^^^
I wish all of the record companies had done what RCA (initially) did:
if an album was recorded in quad, only a (CD-4 in this case) quad
disc would be released (stereo tapes would be the quad folddown).
RCA relentlessly promoted color tv (on the NBC TV network), even
10 years after color tv was FCC approved, only about 3% of viewers
had color tvs, ~3 years after the introduction of quad, it had 5% of
the market (hardware and software):
http://www.pspatialaudio.com/CD-4 wear.htm^^^
Note 4
Producing a tv show in color rather than b&w cost a lot more than
recording an album in quad rather than stereo, too bad the record
companies didn't absorb the costs of quad early on in order to
launch quad (with the payoff once quad was the norm).
Kirk Bayne