Hello, I have a RX-V1065 receiver. Bought it new, recently bought a better quality center channel speaker. Any time a signal is supplied or removed from this channel the speaker emits a loud pop. It is not the speaker, I have checked using another speaker on the center channel. It's possible the receiver has been doing this all along and my other speaker was not of a sufficient quality to pick it up, because when I connect it the popping sound is not audible. Possible warranty repair?