A 6.1 system is as follows:
  1. Two main speakers to the left and right of the screen
  2. One center channel either above or below the screen
  3. Two surround channels to the left and right of your sitting position, mounted on the side walls about 6-7 feet above the floor and slightly behind your listening position.
  4. One rear surround channel mounted behind you at the same height as the side surrounds. (A 7.1 system uses a pair of rear surrounds.)
  5. One subwoofer placed anywhere you want it.