I just received my Dayton DVC 12" sub and PE 250w amp. I have plans to build a small sub due to size constraints, and was thinking about a 1.2 cu ft sealed. I really like the idea of IB in my attic, but don't have the money or need for something so earthshaking. I would also prefer a larger ported box so it can go lower, as I want this mainly for HT. My idea is to build a vented box, about 3 cu ft (depending on what would be best suited for HT and the driver) and to mount it up in my attic above my mains and have the woofer vent down into the room like an IB. Is this stupid, would this work? This would give me the size box I would prefer without taking up living room space. Thoughts, ideas, comments?