I have my computer on a large surface, on the front wall, about in the middle. I have two sets of Promedia's for a 8.2 setup. I have the first front pair on the wall in front of me, about two feet down from the ceiling, spaced about three feet apart. I have the second set of front sats, wall mounted about a foot and a half down from the ceiling in the front corners of the room. The first set of rears are wall mounted on the right and left walls behind me, at about the midpoint of the room. The last pair of rears are in the rear corners of the room behind me, also wall mounted. The two subs are in the front corners of the room with the port hole facing the corner. Sounds very nice...