I am rearanging my living room. Maybe? I have a subwoofer with a passive radiator. My question is what is the minimum distance the radiator has to be from the right wall. The way it looks I only have about 2", is that enough? Or should I just leave my downfiring sub there? http://www.sourcespeaker.com/XLS.html http://www.sourcespeaker.com/SW12ULT-DFSub.html