I'm ready to install a 50" plasma HDTV with Polk in-wall left, right, and center channel speakers; plasma will hang on the wall (as opposed to being on a stand), so I'm looking for a real clean look; speaker cables and power cord are hidden in wall too. Height of plasma will be at eye level when sitting on a couch (~ 28" from floor to bottom of plasma). The left and right in-wall speakers will be located slightly below the ht of the bottom of the plasma.
My question is whether the in-wall center channel should be installed above or below the plasma? Also is your answer based on sound quality, aesthetics or both? Thanks much!