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Quadraphonic records (LPs to you and me)

If normal analogue comes through as 2 channel, what effect does a quadraphonic record have?
If my processor (Bryston sp3) codes 2 channel into surround 7.1 - which it does exceedingly well- does that make the separation easier?
(Bryston do not know)
Thanks chaps and chapesses
tatyana69
cleeds
2,065 posts
 
chakster
Quadraphonic Records (Descrete-4 or CD-4) require special cartridge and special processor, also 4 speakers
CD-4 was only one of the quad LP formats, although I think it may have been the only discrete format for LP.  SQ and QS were competing formats to put quadraphonic audio on LP.
tatyana69 OP
113 posts
 
The Bryston very successfully codes 2 channel into 7.1.
I never play analogue into stereo 
So the quadraphonic lps need a special cartridge ... and phonostage then. So presumably playing with a normal cartridge and phonostage some channels are missing, hence maybe a weaker sound for a number of reasons, presumably, from what you are saying?
Must be for a very limited market place these records then


tatyana69 OP
113 posts
 
I am looking at Ebay uk an item called
CARLY SIMON ~ HOTCAKES ~ USA QUADRAPHONIC STEREO AUDIOPHILE LP
So the "stereo" word is out of place, or indeed wrong?
cleeds
2,065 posts
 
tatyana69
So the quadraphonic lps need a special cartridge ... and phonostage then. So presumably playing with a normal cartridge and phonostage some channels are missing, hence maybe a weaker sound for a number of reasons, presumably, from what you are saying?
No, all of the quad LP formats were compatible with two channel playback, at least as far as I can recall.

I am looking at Ebay uk an item called
CARLY SIMON ~ HOTCAKES ~ USA QUADRAPHONIC STEREO AUDIOPHILE LP
So the "stereo" word is out of place, or indeed wrong?
No, it's not wrong at all. Quadraphonic is a type of "stereo," just as two channel is a type of stereo. "Stereo" is not confined to two channels.
tatyana69 OP
113 posts
 
So is any quad beneficial element picked up in a normal cartridge and phonostage, or just "wasted"?
From what you are saying all elements are in principle "recovered"?
I feel I am either being stupid or missing something here
If the Bryston decodes elements into separate aspects to surround speakers I was wondering if the input already into 4 may provide an easier or more varied decoding

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