I recently got some beer to clean my both guitarists' AC30's - that both are from 1979, Rose Morris era.
It's always fun to look at those guts inside. I'm wondering... there's a switch that is completely covered by a back wooden plate. You can see it only when you remove the back. Looks original to the amp. Is that a voltage switch or polarity switch or....? (pic attached). Second question. The two big pots on the main lower PCB - I assume they are not bias pots, as Voxes are cathode biased, what could those be for? Any thoughts? We need to replace the tubes, so maybe also clean the amp and set it right way.
It's always fun to look at those guts inside. I'm wondering... there's a switch that is completely covered by a back wooden plate. You can see it only when you remove the back. Looks original to the amp. Is that a voltage switch or polarity switch or....? (pic attached). Second question. The two big pots on the main lower PCB - I assume they are not bias pots, as Voxes are cathode biased, what could those be for? Any thoughts? We need to replace the tubes, so maybe also clean the amp and set it right way.
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