Center Channel Placement Issue. Need Help

I am looking at purchasing an HDTV ready rear projection set. However the top where the center channel would rest is only 5 in. deep. My center channel a Mirage OM-C2 is (24w X 12d ) thus 7 inches would be hanging off the edge (not very stable). I cannot place the speaker below and also cannot wall mount above display unit(windows with shutters directly behind). Are there any accessories that have a plate that lays on top of display and extends toward back with cushioned legs that would balance on the sloping portion of display ? I recall seeing something like this a couple years ago. What are some ways to resolve this issue ? The OM-C2 is one big center channel. Thanks for your responses.