Thanks Electrodynamic, and Tirefryr I dont see how lots of drivers and power would decrease SQ? plz enlighten me. I want SQ but i also wana be able to say i have 2/4 15 inch subs in my van, is that wrong And spl is and issue just SQ comes first. So sealed is the go? People have been saying you cant go as low and stuff with sealed, as i said i have no idea about enclosures. I listen to alot of metal, black metal, power metal. Lots of double kick and powerfull bass riffs. im guna get some CDT gear for the front, one of the 3 way systems and an image enchancement kit to go with whatever i decide in subs. Thanks.