I have a 5.2 340SE LCR/170SE setup in a large basement (8000+ cu/ft) with dual SVS 12-inch subs. I'm looking to upgrade to dual 15's and would love FV15HP's but want to cap the budget at $2000. The FVX15's would fit in the budget but I worry about them having "only" 400-watt amps.

I've been looking at the Hsu VTF3 Mk5 which seem to offer a lot for the money and have 600-watt amps. Any thoughts on how the FXV would compare to the VTF3.5 in a larger room? I don't listen anywhere near reference levels but would like more feel to LFE and better detail in music than I'm getting with the PB12-NSD's.