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Tone control – response and corner freq.?

5/7/2000 6:07 PM
lion	Tone control – response and corner freq.? A lot of FXboxes seems to use the same tone circuit. A pot – usually 20K – between the + and – inputs of an opamp, with the wiper of the pot to a RC combination to ground: TS9 = 220R/0.22 DS-1 = 470R/0.27 I’m modding a OS-2 which has 4K7/0.01??? I’d like to know what kind of response this circuit has – is it linear in the center position? I’d also like to know how to calculate the corner freq. ? Any help will be appreciated. Lion

5/7/2000 6:07 PM

lion

Tone control – response and corner freq.?

A lot of FXboxes seems to use the same tone circuit.
A pot – usually 20K – between the + and – inputs of an opamp, with the wiper of the pot to a RC combination to ground:
TS9 = 220R/0.22
DS-1 = 470R/0.27

I’m modding a OS-2 which has 4K7/0.01???

I’d like to know what kind of response this circuit has – is it linear in the center position?
I’d also like to know how to calculate the corner freq. ?

Any help will be appreciated.

Lion