I'm having an issue with one of my E120s. They are mounted in a 2x12 cabinet. When I hit notes almost exclusively on the B string above the 12th fret I get a little buzz out of one of the speakers. There are no problems anywhere else on the neck. I thought it may be my guitar so I checked for buzzing when playing it acoustically and there was none. I then pulled each speaker out of the cab and tried them individually. One speaker worked great and the other produced that buzz. I then pulled the problem speaker out of the cab and tried it again and heard the buzz when it's not mounted, therefore I know the cab is not the issue.
So then with the speaker outside of the cab I placed it on the carpet dustcap side facing up and tried it. No buzz. Dustcap side facing down=Buzz. Horizontal=Buzz. Back in cabinet with cabinet slightly slanted backward=buzz. I checked the speaker wire terminals, and made sure they were nice and tight and they look good. I made sure those little wires that run to the cone were free to move and they were. I shook the speaker and pushed and pulled on the magnet and can not get it to rattle, move, or make any noise. Does anybody have any idea what is going on with this speaker. Is the voice coil going out. It sound like something is possibly loose but everything seems really tight.
So then with the speaker outside of the cab I placed it on the carpet dustcap side facing up and tried it. No buzz. Dustcap side facing down=Buzz. Horizontal=Buzz. Back in cabinet with cabinet slightly slanted backward=buzz. I checked the speaker wire terminals, and made sure they were nice and tight and they look good. I made sure those little wires that run to the cone were free to move and they were. I shook the speaker and pushed and pulled on the magnet and can not get it to rattle, move, or make any noise. Does anybody have any idea what is going on with this speaker. Is the voice coil going out. It sound like something is possibly loose but everything seems really tight.