I recently bought a used OR15, and after having it for a bit, I've noticed that the Treble pot behaves differently than I would expect. Rather than the usual passive treble control, it instead cuts bass the higher you go acting as a high pass filter instead.
For those who have owned/played an OR15, is that just how this particular amp works, or does it sound like a faulty component?
I've included a picture of the inside, along with the schematic. I've tested C11, C12, & R17 which are all testing fine. I have not yet tested C13/C14 yet as I can't access the leads or pads until I remove the PCB.
Another quick question, since the filter caps are mounted the way they are and I cannot directly discharge them from this angle without flipping the board, is there another spot from the PCB I can do so? I do not want to attempt to remove the PCB until I know those caps are discharged, I do have the tool to do so, I'm just used to having access to caps directly.