Guys, I am planning to mount a pair of Polk Audio T15s as L/R surrounds for a 5.1 on the back wall of my small theater room which is 11 ft. wide and length of room is 17 ft, height 9 ft., problem is, just behind the area of the drywall where the left surround would be on is a bathroom and the multi-bulb light fixture is just behind that very spot. Will that be a problem for the left surround speaker picking up interference from the AC line (which runs horizontally)? The 12 gauge in-wall wire for the speaker would be coming down from the top and exits the wall just a half-foot before it crosses the AC line at a 90 degree angle. I know the 90-degree path rule but these wires doesn't even intersect -- just off by approximately 6 inches. Should I just stay away from light fixtures, if so, by how much? Since the back wall is only 11 ft. wide and this is a L surround, my only option is to go up because they say the higher the surround, the less the sound is localized.
I'd really appreciate your inputs.