Well I've been looking into Ascendant Audio and have been thinking about purchasing one of those 18s for my HT. Now, my current sub is a SLOUCH. IT is a 8inch HTIB peice of crap HTIB. NOW.... My main concern is deciding which woofer to get. The 18 inch, from what I can suppose, will let me hit 100db at atleast 16hz. However, I fear that it will be awful for music, I mean with a driver that big, it must have some drawbacks. Now here is what I'm trying to understand. If I purchase a 18, would it be too slow for music? If I purchase two 12's, would it be fast enough for music and have the ability to hit 100 db at 16hz? How big of a box and what type of amp would be required to pay homage to those beasts. And one more question, for the sanity's sake, what type of commercial woofer would be in the same catergory? My budget is around 500 dollars, I can push it to 600. But yeah, I would really appreciate a good response. Thanks guys! BTW, the room is about 15 X 15.