Well I just ordered an Image Dynamics IDQ 12" sub and need to get some dimensions for a box to build. I am trying to go with both a decent amount of sound quality and loudness, so I am assuming ported is the way to go. This will be going into a Mazda3 trunk, which has 11.4 cubic feet of space. If you need length, width, and height dimensions, I can get those. If anyone could recommend me some dimensions and tuning values that would be great. I would like to build the box out of wood preferably.