Pioneer QX-4000

Data

General

  • Manufacturer: Pioneer
  • Model: QX-4000

Type: Quadraphonic Receiver

  • Years of manufacture: 1972 - 1974
  • Made in: Japan
  • Color: Silver, Wooden Cabinet Walnut
  • Power consumption:
  • Dimensions: 450 x 144 x 350 mm
  • Weight: 10,1 Kg
  • Original price approx.: 68'000 Yen (Japan, 1972), corresponds to about 1'100 DM


Connections:

  • Number of inputs:
    • Phono MM: 2.3 mV, 50 kOhm.
    • AUX: 200 mV, 90 kOhm

Tape Play: 200 mV, 90 kOhm Coaxial FM antenna connection (75 Ohm)

    • AM antenna connection (300 Ohm)
  • Number of outputs:
    • Tape Rec: 200 mV

Tape Rec DIN: 35 mV Speaker pairs: 2 x front, 1 x rear

    • Headphone output: 6,3 mm jack each


Technical Data:

Amplifier:

  • continuous power: quadrophonic, 20 Hz - 20 kHz
    • 8 Ohm: 4 x 10 Watt

4 Ohm: 4 x 11 Watt

  • music power: quadrophonic, 20 Hz - 20 kHz
    • 8 Ohm:
    • 4 Ohm:
  • Total harmonic distortion: < 1 % at rated power
  • Attenuation factor: 35 at 8 ohms, 1 kHz
  • Frequency response: 10 - 100'000 Hz ± 3 dB
  • Signal-to-noise ratio:
    • Phono: > 70 dB
    • Line: > 90 dB
  • Tone control:
    • Bass: + 13 dB, - 12.5 dB at 100 Hz
    • Treble: + 11.5 dB, - 8.5 dB at 10 kHz
  • Loudness: + 10 dB at 100 Hz, + 5 dB at 10 kHz
  • Low Filter (Subsonic):
  • High Filter:


Tuner:

  • Reception: FM, AM
  • Frequencies:
    • FM: 87.5 - 108 MHz
    • MW: 525 - 1605 kHz
  • Input sensitivity:
    • FM: 2.2 µV
    • MW: 15 µV
  • Frequency response: 20 - 15'000 Hz
  • Distortion factor FM: Stereo < 0.8 %, < Mono 0,6 %
  • Signalrauschabstand:
    • UKW: 65 dB
    • AM: 50 dB
  • Stereo-Kanaltrennung: >40 dB at 1 kHz
  • Selectivity:
    • FM: 60 dB

MW: > 25 dB

  • Co-wave selection: 3.0 dB
  • Spurious wave selection: > 80 dB
  • Image frequency attenuation:
    • FM: > 50 dB

MW: > 45 dB IF attenuation:

    • FM: > 85 dB
    • MW: > 30 dB
  • AM suppression: 50 dB


Special Features

  • Quadro Matrix SQ
  • Quadro Discrete
  • FM Muting
  • Bass / Tweeter control V + H separately


Comments



Pictures

  • Image: Pioneer QX-4000

Pioneer QX-4000-1.jpg


Reviews

Links

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