Hi! i am expecting a 100.4 and im going to use it active, so please enlighten me. set channel 1/2 to HP x10 and HP it at say 5000hz, set channels 3/4 to lo pass x10 and say at 5000hz and set the SS of channels 3/4 to around say 80hz to band pass the mids as per your post, the SS knob is functioning independently regardless of whether the channels are used in HP/LP? thanks