Reviving an old thread (as the Charlie Brown is still NOT traced!)
So I took a close look at a pcb shot (picture with values attached), and it does look extremely similar to the dirt section of a Box of Rock, with a couple modified values and an added contour pot.
I don't know much so I might be wrong.
82k, 47k, .1uf and .022uf show the contour pot is probably done like this
And the only other differences seem to be a few resistor values in the first SHO section:
- 2k7 instead of the usual 5k1 at the drain (that would mean less gain right?)
- An electro might connect the first BS170 source to the gain pot, and there's another 2k7 close, so that could be a way to get rid of the noise (crackle) (like Guero said) (I dont really know what I'm talking about, just guessing here)
What I cant figure out at the moment:
- 2x 100ks at the bottom
- 62k by the blue electro
- 150r below the 2x 22nf
- the blue electro
- the yellow cap at the top
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