What am I missing here guys? I imported FRD and ZMA files from graph tracer . They seem to load correctly. Im just wanting to try different values on a single woofer . When I change or "tune" the values I would expect to see the frequency response move with it , the impedence graph changes some but not the FR of the driver? I checked out the youtube vid Ryan posted but I must be missing something. I dont think I need a tweeter in the mix but maybe I do ?