@coupe70 don't use the svf nose, use the svf_eq node.

Neutral q is 0.7071 rounded, yes, square root of 0.5.

I recommend you try butterworth filters in Faust since they allow you to set the order and their frequency cutoff is always the value at - 3db.

@coupe70 ah yes, iPlug has a notoriously small binary size and a very basic feature set if you compile a minimal example. Any JUCE made plugin has at least ~12MB of size because there are more things included (graphics frameworks, plugin wrappers, other stuff). HISE adds some things onto that - even if you just compile a effect plugin with a simple filter, the binary will include the code for the streaming sampler module, the scripting engine and all the rest.