Hi Brach,
so I reversed the resistors as you said (BTW they both measure a solid 10k), and now the low signal doesn’t shut off, just like the high signal before the change. So it seems that the problem has swapped sides. The mix knob still behaves the same way though, as in no effect in the fully high position.
In fully low position the high frequ band pulsates nicely, while the low portion rings through steadily.
Mix middle gives the greatest effect, while the low signal still bleeds through, albeit less than in full low.
Full high position no effect, however it sounds like the low frequencies get filtered out.
Concluding: The problem seems to be with the low frequency band after the swap.
Hard to describe, even harder to compare between before and after, as it’s been a few days. Good thing I have made these videos 🙂
What I’m gonna do, is swapping the transistors anyway, just to make sure those are Ok. And I’ll be using sockets, so I won’t risk frying them. Also I’m going to undo the capacitor swap and put in fresh ones.
I’ll report back once I’ve done this.
But if I understand you correctly, all of this points towards a problem with the microcontroller. Not happy about this, cos I don’t really know how all that flashing business works, plus I don’t use a Windows PC…
So if that’s the case, shouldn’t that fall under warranty, and thus warrant a replacement uC?
I bought the kit from floating point audio in France. Should we talk to them?