SP1200 anti aliasing filter made variable + resonance ?

Thanks for sharing the datasheet! hadn’t seen that schematic before — fig 9 certainly looks close to what I’m trying to achieve. I’ll try playing around with this in the simulation.

I should have given more clarification on why I’m doing this — the design I’m basing this off is the original, static antialiasing filter from the SP1200 sampler. I’ve always loved its sound, and after simulating it I found some interesting characteristics, but wanted to make it variable for a Eurorack module and experiment with various aliasing artifacts.