Steiner Parker filter ( Yusynth )

[analogoutput]

For the benefit of future readers of this topic (future me, perhaps) there were several posts in another topic about the resonance problems with this filter, starting here:

My build progress

Is your SP filter already finished and does yours start to beep at some point if you turn the cutoff and resonaz a little too far? I was expecting something similar to the MicroBrute, but mine whistles pretty hard very quickly. I have exact this circuit on a printed PCB. Do you have any suggestions? [image][image] Besides, I’m proud to have everything on the Eurorack panel.