Alan Lofft suggests
"How to Create a Seamless Soundstage
Got a problem getting a smooth, seamless soundstage from your left main speaker across the centre channel to the right speaker? Does much of the image seem collapsed into the centre? First, carefully adjust the centre-speaker distance and level in your receiver's setup menu. Many enthusiasts run the centre too loud. Adjust the centre level loud enough so dialogue intelligibility doesn't suffer, but no louder. Try placing your main speakers so their front panels are even with the centre channel, with the centre channel further back, if possible (wall-mounting it behind the TV is another alternative). If the three main channels form a gentle arc facing your couch, with the centre speaker the furthest away, you should experience a significant improvement in the forward soundstage. "
I've wall mounted my centre channel just above the wall mounted screen using the
FMB and pointed the channel down towards the listenning position.
FYI the quote above is from one of the many informative pieces Alan has produced for the Axiom newsletter (see link at the top-right of the page).
Paul