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Mackie Thump TH-18s problems
Hello everyone this is my first post here. A customer recently brought in a Mackie TH-18s powered sub. It would cut out while in use and if you tapped on...
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Need more bass thump from Champ
My BF Champ has a 4.7uf cap alongside that 1500K resistor going to the first preamp tube. Can't remember why that value since this amp has been moddded a...