i have a yamaha sw-305 sub that at present is inside a cupboard with double doors to the left of the tv facing the same way as the tv. lying on its side the back of the sub is touching the back wall and the front is touching the 2 front doors of the cupboard. the sub has 2 8" drivers facing forward with the port in between also facing forwards. this means that there is only about an inch gap to the doors. do you think this will effect the performance of the sub much. i've tried listening with doors open and closed but cant tell much of a difference but im not sure.??