Hello,

I have a stock speaker system that has recently gained a crackle/buzz in the rear right speaker. This noise changes frequency with the engine RPM and is not affected by the volume of the audio (i.e. it's present in the same intensity if the volume is all the way down or at full blast). This is only one speaker, so that cuts down on the possibilities for what the problem dould be a bit. I poked around behind the speaker causing me problems, essentially looking for some kind of loose connection, but found none. Anybody have any clue what would cause the symptoms that I described?

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:
arstechnica.com/civis/viewtopic.php?t=957343
Startup video agency

Thank you.