hey guys..I am an avid car audio fan and have done alot of work on my cars..I have no problem box building, fiberglassing and calculating port, box size etc.. I really just need a little guidance in the home theatre aspect of DYI subs..I was considering using a behringer ep2500 amp and possibly a tumult..I am a bass nut and want it low and loud..now my question is this..will a tumult handle the ep2500? would a passive radiator setup be in my best interest to eliminate port huff with such a large woofer? I was considering a tuning of 16-18 hz..will this be ok? as for the box I will probably do a large MDF box or possibly a sonotube..are there any other home subwoofers I should look at? I would really like to feed a pair of affordable but capable 15's rather than just 1 tumult..cost is a concern, but as to not sacrifice performance..thank you in advance to anyone who can lend their expertise to a home theatre rookie..