Low level buzzing coming from tweeters.


I now have a low level buzzing coming out of my tweeters even when i am in mute. It happens even with the amp on and preamp off never had this before.Any suggestions would be great.Thanks in advance.
ebm
@ncarv

If a tube is doing this, it won’t be one of the output tubes. They can make cracking and popping sounds but a low level buzz is unlikely.
@atmasphere 

Thanks for the tip. Saves me from a futile testing regimen.

I’m planning on trying a solid state amp this weekend to rule out possible electrical problem.
Switched the amps between the tweeters & woofers. Buzz was originally from the tweeters. The buzz now came from the woofers, tweeters silent.. Gotta be the amps?
 I have a pair of atmosphere m60s and had that problem and it turned out to be an input tube.  I also have a LuTron dimmer in my room and whenever the lights are on I get a little buzz as well.