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