Here are series of articles devoted to surround sound and mixing in surround
When you listen to surround sound you'll notice quite a few improvements over stereo:
• The sonic clarity is enhanced because the center channel anchors the sound and eliminates any phantom image shifts that we take for granted in stereo.
• There is no sweet spot per se. — Actually, the whole room becomes a sweet spot in that you can move around freely and never loose the sense of clarity, dimension and spatial continuity. One listener described it perfectly as an "audio sculpture" in that, just like
A BIT OF HISTORY
Surround sound is almost universally acclaimed to be a more realistic and pleasing experience to the listener than stereo. This applies to just about any type of program, from music to motion pictures to television. People that can't tell the difference between mono and stereo can immediately hear and appreciate the difference between surround and stereo. It is a development so dramatic that it will change the way we listen, record, mix and enjoy music forever.