Now that my floorstanders have been going for a month or so, I have to report that I am very happy with the sound of the Vifa TC drivers in an MTM config in the 4.5 ft^3 box I built. (See earlier pics). The bass has relaxed a little bit due to driver break in, but these things still shake my apartment. I was watching Lord Of The Rings last night, and my couch shook during the low frequency sections. This is without a sub! Best of wishes with your speakers. If they sound as good as mine turned out, you will be very happy.
Cheers,
Zach
Cheers,
Zach