I made a couple of Frankencenterspeakers, starting with the Merak (Axiom subbrand) anti reversion wave shaped speaker cabinet into which I placed 2 Axiom 6.5" drivers from the M3/M60/M80 speakers. One of these speakers came with the Merak large horn loaded tweeter, which I left, and the other I swapped the Axiom 3/4" titanium tweeter for a 1" from the Reference 3a de capo mm.
[img]http://img.photobucket.com/albums/v192/2x6spds/NEW%20AUDIO/AXIOM.jpg?t=1220132275[/img]
The speaker is quite large, but dwarfed by the giant Mitsubishi Diamond TV.
I had to play with the cross-over to get everything to mesh, added a modified super tweeter and ended up with a pretty spectacular center channel speaker.
Here's the other frankencenterspeaker atop my old Hitachi 53".
[img]http://img.photobucket.com/albums/v192/2x6spds/AUDIO/OFFICE1.jpg?t=1220131576[/img]
This is the one with the Reference 3a de capo mm tweeter and cross-over.
I've since upgraded by Hitachi 53" to a Toshiba 65"DLP, so for the occasion I got a VP150 - also very nice.