I mentioned that I have a quadrophonic stereo system that I've built over the years. Here is the paper insert from a quad album that explains about quad and features receivers that used their SQ playback system. I think it's pretty interesting...
You can click on it and zoom in to read it. It's interesting that the record company felt that people needed this information to understand the idea of quadrophonic sound. Now, of course we have surround sound, which uses 5 channels, plus a sub woofer. And that's just on our TVs! But in the late 60s to early 70s it was a really revolutionary idea. Heck, stereo (two channel) had only been around a few years at that point!
Unfortunately, quad would fail as a consumer stereo option. The different systems (QS, SQ, CD-4) were confusing and most systems could only decode one (although my Sansui receiver does all of them, it was very unusual). The systems were expensive, and the idea of surround sound was years away.
Still, it's fun to mess with, and this humble sleave is a nice view into a time when consumers were offered an item that was poorly thought out, and they didn't want anyway!
Yay!!!
Until next time, keep searching for treasure!
