Stereo Graphic Equalizer GR-777

Pioneer Corporation; Tokyo

Data
Forum
Pictures
Collections

  • Year
  • 1988–1996
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 215364

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Remote Control (with wire or wireless)
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220/240; 110/120-127/220/240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Graphic Equalizer GR-777 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 85.5 x 311.5 mm / 16.5 x 3.4 x 12.3 inch
  • Notes

  • An electronic 10 band stereo graphic equalizer with spectrum analyser housed in a metal case with an infrared remote control. The 10-band equalizer boosts and cuts up to 10dB at 10 frequency bands, channel by channel. The 10-band spectrum analyzer monitors the frequency makeup of music, channel by channel. With 5 programmable equalization patterns to create ones own equalized curves and store them in memory, and 5 resident equalization patterns, five equalized curves called HEAVY, CLEAR, SOFT, VISUAL and VOCAL, are stored in memory for instant recall. With RCA phono sockets for input/output to the Analyzer and Rec/Play for Tape, terminals for wired system control and an AC outlet.

    Specification  
    Graphic Equalizer Section  
    Number of bands 10 + 10
    Equalizer bands  
     Center frequencies 32Hz, 63Hz, 125Hz, 250Hz, 500Hz,
    1kHz, 2kHz, 4kHz, 8kHz, 16kHz
     Variable range ±10dB
    S/N ratio
    (IHF, A network, short circuit, 1V)
    S/N ratio (DIN 500mV)
    110dB
    90dB
    Harmonic distortion
    (20Hz—20kHz, output 1V))
    0.02%
    Frequency response 5Hz—70 kHz +0dB,-3dB
    Input (Sensitivity/Impedance) 150mV/50kΩ
    Output (Level/Impedance) 150mV/3.3kΩ
    Spectrum analyzer section  
    Number of bands 10 + 10
    Center frequencies 32Hz, 63Hz, 125Hz, 250Hz, 500Hz,
    1kHz, 2kHz, 4kHz, 8kHz, 16kHz
    Resolution 2dB step 13 point

    Versions/Power Requirements

    KUC USA, Canada 120V AC 60Hz
    HEZ W Germany 220, 240V AC 50/60Hz (Switchable)
    SD General 110, 120-127, 220, 240V AC 50/60Hz (With voltage selector)
    SD/G US Military 110, 120-127, 220, 240V AC 50/60Hz (With voltage selector)

    Power consumption:  18 watts

  • Net weight (2.2 lb = 1 kg)
  • 4 kg / 8 lb 13 oz (8.811 lb)
  • Source of data
  • - - Manufacturers Literature
  • Mentioned in
  • - - Manufacturers Literature (1988 Pioneer Hi-Fi Components catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (1995/96 Pioneer Audio Video Guide)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Operating Instructions Pioneer GR-777)
  • Literature/Schematics (3)
  • - - Manufacturers Literature (Pioneer Service manual GR-777 dated 1988)
  • Author
  • Model page created by João-Afonso Santos. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Stereo Graphic Equalizer is part of the collections of the following members.

 Forum