Sounds like you have a voice coil rubbing then hanging up Do this with even preasure on the speaker in question push the speaker in and out and if you feel is rubbing or a scrapping sound that is your problem Or mabey you can find a audio store in your area to check it out good luck and post back to us steweeee
I have been using an Onkyo TXSR604 to power my home theater for about two months. I have it connected to a Definitive Technology ProCinema 60 5.1 speaker system. Recently, the left surround speaker started making a popping sound. It is a short stuccato pop that is not tied to variations in loudness and appears to occur randomly. To rule out speaker problems, I switched the two surround speakers and the sound continued to come out of the left side. To rule out speaker cable problems, I switched the left and right outputs on the back of the receiver. When I did this, the popping started coming out of the right side. Hence, it seems clearly to be linked to the left surround output on the receiver.
Has anyone encountered this problem? Any suggestions? The receiver is under warranty, but I don't really want to be without it if I can help it.