Sony SQR-8750

1 9 7 4 1974
1 9 7 6 1976

Sony's biggest SQ-compatible receiver, the topper that, like all other QUAD units (toppers or not) didn't make it in the end.

Sony's smaller Quad units sold better. The public was suspicious, and rightly so : hell, why all that fiddling ?

SQ, QS compatibility, R-Matrix, Discrete, 2 more speakers to tinker with, cables all over the place and what happens to Frank Sinatra when he's spread over the four corners of my living-room ?

The contemporary images showing how multi-channel was to be enjoyed invariably displayed someone, alone, surrounded at a close range by four loudspeakers. The key word is alone - not a 1970s concept.

The public completely dropped the multichannel drudgery until the mid 1980s.

However, if Triphony never gained the popularity of Stereophony, Multichannel-phoney nowadays seems resolutely en route for a major take-over.

Sony SQR-8750, image 1 Sony SQR-8750, image 2 Sony SQR-8750, image 3
Sony SQR-8750 specifications
Title Value
Sensitivity : 1,9µV (IHF)
S/N ratio : 70dB
Capture ratio : 1,2dB
Selectivity : 75dB (IHF)
Image rejection : 70dB
IF rejection : 100dB
Spurious rejection : 90dB
AM suppression : 54dB
THD : 0,2% (400Hz, mono)
0,5% (400Hz, stereo)
FM separation : 40dB (400Hz)
FM frequency response : 40Hz...15Khz (+0,5 / -1dB)
AM THD : 0,5%
AM S/N ratio : 50dB
Inputs : Phono (5mV / 50kOhm)
Phono low (2,5mV / 50kOhm)
Microphone (1,5mV / 50kOhm)
Tuner, Aux, Tape, DIN (250mV / 50kOhm)
Outputs : rec-out (250mV / 10kOhm)
DIN (30mV / 82kOhm)
S/N ratio : 72dB (phono)
65dB (MIC)
90dB (line)
High filter : 8Khz (6dB/oct.)
Low filter : 80Hz (6dB/oct.)
Bass control : ± 10dB at 100Hz
Treble control : ± 10dB at 10Khz
Loudness switch : + 10dB at 50Hz / + 4dB at 10Khz (att. -30dB)
SQ Section SQ Section
THD : 0,2% (250mV input ; 2Khz)
Frequency response : 20Hz...20Khz (±3dB)
S/N ratio : 80dB (250mV input, IHF-A)
RMS power : 2x 80W (2 channels driven, 20Hz...20Khz, 8 Ohm)
4x 30W (4 channels driven, 20Hz...20Khz, 8 Ohm)
2x 280W (2 channel, peak, 4 Ohm)
2x 216W (2 channel, peak, 8 Ohm)
THD : 0,5% at rated power (2 channel)
0,2% at rated power (4 channel)
IM : 0,5% at rated power (2 channel)
0,2% at rated power (4 channel)
Bandwidth : 15Hz...40Khz (IHF)
Frequency response : 10Hz...50Khz (1W output, +0/-2dB)
S/N ratio : ??
Damping factor : 25 (8 Ohm)
Dimensions : 52 x 18,9 x 37cm
Weight : 18,3kg.
List price : ??
Optional accessory : RU-40 4CH wired remote-control
Full-logic decoding of SQ sources
Decoding of other 4-Channel matrix systems
Enhancement of existing stereo programs
Phase-Locked Loop IC for FM decoding
MOS-FET FM front end
Solid State IF filters
IC IF stage
Completely shielded FM front end
Pinpoint tune signal strength/multipath meter
DC power amp system
Provisions for 2 phono sources
Provisions for 3 tape recorders (2x 2CH and 1x 4CH)
Outputs for 2 sets of 4CH speakers
4 VU meters and meter sensitivity switch
Individual level controls for each channel
Master level control
Separate Bass & Treble controls for front & rear channels
Microphone mixing control
Loudness compensation
Low & High filters
FM interstation muting
Headphone jacks for 2 and 4CH use
Wooden cabinet included
Sony SQR-8750 : 0 topic
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page online since : november 2004
page updated : june 2010
page type : LGT / KNB
page weight : 616.62 Kb / 382.05 Kb

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