I am wanting to put a beavis style voltage sag mod on a positive ground fuzz face. Should i wire the pot to resist the negative instead of the positive?
I am also wondering about a bass cutoff switch. How can i figure out the bass rolloff points of the output cap values?
bump
If your FF is postive ground wire the pot in series with the V- of the power supply.
To find the roll-off (corner frequency/-3dB roll-off).
f = 1/2*Pi*R*C
Thank you!
Hi
to clarify, that's f=1/(2*pi*R*C), where
f is frequency (Hertz), R is resistance (Ohms) and C is capacitance (Farads).
Rule of thumb says that when R1*C1=10, f = 30 Hz (ie no loss, R1 in kOhms, C1 in microFarads, e.g. 10k and 1uF).
R1*C1 = 1 gives noticeable/useable bass roll-off (f=300 Hz, e.g. 10k and 0.1uF or 100k and 0.01uF).
cheers