Hi I recently installed a Harman Kardon surround sound system with AVR 3650 and HKTS 60. Everything is working perfectly except for one detail. From the back right speaker only (that's where I hear it from), there is an occasional click/pop sound. It is very annoying when trying to listen to music, play games, or watch a movie... I have absolutely no idea why it is making this sound only from the one speaker. Did/does anyone else have this problem? How can I get rid of this sound?