It's also important to note that AV preamp/processors provide outputs that can be connected to a powered subwoofer. In a home ...

While working on his undergrad at Michigan State, [Gregory] thought it would be a great idea to build an all-tube home theater system. He calls his seven-foot tall rack of amplifiers ...

an AV receiver is the beating heart of a home theater system. You’ll be hard-pressed to wire up any bookshelf speakers, floor-standing speakers, or subwoofers without one of these bad boys!

Audio playback in a home theater uses multiple speakers to provide a more realistic audio environment. The audio quality in a home theater is just as important, if not more so, than the video.