So I need some testimonials. I've read most of the threads related to them on here, I just want MORE! nah not too much. I've just gotta nut up and do it. I'm thinking about putting a 15D2 in a 3.0-3.5 cubic foot ported box, one tune to 32 hz or so, another to 45 or so. How much port area does this sub like? Also, I'm a fan of quick, tight bass. Will this setup deliver for me? I'm forward-facing it in my trunk, and sealing off behind it. I was just a little worried because the group delay is 2.5 times that of my current setup of four sealed flat cone ED 12K's. And the Le on the D2 seems high, but does it make a difference if the sub is wired in series or parallel? looks like in their specs they have it in series, so I was just wondering. Thanks to all who respond. except those who just like to post whore. you just suck