1 touch33 1 month ago It's my first post here, please be gentle...I must admit I feel a little strange posting a non-Gretsch question here, but my '66 Martin GT-75 is about as close to Gretschness as you can get and still start with letter other than "G" – full hollowbody, dual DeArmond 2000 "DynaSonic" pickup, Bigsby vibrato (and bridge). ANYWAY, here goes:I'm wanting to clean/renovate the electrics, and the tone controls (one per pickup) are unlike any I've seen: dual "stacked" potentiometer with a large capacitor on one and a small cap on the other. I've heard it referred to as a "parametric EQ", but (being a sound engineer) I have a tough time believing THAT description.That said, I'd sort of like to know what I'm getting into before I yank everything out of the body. Does anyone have a schematic for a Martin GT-75 or something with a similar type of tone control? Any information would be greatly appreciated.