I've got a Fender Rumble 150 that crackles and pops and the sound drops, it doesn't completely lose sound.
I've popped her open and the input prongs are tight against the 1/4 plug, and it doesn't feel like the pots are loose.
I've poked around a little and the connections seem fine, I haven't done too much investigating on the connections, though.
I've taken the grille off and the speaker cloth seems perfectly intact. I haven't removed the speaker to have a look yet, though.
There's also a small hole to the top right of the speaker, I'm guessing it's the woofer but I'm not really sure what it is.

Does anyone have any suggestions on what this might be, or at least suggestions on what to look for?
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