hello, I play with the idea of a new subwoofer case. I have an audio a4 b5 limosine. my car has split foldable back seats with ski bag. now I wanted to build a bp case where the opening would show the ski bag to the inside room. the side tojm caseaum should be a wall. so nix show & shine. now is my question if I can build the sub like this? (see append) I have heard that you should not turn the subs against yourself. it should at least be so that sic h the pressure goes more into the inside room. now I have a br and it all takes place in the kofferaum. thank you.