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7.1 channel sound

Does home theater need more than 5.1 channels?

Multichannel movie sound dates back to Disney's "Fantasia." When the film was first released in 1940, the number of speakers used was scaled to the size of the individual theater; 30 to 80 speakers were installed behind the screen and around the perimeter of the ceiling.

Home theater multichannel sound arrived many decades later, and quickly settled on a 5.1 channel system, which is just a scaled-down version of the current movie theater system. The home system uses three front speakers--left, center, right--and two surround speakers placed on the sides of the room. The subwoofer supplies … Read more

Poll: Is 7.1 channel home theater a bust?

I'm a big proponent of stereo home theater, but I'd quickly concede that most home theater buyers are looking for multichannel systems. Of all the available multichannel options--11.1, 9.1, 7.1, 6.1, and 5.1 --that last one is the most popular, but that hasn't stopped most manufacturers from only offering 7.1-channel models. Budget-priced models are the only 5.1 receivers you can buy.

And in 2009, Dolby Pro-Logic IIz, which featured two additional "height" channels, bumped the total for some receivers to 9.1 channels, even though our listening tests here at CNET … Read more