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rolfole
modified 6 years ago

R.G. Keen parametric eq.

4
3
132
01:43:24
Geofex notch or boost filter. Turn the up most Pots to adjust boost or notch filtering. Turn the others to set frequency and resonance.
published 10 years ago
hurz
10 years ago
Nice. I like the frequency tuning feature. Anyway, the last opamp inputs have to be swapped +- -+ or it will trap as schmitt trigger.
rolfole
10 years ago
Yes just noticed! Thank you!
hurz
10 years ago
You are welcome!

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