I'm kinda of a newb at car audio.. in fact, my first drag was today. I got slaughtered.. 134.9 in Street B. Anyway, I really need a new box. I'm running an audiobahn 1800 watt (it's at 1 ohm) to two db drive platinum twelves from a clarion dxz945 head unit. I'm looking into building my own, larger box. I just want to know how to tune a box and how different tunings affect the volume. Any input will be greatly appreciated. Thanks, Fitz.