Well spotted , Thanks , I'll seperate them and put the 10k / 0.001 on the bass potrootz wrote: ↑Wed Mar 01, 2023 12:57 pm I don't think the tone stack will work as expected. You are essentially lifting the bass pot with a huge 250k mid pot, thus providing something like a mega boost and rendering the stack useless. I only know this arrangement for the Bluesmaster preamp, where the mid pot is 25k. #102 front end looks a bit different. There the mid pot gets its own ground and the bass pot is grounded through either a 1k8 or 10k resistor (the latter in case of a Skyline stack).
I'll go without and see
I'll have to do some tracing on the PCB to get around this I feel, and see what needs to be wired at the potsrootz wrote: ↑Wed Mar 01, 2023 12:57 pm Your master and volume pots are arranged differently too. You now have a separate clean and OD master, instead of a ratio control feeding your master in OD. That is again typical for HRM, but not other Dumbles. The only exception I can think of is ODRS #60, but that is a different kind of beast because of the mixing stages of the reverb anyways.
Luckily, the conversion from HRM to #102 is rather straight forward. Just stick to the exact #102 values/schematic like Martin said.
I think I'll just remove itrootz wrote: ↑Wed Mar 01, 2023 12:57 pm On a sine note: you could make the HRM circuit/stack (foot)switchable. I think Two Rock did so in the Opal. I experimented with this and this way you can get a nice compromise between regular ODS and HRM. But never perfectly both! You'd need some more switching to achieve that as there are actually quite a lot of differences between regular and HRM.
Updated Tonestack