i have all 5 klipsh speakers w sub and never abused them ...i have a new yahmaha reciver and changed my speaker wires and still have this problem. sometimes while watching tv or dvd my center chanel goes low and my right speaker goes louder where the voices from th tv come out the rt speaker. if i turn off the reciver and turn it back on it goes back to the center. just last night it changed from center to rt and back to center. what do i have to do or is my center channel broke.??? am i hooking something up wrong??? please help .