I don't know where yall from but here not many people run IDs esp after the serious problems they had... most peeps here run CDT DD JL Focal PG a very few ID,eclpise ... there are designs that are superior in output.. just look around.. the axis has a good deal more output and sounds excellent ported.. w7, acendant audio havoc depending on your application if ya want sealed audiopulse is the way to go or look into the soundsplinter RL-S sick woofer.. also soundstream reference would do nicely.. the ID max gets loud so if you want more output your going to have to upgrade you amp... if you can get a good 2k i would grab the audio pulse axis.