Pioneer QX-8000

Data

General

• Manufacturer: Pioneer
• Model: QX-8000

Type: Quadraphonic Receiver

• Years of manufacture: 1971 - 1972
• Made in: Japan
• Color: silver, wooden case walnut
• Power consumption: 330 watts max.
• Dimensions: 509 x 172 x 377 mm
• Weight: 15,6 Kg
• Original price approx.: 500 US-$, 2'000 DM

Connections:

• Number of inputs:
  • Phono 1: 2 mV, 50 kOhm
  • Phono 2: 2 mV, 50 kOhm
  • AUX 1, 2: 170 mV, 110 kOhm
  • Tape Play 1, 2: 180 mV, 120 kOhm

Main In:

• • Coaxial FM antenna connection (75 Ohm)
  • AM- Antenna Connector (300 Ohm).
• Number of outputs:
  • Tape Rec 1, 2:
  • Pre Out
  • 2 x speaker pairs: 1 x front, 1 x rear
  • 2 x headphone output front + rear: 6.3 mm jack each

Technical Data:

Amplifier:

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

4 Ohm: 4 x 25 Watt

• music power: quadrophonic, 20-20 kHz
  • 8 Ohm: 130 Watt
  • 4 Ohm: 180 Watt
• Total harmonic distortion: < 1 % at rated power
• Attenuation factor: 35 at 8 ohms, 1 kHz
• Frequency response: 5 - 100'000 Hz ± 3 dB
• Signal-to-noise ratio:
  • Phono: > 75 dB
  • Line: > 90 dB
• Tone control:
  • Bass: + 11 dB, - 12 dB at 100 Hz
  • Treble: + 10.5 dB, - 8.5 dB at 10 kHz
• Loudness: + 11.5 dB at 100 Hz, + 7 dB at 10 kHz
• Low Filter (Subsonic): - 6.5 dB at 50 Hz (6 dB / octave)
• High Filter: - 11.5 dB at 10 kHz (6 dB / octave)

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: 60 dB
  • AM: 50 dB
• Stereo-Kanaltrennung: >38 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

• Quadralizer
• MPX Noise Filter
• FM Muting
• Bass / Tweeter control V + H separately

Remarks

• All Pioneer Quadro Receivers at a glance:
  • Pioneer QX-646
  • Pioneer QX-747
  • Pioneer QX-747 A
  • Pioneer QX-949
  • Pioneer QX-949 A
  • Pioneer QX-4000
  • Pioneer QX-8000
  • Pioneer QX-8000 A
  • Pioneer QX-9900

• Introduction Kenwood 4-channel playback technology

Pictures

• Extract from brochure: Pioneer QX-8000

Reports

• Review of the Pioneer QX-8000 by "Hifi Studio": [[1]]

Links

• External link Pioneer brochure on "Hifi Archive": [[2]]</Mono>