My Tempest in an SBB4 Tempest and I love it for HT. It has all the punch I love for explosions. Although I am still powering with a minisystem it is plenty loud (for now anyway). The problem is music is a little less satisfying. Here are my observations: I finally have the sub calibrated to the point where it blends well with the mains and doesn't stand out as the source of bass. The problem is that when I play it louder it doesn't get more punchy per se, its just like the bass is too "thick" for lack of a better term. The bass seems to have little detail as well. At first I thought maybe the porting was responsible but I plugged it and noticed little to no difference. So I've narrowed it down to a few problems I think could be happening: - It is in the corner of a nearly square room, I am guesing I am getting all kinds of bad room effects. The bass is strongest in the rooms corners and weakest near the centers of walls in general. - I notice that reversing the phase has little to no effect so I am guessing I am roughly 90 degrees out of phase. - Dustin B mentioned something about a poor damping factor in minisystems ( not sure what this means but maybe it is responsible for some of these probs) - It is just sitting on 4 inch legs, I've heard a cement slab can improve clarity, is this a good idea? Yes I know the SBB4 is probably the least musical allignment but I'm sure I can improve its musical performance.