While you don't mention it, my guess is that you are looking to place the speakers below the screen because there is no space above? If you have the choice you may want to consider placing them above - from where there is usually a "cleaner" line-of-sight to the listener. I've suspended my centre channel speakers, on a custom-built frame, from the ceiling, above my HDTV, and angled down towards the listening positions. They sound great that way.

Regards.

Jeff Mackwood