz x 2 and SW 3.7~11 MHz
    Frequency Response: ± 1 dB 20-30,00 kHz
    Pickup: Magnetic and Crystal
    Tone Control: 50 Hz + 12 dB; 10 kHz + 17 dB, - 14 dB
    Output: Max. 10 watts x 2; undistorted: 8 watts x 2
    Loudness Control: 50 Hz + 12 dB; 10 kHz + 11 dB, at 30 dB of volume control
    Equalizer: RIAA
    Residual Hum: 50 mV
    Special Circuitry: Hetro-Filter (more than 40 dB attenuation at 10 kHz)

    AM tuner 1 IF: 462 kHz
    AM tuner 2 IF: 455 kHz

    Two AM tuners were required for experimental stereo AM broadcasts transmitted from two AM stations in Australia in the 1960s. Different IF frequencies were used to prevent interference with each receiver.

  • Net weight (2.2 lb = 1 kg)
  • 24.2 lb (24 lb 3.2 oz) / 10.987 kg
  • Mentioned in
  • Radio Television & Hobbies, July 1962, Page 50.
  • Literature/Schematics (1)
  • -- Schematic
  • Author
  • Model page created by Martin Kent. See "Data change" for further contributors.

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