This is the only thing I could find about Hendrix Quad. Here is the link:
www.geocities.com/quadaud...adBob.html
and here is the text from QuadBob:
So, though not set in concrete.........we do know that "Dynaquad" or connecting speakers "out of phase" predated any of the other quad lp formats. Whether the SPV-7 was the "first" lp to promote this I can't be sure.....but it is the earliest in my library of over 2,500 quad lps produced in the early days of quadraphonic sound. But, if you REALLY want to jump to the earliest modern matrix technology my vote would be for Jimi Hendrix on Electric Ladyland!!!!!<G> This album run through a quadraphonic decoder is extremely discrete and an awesome listening experience. I was never a big Hendrix fan, but after reading the booklet with the MCA re-release CD which included quotes from Jimi in 1968 maybe you can understand why:
"I don't know, for what we was tryin' to get across at the time, it was perfect. You can get 16 tracks in the States, but who needs 16? You need only 4 really. It depends what kind of music you go into."
"All I did was just be there and make sure the right songs were there, and the SOUND was there, we wanted a particular sound. It got lost in the cutting room, because we went on tour right before we finished and actually cut it. We were unable to spend time on it. The engineers re-taped the whole original tape before they pressed the record for Britain and so much was lost. Some of the mix came out kind of muddy, not exactly muddy, but kind of bassey. I think it's cloudy, the sound of it, because we didn't get a chance to do it complete. We mixed it and produced it and then when it was time for them to press it they screwed up because they didn't know what we wanted. There's three-D sound on there that you can't even appreciate
now because they didn't cut it properly. They thought it was out of phase."
Jimi even had the box of master-reels scrawled on with the warning "special phase effects on this tape. DO NOT change phase!"
Now.........that is genius at work!!!!!!!! And, to think Jimi never even got to hear it through one of our high-end quad decoders/synthesizers. It was common practice for studio engineers to remove "out of phase" material from recordings because they thought it muddied up the recording..........Now here was Jimi Hendrix purposefully recording out of
phase.................and quad wasn't even being whispered about then!!