[solved/derailed] Weird filter response : inverted cutoff and resonance?

Hello Shrutizens,

I’m currently working on adding a Polivoks filter in parallel to my awesome but so far SMR-only Wasp XT™ Shruthi.

Apart from minor issues with phisical switches I’m facing something really unexpected :
I tested the two filters separately and they are ok but when tweaking the parameters I realized that “cut” seems to control resonance and conversely, “res” seem to affect cutoff, on both of them
Could it be that I messed up the wiring between the filters and the digital board (since i’m not using the standard connector to stack the boards anymore) ?
If so, which ones should I look at ?

Thx in advance

Any ideas anyone ?

Looks like a wiring problem indeed!

Big chance that you reversed 2 wires in the connector. That would explain what you notice

Alright then !

What pins are used for cutoff and resonance on the boards ?

They are labeled F for Cutoff and Q for Resonance

Obviously they were inverted : that what’s happening where you’re using pale red and pinkish red wires together while being slightly color blind…

You are a lucky man if can see “74” here :

Or welcome to the darkside if you see “21” like me

(actually for some Animal Collective Acid Eye Psych, better check the image in high quality there, it’s quite stunning when zoomed)

There is mushrooms in that picture!

My brain hurts looking at those