Here's a simple one knob tone control - actually a bass boost/treble cut - treble boost/bass cut circuit that might interest somebody:
Designed as it is, it will give about 10db of boost/cut with the cross-over frequency at about 1kHz. As a picture is worth a thousand words .... here's eight thousand words.
The diagram, top left, shows the frequency response with values as in the schematic - the pot is set at 100%, 75%, 50%, 25% and 0%. The second diagram shows the same values but with a 50kΩ pot. Diagrams thereafter show the original values but with two componnent changes. The component changes should be made in pairs i.e. R1 = R4, R2 = R3, and C2 = C3.
As a PCB:
Or for those who can't etch PCB's:
Please note the picture of the second strip board is looking from underneath (i.e. reversed).
I haven't built this circuit - so as yet it's unverified. I would be very happy if someone could verify both PCB and stripboard. As always suggestions and critiques are welcome as are build reports.
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