Stereo Preamplifier SPEC-3

Pioneer Corporation; Tokyo

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  • Year
  • 1978
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 313810

 Technical Specifications

  • Number of Transistors
  • 29
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Preamplifier SPEC-3 - Pioneer Corporation; Tokyo
  • Shape
  • Rack
  • Dimensions (WHD)
  • 480 x 142 x 390 mm / 18.9 x 5.6 x 15.4 inch
  • Notes

  • A stereo hi-fi pre-amplifier with RCA inputs for Phono 1, Phono 2, Tuner, Aux 1 and Aux2, input/outputs for Tape 1 (RCA) and Tape 2 (RCA or DIN), and 2 RCA power amplifier outputs. Bass and Treble controls, switches for tone defeat, subsonic filter, cartridge loads, muting, tape copying and monitoring.

    Specification
    Semiconductors :   Transistors 29, Diodes 10
    Equalizer amplifier 3-stage direct-coupled class A SEPP with 1st-stage                                                       differential amplifier
    Control amplifier    3-stage direct-coupled with 1st-stage differential amplifier
    Input (Sensitivity/Impedance)
      PHONO 1           2.5mV/100Ω, 10, 50, 100kΩ
      PHONO 2           2.5mV/100Ω, 10, 50, 100kΩ
      Cartridge Load PHONO 1, 2 100pF, 200pF, 300pF, 400pF
      TUNER              150mV/50kΩ
      AUX 1                150mV/50kΩ
      AUX 2                150mV/50kΩ
      TAPE PLAY 1     150mV/50kΩ
      TAPE PLAY 2     150mV/50kΩ
      TAPE PLAY 2 (DIN) 150mV/50kΩ
    Output (Level/Impedance)
      TAPE REC 1      150mV
      TAPE REC 2      150mV
      TAPE REC 2 (DIN)  30mV/80kΩ
      OUTPUT 1, 2 (RL: 50kΩ)          
                               2V/600Ω
                               8V/600Ω (max.)
    Total Harmonic Distortion (20Hz to 20kHz)
      PHONO             No more than 0.01% (2V output)
      TUNER, AUX, TAPE PLAY No more than 0.005% (2V output)
    Frequency Response
      PHONO (RIA A Equalization)  20Hz to 20kHz ±0.2dB
      TUNER, AUX, TAPE PLAY     10Hz to 100kHz +0dB,-0.5dB
    Hum and Noise (IHF, short-circuited, A Network)
      PHONO                 80dB
      TUNER, AUX, TAPE PLAY 100dB
    Hum and Noise (DIN)
      PHONO                 69dB
      TUNER, AUX, TAPE PLAY 86dB
      MUTING               -20dB

    Power Requirements
    220/240V AC 50/60Hz switchable
    Power consumption 15 watts

    Same as the Pioneer C-73 Stereo Preamplifier (USA market).

  • Net weight (2.2 lb = 1 kg)
  • 7.7 kg / 16 lb 15.4 oz (16.96 lb)
  • Mentioned in
  • -- Original prospect or advert (Pioneer Hi-Fi Stereo 1978/79 Catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Stereo Preamplifier SPEC-3 Service Manual)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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