Sansui QRX-7001/701

Data

General

• Manufacturer: Sansui
• Model: QRX-7001/701 (design variant QRX-777 with black applications)

Type: Quadrophonic Receiver

• Years of manufacture: 1974 - 1977
• Manufactured in: Japan
• Color: Front aluminum brushed, wood housing sides white, top wood
• Remote control: no
• Power consumption: 530 W max.
• Dimensions: 540 x 161 x 403 mm (WxHxD)
• Weight: 23,8 kg
• Original price approx.: 3'950 DM

Connections

• Number of inputs:
  • Phono 1, 2: 2.5 mV, 50 kOhm, max. 330 mV
  • Aux 2-channel: 150 mV, 50 kOhm
  • Aux 4-channel: 150 mV, 50 kOhm
  • Tape Play 1, 2, 2-channel: 150 mV, 50 kOhm
  • Tape Play DIN, 2-channel: 150 mV, 50 kOhm
  • Tape Play 1, 2, 4-channel: 150 mV, 50 kOhm
  • Tape Play DIN, 4-channel: 150 mV, 50 kOhm
  • Discrete 4-channel: 150 mV, 50 kOhm
  • Main In:
  • Antenna (FM: 75, 300 Ohm, AM)
  • Microphone (6.3mm jack).
• Number of outputs:
  • Tape Rec 1, 2: 100 mV

Tape Rec DIN: 30 mV

• • Dolby NR Adapter:
  • Pre Out: 1 V
  • Headphones (6,3mm jack): 1x front, 1x rear
  • 3 speaker pairs front
  • 2 speaker pairs in the back

Technical Data

Amplifier

• Continuous power (at distortion):
  • 8 Ohm: 4x 35 W (RMS, 20 Hz - 20 kHz, 0.4 %).
  • 4 ohms:
• Dynamic power:
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: < 0.04 %
• Attenuation factor: 10 at 8 Ohm
• Frequency response:
  • phono: 30 Hz - 15 kHz, ± 1 dB

High level: 15 Hz - 30 kHz, ± 1 dB

• Signal-to-noise ratio:
  • Phono: 70 dB
  • High level: 80 dB
• Tone control:
  • Bass: ± 10 dB at 50 Hz

Treble: ± 10 dB at 10 kHz

• Loudness: + 8 dB at 50 Hz, + 3 dB at 10 kHz
• Treble filter: - 10 dB at 10 kHz, 6 dB / octave
• Subsonic: - 10 dB at 50 Hz, 6 dB / octave
• Mute: yes, - 20 db
• Direct/Line-Straight: yes (Tone off)

Tuner

• Reception: FM, MW
• Frequencies:
  • FM: 88 - 108 MHz
  • MW: 530 - 1,605 kHz
• Input sensitivity:
  • FM: 1.8µV
  • MW: 15µV
• Frequency response: 30 - 15,000 Hz (+0.3 dB, -1 dB)
• Distortion factor:
  • FM, 1 kHz: < 0.06% (mono), < 0,08 % (Stereo)
• Signalrauschabstand:
  • UKW: 72 dB (Mono), 67 dB (Stereo)
  • MW: 55 dB
• Kanaltrennung: 50 dB (1kHz)
• Trennschärfe: 80 dB
• Gleichwellenselektion: 1,0 dB
• Nebenwellenselektion:
  • UKW: 80 dB
  • MW: 35 dB
• Spiegelfrequenzdämpfung:
  • UKW: 85 dB
  • MW: 65 dB
• ZF-Dämpfung:
  • UKW: 100 dB
  • MW: 85 dB
• AM-Unterdrückung: 55 dB

CD-4 Demodulator-Teil:

• Eingangsempfindlichkeit: 2,5 mV
• Eingangsimpedanz: 100 kOhm
• Klirrfaktor: 0,07 %
• Signalrauschabstand: >70 dB
• Channel separation at 1 kHz:
  • Left to right: 40 dB
  • Front to rear: 25 dB
• Frequency range: 30 - 15'000 Hz

Special Features

• Switch for 4-channel RM, SQ, Discrete / Stereo / Mono
• CD-4 built-in
• Bass and treble control separately for front / rear

Remarks

• Other models in the same series:
• Sansui QRX-3000
• Sansui QRX-3500
• Sansui QRX-5001/501
• Sansui QRX-5500
• Sansui QRX-6001/601
• Sansui QRX-6500
• Sansui QRX-7001/701
• Sansui QRX-7500
• Sansui QRX-8001/801
• Sansui QRX-9001/901

Pictures

• Extract from brochure: Sansui QRX-7001

• Picture: Design variant Sansui QRX-777 with black applications

Reviews

• Good Old Hifi review: [1]

• Report at "Hifi Museum" [=quadro]

Links

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