wouldn't be as easy as taking a mold of each side (the bottoms of the box) and bringing the top of the box forward as needed?
I was thinking of using wood than carpeting it. I don't know how to mold the sides though. The front or top of the box would be simplest as it would most likely be flat, and all I have to do is cut a hole and wire. Maybe instead of 12 inch subs go with smaller ?
