Here's my dilemma: After moving to larger home, my twin SVS PC-Ultras no longer give me the output I'm used to. The theater is now located in a second-floor loft that's 14' X 20' but only three walls...the fourth "wall" leads out to the rest of the house. To a sub, we're talking filling up about 28000 cubic feet of woofage. I could buy a couple more Ultras or sell the Ultras and get a couple of PB12-Plus/2s or get a Buttkicker for the sofa. What would you guys do?