Music For Four Ears And Other Sound Ideas

Music for Four Ears and Other Sound IdeasA Year ago, quadraphonic sound was little more than a gleam in an audio engineer's eye. Granted there were a few units on the market--primarily four-channel amplifiers and a few reel-to-reel tape recorders--but there was virtually no material to play on them, so few stores even bothered to demonstrate the systems. True, a form of four-channel record had been developed in Japan, and in the U. S. some experimental FM broadcasts had been done in four-channel...