How do I get my soundstage back?


I seem to have lost my stage and am struggling to get it back, here's the story.
* My setup is set in a bay window with the speakers @ 7ft apart, the back outer edge of each box in about 8" from side/rear wall & inner edges at 15" these side walls taper back to the flat rear window wall of the Bay. In my old setup there was a 20" TV on a stand and a stereo cabnet 42" tall and 22" square. I had a nice high, wide and resonably deep stage. The stage reached pretty much to the the 8 foot high ceiling.
* Changes in setup:
The system is still in the bay but now there is a nice new 50" Pioneer Elite plasma in the middle on a stand that is 6ft long, 22" deep and 19" high the screen on the stand now is 51" high and 56" wide in total and all gear is now in or on this stand with the TV. The soundstage is now flat, no depth and sound has dropped to about 2-3 feet off the floor. To me the speakers are now much more visable you might say in the past they pretty much disapeared. I have played some with speaker placement but so far not having any luck, I even tried throwing a blanket over the TV to see if that would help but no luck.

What do you suggest I do or try to get back to square one?

Gear:
Speakers - Paradigm Reference Studio 60V2's
Sub - Paradigm Servo 15v1
Power amps - Odyssey Audio Mono Extreme SE's
Preamps - S.F. Line2 SE+
CDP - Cary CD308 (solid state)
SACD/CDP - Sony SCD333ES

Thank for your help.
wizard454
first thing is make sure your tv is behind your speakers. look at my pics. i have a very large sound stage tall, wide and deep. no problems with my plasma between my speakers. i have also hear the blanket over the tv works, but it needs to be a very dense blanket
Copland, TacT or Rives Room Correction processors.
If you shop around on used market, you can get at least one of these for about 1K. Where conventional solutions fail there is little hope without professional advise and help. These unites are user friendly and very effective in what they do best, which is to correct your room's acoustic problems......
Cheers.
Thank you all for your replies and there are suggestion here that I will try.

Best Regards to all.
There is a product called Acoustic Systems resonators that would make the whole tv vanish!These devices act as focusing lenses and enable one to create a virtual soundstage within ones own room ( even if your room has major issues).The ASR's even control bass and soundstaging to the point of moving it backward or forward depending on ones listening preferences.I was very skeptical until I installed a complete set and had imaging to die for.Room correction devices disturb the natural phase of ones signal. I hope this helps and good luck Dennis