Mowrey
last dropped by here a few years ago (his first visit was in 2015, when he was the center of
an entire thread) but he hasn't posted since then, and hasn't logged in since May of this year. He speaks at length about the history and technical aspects of classical surround quad recording beginning at 32:38 of the "Original Source Series" video.
http://quadraphonic.info/Thomas_Mowrey/
I have no interest in vinyl, let alone stereo mixdowns of quad recordings on vinyl, so it's hard for me to get terribly excited by this series as they're promoting it. I love the story that Mowrey tells about attending an early demonstration of Peter Scheiber's matrix quad for European classical record execs. Afterwards Peter Berkowitz, who was unimpressed, said that DG wouldn't be signing on. "Why should we pay money to buy clouds and bring rain when what we need is sunshine?" he said. I don't see how these new records let us feel the sunshine, especially when it comes to the 50 or so multi-tracked quads that Mowrey produced. (He discusses those at around 59:00 of the video.) But if they also decide to reissue more of these titles in discrete form on SACD or Blu-Ray--especially if there are any that haven't
already been re-released, either on DG or on Pentatone--then I'll perk up.