I've been having some troubles with my Vox VT50 recently. Whenever it gets cranked up even slightly the speaker starts popping at random points. Like there's not really a note that causes it nor does it pop at certain intervals.

I took it to a tech and he said even he has no idea whats causing it, but my bet would be on the speaker. Since when it's plugged into my 4x12 it doesn't cause it that I hear.

So do you guys think my speaker is dead(or dying) or is it something else?