Hey Guys, I would like to build a sub for both music and HT. My room is about 18'x15' with concrete floor. After spending days trying to place the fronts for decent bass, I've discovered the room is a bass vacuum. Anyways, after some research, I'm looking at getting the AVA250 sub amp and the Tempest driver. I'm quite new to all this and have no clue what Q and Fc are, but based on the enclosure descriptions I'd like to go with either the EBS or Adire Alignment. I've never done any wood work before, so I hope the cabinet isn't too hard to build. I've also taken a look at that WinISD program I see mentioned in this forum... no clue how the heck to use it. Anyone have comments on this project? Does the amp/sub/enclosure sound like it would fit my room size? Is there another combo that would be better for the same price or cheaper? I'm in Canada, if it makes a difference.