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CBS's formuation for their SQ pressings...

Put no extra requirements on the vinyl whatsoever since SQ was an out of phase recording technique. CD-4 was an entirely different animal. It didn't work very well, but when it did work it was capable of much better seperation than any of the quad matrix techniques (SQ, QS, ABC Command Quad and any of the others that I may have left out).

I'm trying to find the patent filing for Q-540 vinyl. That will tell the story of their approach.

Ed
Life is analog...digital is just samples thereof


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  • CBS's formuation for their SQ pressings... - EdAInWestOC 17:26:43 06/27/12 (0)

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