Help with opamp bandpass (twin-T)

Started by cordovaplata, May 18, 2012, 11:18:07 AM

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cordovaplata

Hi everyone! a couple nights ago I made a circuit in Livewire: an opamp bandpass using a twin-T. I took the values form the R's and C's from the Colorsound inductorless wah.
Finally I manage to create it. and it worked!
The problem? Well, I have a very sharp Q (I think it's because of the hi gain of the opamp) and a lot of resonance; almost going into self oscillation.
What do you think it's the best? I always left the resonance pot at max resistance (100k) but I still have a sharp sweep. what do you suggest me to do/replace?

Here's the schem.
Samuel Córdova