My Tempest sub is complete: Adire Alignment (214 Liters) 15" Tempest Driver 250W AVA250 Amp Wired in Parallel My old sub: 8" Aabstract Acoustics The box is painted all black, and is truly huge and beautiful. I expected it to be just outstanding. But it's not performing as expected. What follows is mish-mash of tests and what I found: When playing DVDs, I must keep the volume on the sub turned down to about 20%, or it starts popping like crazy during bassy scenes. Bassy scenes sound great at this volume though, rumbling appropriatly. Bassy scenes: Helicopter explision in the Matrix Helicopter mini-gun in the Matrix Spanish dancing in Mission Impossible 2 (foot stomping) But for less bassy scenes (99% of the movie), very very little bass is heard! For other media (TV, Radio, CD), I find that to get this sub to equal the SAME volume as my old 8" sub, I've got to crank the volume on the box all the way to the top. At this volume, it sounds great, and almost all frequencies play very clean (whereas the old sub would distort). Yet, I can't turn it up any higher, because it's already cranked to the top!!! My Receiver has a test tone for the subwoofer (and other speakers). When I play this test tone, I hear a low rumbling from the sub. With the old 8", at 50% volume it would rumble quite loud. With the new sub, It's very quiet, and I need to crank the volume all the way up to get the same rumble!!! So basically, this new sub hits all the notes clean (when the old sub distorted), but I've got to crank the volume all the way to the top to get even 50% of the old sub's volume!!! DVD is the exception. On DVD, this sub must be turned way down, or it distorts like crazy! I've been going nuts trying to fix this, and I have no idea what is wrong. Is this actually how it's supposed to work? I wired this sub in parallel (both positive connectors on either side of the sub wired together, and then to the amp, same for negative). Is this correct? This thing is definatly air tight, I'm sure of that. I don't feel much air moving through the two ports on the bottom, should I? In fact, the only time it really moves lot's of air is when it's popping. You guys always praise the Tempest for being so great. Either my standards are way too high, or something isn't quite right here. Please help! Thanks. Jonny K.