MiSeRY
Well-known member
RoCk4souls said:in addition to replacing the power tubes check the inner support of your cab.
take off one of the handles and inside you'll see a board that connects horizontally to the back panel and the speaker baffle board. mesa glues these supports to the back panel and after some hard playing they can come loose and sound just like a speaker farting out, especially with a lot of bass and volume. it may need reglueing.
my cab did this and it took me forever to figure out what was causing it.
hope this helps.
thanks man. i'll pop it open and take a look.