I have to Audiobahn 12's, and need to build a box. I want the loudest, hardest hitting bass I can, what kind of box should I build? This will be going in the back of my pickup truck. Extend cab. So I've got a good bit of room. I just don't understand how big to make the box, or how much volume is needed inside the box. Please help!Moderated By: brian@diysubwoofers.org