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Sansui QRX-7001

4-Channel Receiver (1974-77)

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Sansui QRX-7001

Description

The Sansui QRX-7001 incorporates a QS synthesizer circuit to reorganise conventional 2-channel stereo signals and create a 4-channel sound field.

The built in QS regular matrix system 4-channel decodes 4-channel records and tapes encoded with the regular matrix system such as the QS system, and their broadcasts, to reproduce them as a perfect 4-channel sound field.

The built in Phase Matrix circuit, featuring Sansui's own front-back logic, decodes records and tapes encoded with the SQ system to properly reproduce them in 4-channel stereo.

The new Sansui improved CD-4 demodulator makes it possible to reproduce CD-4 4-channel records, with increased inter-channel separation.

Specifications

Tuning range: FM, MW

Power output: 35W/ch into 8Ω (quadraphonic)

Frequency response: 15Hz to 30kHz

Total harmonic distortion: 0.4%

Damping factor: 10

Input sensitivity: 2.5mV (MM), 100mV (DIN), 100mV (line)

Signal to noise ratio: 70dB (MM), 80dB (line)

Channel separation: 50dB (MM), 50dB (line)

Output: 100mV (line), 30mV (DIN)

Speaker load impedance: 8Ω (minimum)

Dimensions: 540 x 161 x 403mm

Weight: 23.8kg

Downloads

instruction/owners manual   English - Pertrix

brochure   English - jsehm

Related Catalogues

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Comments

re: QRX-7001

Hi-

I have this receiver and it is in nice condition. When I got it I went to change a bulb and in doing so they all blew out. I opened the fuse cover and noticed 2 fuses were blown.

While changing one I didn't realize I had the unit plugged in at the time and my wrench made contact with something and caused a short.

I changed the fuses and the lights work fine now but the signal meter and the tuner meter doesn't respond and there is no sound coming out of the machine at all including static since that mistake.

Also, after 3-5 seconds the relay makes a clicking sound.

Any idea what I did, the fuses are all intact but nothing is happening now. A visual examination doesn't show any burnt wires or boards. It all looks clean and normal to me.

Any help is appreciated, thanks!

re: QRX-7001

Hi, my unit keeps blowing fuse on front channel so I cant get anything from if I play it only it still blows the fuse and blows with front and rear. Just speakers I can still play tape out/aux etc.

re: QRX-7001

Sounds like you have a dead short damaged amp section. The QRX-7001 is a great receiver with QS Type A decoding as we have rebuilt and upgraded lots of QRX-9001 and QRX-7001 units over the years. We also have a upgraded QRX-7001 for sale at this time, ChicagoAudio.net

re: QRX-7001

I have had a QRX-7001 since 1976 when I purchased it new while I was in the Army & stationed in Germany. I boxed it up about 15 years ago, and had not used it until my son in law recently expressed an interest in it. I took it out, and hooked it up, but even though it worked there were a few lights that no longer did, and some speaker conditions didn't seem to work either. I had it reconditioned to like new for less then I paid for it originally, and gave it to my son in law for Christmas. It sounds as good, and works like new. He is pleased to have it, and I am glad it has gone to someone who will appreciate it & care for it as I did. Next I will probably bless him with my four ESS AMT-5 speakers, but they need to be re-coned first.

maxicherokee's picture

re: QRX-7001

I had the qrx 5500 a few years ago, and loved the thing!

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