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

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Chapter 12. How Audio Equipment Works

How Audio Equipment Works

The processing of the audio signals in a home theater system is just as important as the processing of the video signals. This audio processing is typically done by a single component, called an audio/video receiver. An A/V receiver combines the functions of three separate components—a preamplifier, power amplifier, and surround sound processor.

A/V receivers are available at a variety of price points, from under $200 to more than $6,000. While all A/V receivers perform similar functions, the price differential comes from varying control capabilities and sound quality. Consider the following variables:

  • Power

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