Since I cited Ed Michel so many times in my previous posts, today it occurred to me that I should see what information the Web might reveal about him. My Google search found his own Web site at
www.edmicheljazzproducer.com/.
At that site Mr. Michel provides a list of the recordings he has produced. He thoughtfully identifies those he mixed for quadraphonic playback. The list includes several I did not know about:
Dave Brubeck Quartet/25th Anniversary Reunion, Horizon SP-715
Dave Brubeck and Paul Desmond/1975: The Duets, Horizon SP-703
Ornette Coleman/Dancing in Your Head, Horizon SP-721
John Coltrane/The Africa Brass Sessions, Vol.2, Impulse AS-9273
John Coltrane/Live in Seattle, Impulse AS-9202-2
Sonny Fortune/Awakening, Horizon SP-704
Sonny Fortune/Waves Of Dreams, Horizon SP-712
Ahmad Jamal/Outertimeinnerspace, Impulse AS-9226
Thad Jones/Mel Lewis Orchestra/Suite for Pops, Horizon SP-701
The list includes the Alice Coltrane/Infinity LP on Warner Brothers that I mentioned in my previous post, so that adds to the evidence that it is QS-encoded. It also indicates that the John Coltrane LP "The Africa Brass Sessions, Vol.2" that I identified as stereo is actually quad. My copy contains no notice that it is quad, but neither does the Alice Coltrane LP.
There are other differences in his information and mine. For example, the jacket of my copy of Sun Ra/Pathways to Unknown Worlds (Impulse ASD-9298 ) identifies it as "Compatible Stereo/Quadraphonic", but Mr. Michel's list does not.
Regardless, Mr. Michel has clearly taken pains to keep track of the recordings he has produced and especially which he mixed for quadraphonic playback. That nails it for me that the Impulse quad LPs are genuine surround sound recordings.
Incidentally, the list identifies the CD releases of a number of the recordings. I would not assume that these are quad, too.
Larry