• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

Buzzing SWR 112

I wasn't clear-- this is a constant buzz, not a buzz as I play. This is all the damn time. You hear it between songs, not during. running the amp through the PA, which I prefer, isn't possible because of this noise. it's not a 60 cycle buzz, either.
 
Are you sure it's not 60 cycles?

Approximately what is the frequency?

Is there a tube in the head? Try a different bass with it,
or better yet, nothing plugged in. Ground loop?
 
It's going to a tech for sure. I like to walk into any repair situation with an idea of what's wrong. It buzzes with nothing plugged in, so I th ik I may have aground problem I couldn't get to myself. thanks to all.