Currently, my projector is sitting on a shelf that is mounted to the back wall. The shelf sits atop neoprene washers and the projector sits on vibrapods. The sub sits behind the rear seating, up against the back wall about 5' below the projector. The projector is vibrating from heavy base. I cannot move the sub otherwise it will sit in the middle of the room. I was thinking about building a shelf that would suspend from the ceiling via some chain. Thoughts? Or any other ideas? At this point I am unable to use my sub to its full potential until I can isolate the projector better.