I have 2 12" Type E's alpine subs and i wanna make a custom sealed enclosure for it. I searched the forum and i cant find the post about it, but i remember seein it. it was about making the raised lettering under the capet of alpine sticking up. How do you do that again? Also how can i find out how much space inside the box the alpine subs will take up? I wanna make the box exactly 1.25 airspace for each sub. Thanks guys!