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Vintage Sansui QRX-7001 Quad Receiver 1974 sounds Great - $325 (Mountain home)
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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)