Stereo Cassette Tape Deck DR-F7

Denon (Marke / brand)

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  • Year
  • 1982
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 152013

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Cassette-Recorder or -Player; Radio Control (+Remote Wire etc)
  • Power type and voltage
  • Alternating Current supply (AC) / 100 or 120 or 220 or 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Cassette Tape Deck DR-F7 - Denon Marke / brand
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 434 x 117 x 320 mm / 17.1 x 4.6 x 12.6 inch
  • Notes

  • Front loading 3-Head 4-track 2-channel hi-fi stereo cassette tape deck with Metal Tape Capability, Dolby B + C, Double Dolby NR Circuits, MPX Filter, microprocessor controlled FTS tuning system. 3-Digit Mechanical Counter, Analog VU meters, Peak Indicator. Auto Shutoff. Line in/Line out RCA sockets. 2 Jacks for microphone and a headphone jack. Wired Remote Control.

    Specification
    Heads                                   Recording/Playback combination head (hard permalloy)
                                                 Erase head (Ferrite)
    Motors                                  Flat-Twin direct drive motor (for capstan)
                                                 DC motor (for reel winding)
    Tape speed                           4.8 cm/sec.
    Fast forward, rewind time      Approx. 90 sec. with a C-60 cassette tape
    Recording Bias                     Approx. 105 KHz
    Overall S/N ratio                   Dolby B ON  more than 67 dB (CCIR/ARM)
      (at 3% THD level)               Dolby C ON  more than 73 dB (CCIR/ARM)
    Overall frequency response 25-21,000 Hz ± 3 dB (at —20 dB METAL tape)
                                                 30-20,000 Hz ± 3 dB (at —20 dB Cr02 tape)
                                                 30-19,000 Hz ± 3 dB (at —20 dB LH tape)
    Frequency range                  20-22,000 Hz (at —20 dB METAL tape)
                                                 20-21,000 Hz (at —20 dB Cr02 tape)
                                                 20-20,000 Hz (at —20 dB LH tape)
    Channel separation              More than 40 dB (at 1 KHz)
    Crosstalk                              More than 65 dB (at 1 KHz)
    Wow & flutter                        Less than 0.027% w.rms

  • Net weight (2.2 lb = 1 kg)
  • 7.5 kg / 16 lb 8.3 oz (16.52 lb)
  • Source of data
  • -- Collector info (Sammler)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service Manual model DR-F6/F7/F8)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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