Super Seven 7524D

Ferrograph, British Ferrograph Recorder (Wright & Weaire); London

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  • Year
  • 1970 ??
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 332070

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Tape Recorder
  • Power type and voltage
  • Alternating Current supply (AC) / 200-250 Volt
  • Loudspeaker
  • 2 Loudspeakers
  • Power out
  • 20 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Super Seven 7524D - Ferrograph, British Ferrograph
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Dimensions (WHD)
  • 515 x 445 x 255 mm / 20.3 x 17.5 x 10 inch
  • Notes

  • A 3 speed stereo reel to reel transistor tape recorder with a 2 x 10 watt amplifier. Three heads (1 playback, 1 record, 1 erase), max spool diameter 10½ inch (27cm), 2-track, 2-channel, stereo/mono, Dolby B, two 7 x 4 inch elliptical loudspeakers.

    Speeds: 7½, 3¾, 1⅞ ips (19, 9½, 4¾ cps)
    Frequency Response:(3dB): 7½ips: 30Hz-17kHz, 3¾ips: 40Hz-14kHz, 1⅞ips: 50Hz-7kHz
    Wow and Flutter: <0.08% at 7½ips, <0.15% at 3¾ips, <0.20% at 1⅞ips
    Inputs: microphone: 300µV–15mV at 10kΩ, line: 50mV–10V at 2MΩ
    Outputs: line: 300mV into 10kΩ, stereo phones: 2V into 600Ω (8–600Ω).

  • Net weight (2.2 lb = 1 kg)
  • 25 kg / 55 lb 1.1 oz (55.066 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Ferrograph Series 75 Super Seven catalogue)
  • Author
  • Model page created by Keith Ellison. See "Data change" for further contributors.

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