Im looking to buy 2 more subs for my home theater system. These subs will be receiving a 50hz-120hz signal (low pass 120hz, high pass 50hz, 18db/oct crossovers). They need to sound good in this range, Im not concerned about how they sound below 50hz. Im only looking for the speakers themselves, I build my own boxes and have my own amps/crossovers. Im open to any ideas. 10"s, 12"s, ported or sealed boxes (although i prefer ported due to increased efficiency, but the peaks might be a problem). I have 1000-2000 watts RMS to play around with.. These will be mono-signals (i wish it was stereo but no.), one sub will be in front right corner of room, one will be in front left corner. Lets hear some ideas!? By the way, I already have my "low sub" system put together, an Avalanche 18" in 17 cube foot box, 70sq inch port, tuned at 16hz with 1100 watts RMS ... this does great from 20hz-45hz, but has very little output above 50hz.. which is the reason im looking to make this second subwoofer system... What do you think about these Dayton speakers from Parts Express? http://www.partsexpress.com/pe/showd...number=295-404 http://www.partsexpress.com/pe/showd...number=295-466 Any and all comments are appreciated!