I have a pair of SMGc's in the corner of a small (11x15 feet) room. The left speaker tweeter (tweeters on the outside) is about 4 inches from the sidewall, the right is maybe 2 feet from the opposite wall. I have acoustic wedge foam along the sidewalls to limit high frequency reflections and absorb some of the back wave. I think the sound is pretty good considering the room size and corner placement. I am also using digital equalization to counteract the small room frequency response (Behringer DEQ2496).