I have a sealed sub mounted/visible in the rear pass-through.
Only the sub is visible when the pass-through door is open.
There is rubbing against the door when it is closed.
I am considering a couple of new designs, one being a down firing sealed box in the same location. Or building a High Output box like that of the manufacturer but with the wedge (of the box) and opening towards the front of the car.
http://www.grandprixforums.net/f41/p...tml#post136061