Delivers seven audio channels from a 7 channel source:
Four channels for speakers at the front-left (L), left-center (LC), right-center (RC), and right (R).
One channel for the center (C)
Two channel switchable surround that could feed one channel on the left and right walls and the other in the rear or could feed one channel on the left and one on the right.
Placement: The first five speakers should be placed across the wall on top of the screen or behind the screen. There should be three surround channels on the left, right, and rear walls. Switchable surround sound was done manually by a theater engineer based upon cue marks.
