Trying to understand what you said about R5/6 & C6 not being in the signal path...
So, they are doing some filtering, but the "signal" passes through pin 5(6) of IC1-B? And R5/6 & C6 are not "signal path"?
What I'm a little confused about is how the filtering is operating. I understand how an R/C network filters off treble e.g. a "tone control" (capacitor is grounded, bleeds off high frequencies, resistor limits bleed to cap). But in that scenario, the cap is always bleeding treble to ground. In this case it looks like it's bleeding it around IC1-B (?).
I'm also familiar with using a small cap to filter bass... and that looks a lot like the arrangement of R6 & C6, but again, turning on IC1-B filters more treble, not more bass. So if I carry that logic through, is R6 & C6 filtering (more) bass around IC1-B? So it's not reducing treble, it's adding bass?
Or have I missed this entirely - and R5 is involved in the filtering too... and somehow the grounding through Q1 is pulling off treble? I thought the Q1 circuit was strictly handling the foot (overdrive) switch. Does it do something else?
Thanks,
So, they are doing some filtering, but the "signal" passes through pin 5(6) of IC1-B? And R5/6 & C6 are not "signal path"?
What I'm a little confused about is how the filtering is operating. I understand how an R/C network filters off treble e.g. a "tone control" (capacitor is grounded, bleeds off high frequencies, resistor limits bleed to cap). But in that scenario, the cap is always bleeding treble to ground. In this case it looks like it's bleeding it around IC1-B (?).
I'm also familiar with using a small cap to filter bass... and that looks a lot like the arrangement of R6 & C6, but again, turning on IC1-B filters more treble, not more bass. So if I carry that logic through, is R6 & C6 filtering (more) bass around IC1-B? So it's not reducing treble, it's adding bass?
Or have I missed this entirely - and R5 is involved in the filtering too... and somehow the grounding through Q1 is pulling off treble? I thought the Q1 circuit was strictly handling the foot (overdrive) switch. Does it do something else?
Thanks,