I own a classic 30, and whenever the amp starts to shake (mainly low chords like E) it makes a nasty popping noise. Does anyone know if its the tubes or something worse? Also, it only starts up after about 10 minutes after playing.
Sounds like it only happens after your tubes warm-up... I'm not a valve expert. How long have those tubes been in the amp?
Stock speaker? The blue marvels are notouriously ****. Bad bass response?
It could be a loose tube filament or a tube loose in a socket. Something (like a jack) could be warming up and getting loose. Just to rule it out I would clean the jacks and pots, and check the wires going to and from the speaker. If you are diming the volume it could be a speaker issue. Might be ready to blow.
it could be the speaker, that is typical of a blown speaker, could also be that the tubes are gone, but that's usually accompanied by a loss of volume
My Pro Jr started making snapping noises then later blew the fuse. One of the EL84's were shorting, so I replaced them both.
damn. And I just got my guitar fixed yesterday.............