i know i gotta do LxWxH divide by 1728, but then there is also the woofer itself how much does that take up Kicker cvr 12, then i dont really know... im gonna make a seald box out of 3/4 mdf, 13X13X30 what would the volume of that be ? or 29 1/2"W x 14-1/2"H x 14-1/2"D depending on how much airspace it is... kicker recommends 1.0-3.0 cu ft. i want tight bass but also to sound good