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How Home Theater and HDTV Work by Michael Troller, Michael Miller

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Chapter 21. How Audio Cables Work

How Audio Cables Work

Audio connections aren’t quite as complex as video connections because audio signals are easier to transmit than video signals—sort of. After all, for decades we only had to deal with two channels of audio: right and left. What could be simpler than that? (Well, monophonic audio, of course, but we haven’t had that since the 1950s....)

With the advent of surround sound, however, the audio situation became more complex. All of a sudden there developed the need to transmit six or more channels of audio. How to do it?

The simplest solution was to simply add four more RCA audio connections. And, in fact, that’s how early ...

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