Variable Bandpass Audio Filter Circuit


Posted on Jan 4, 2013    11163

This circuit is a variable audio bandpass filter that has a low cutoff variable from about 25 Hz to 700 Hz and a high cutoff variable from 2.5 kHz to over 20 kHz. Rolloff is 12 dB/octave on both high and low ends.


Variable Bandpass Audio Filter Circuit
Click here to download the full size of the above Circuit.

R2-a-b and R6-a-b are ganged potentiometers for setting lower and upper cutoff frequencies, respectively.




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