I am working on a theater right now that is going to have a cabinet built for a sub to sit on inside a wall. Behind the wall is a closet that will be open for us to slide the sub in. It will be a front fireing sub. They are going to have wall paper put on the wall. I was throwing out some ideas to the client about how we could cover the opening to make it flush with the wall. My 2 ideas were to put molding all along the outside of the opening and have the front of the sub visible. Or to have a black or white piece of cloth covering the hole. Does anyone have any other ideas?