From Alan's 'Essential Guide to Home Theatre Layout' article...
'As you are reviewing the diagrams, remember that the goal of all speaker placement for movie soundtrack playback and multichannel music reproduction—even stereo -- is a smooth, consistent and unbroken soundstage across the front, coupled with a sense of envelopment in the ambient surround effects. In other words, you're after a sense of location, whether that is suggested by what's on-screen, by the recording venue or even the dry, intimate acoustic of many pop/rock studio recordings.
As you experiment with speaker locations, think back on a really great Dolby Digital movie presentation in a big cinema when you had a good seat in the central part of the auditorium. You are not constantly looking up at the surround speakers on the side walls or at the back of the theater. The same applies to a home installation. You don't want to “hear” the location of specific surround speakers or, for that matter, your main left and right front speakers. Involvement in the movie or music (whether multichannel or not), is everything . That is the goal.
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