I'm replacing an older Hitachi 55" rear-projection HDTV with a new Sharp 70" LC-70LE735U LCD flat panel TV. Currently I have a Martin-Logan Logos center channel speaker on top of the Hitachi, but obviously I can't do that with a flat panel TV. My question is whether I would have to wall-mount the Logos above the new flat panel (which I really would prefer not to do), or whether it could be placed underneath the flat panel in, say, a cabinet on which the flat panel will be standing. How would this affect acoustics?