Question about mounting a pair of Klipsch RS-3II surround speakers on the rear wall. These speakers are heavy (12 lbs each) and big, being horn speakers. Does anyone have recommendations for dependable speaker mounts that could sustain the weight with minimal structural changes (nails, clamps, etc.) to the rear wall? Where could I buy one? Or are there any other recommendations of placing the surround speakers? Any other section in this forum that I should post this question to? I checked out Radio Shack and the max they have is something that can only handle 10 lbs. I live in northern California - so if someone knows of a store in the bay area, please let me know. Another point: the mounting slots on the back of the speakers are around 5.5 inches away. So the clamp has to have a 5.5 inch spacing to accomodate the speakers.