This isnt my first go around, I also own modified khorns, heresy 3 and cornwall 3 and have built a few pair of my own design.
The mic is a UMIK-1 calibrated, I was at 1 meter and 0 deg and height was 1/2 between mid/tweet. pointless in looking below 400hz I am only pointing out that Klipsch dialed the Forte III in with a "hot" tweeter. Some like that, I am very sensitive to it. A couple of reviewers also comment on the "hot tweeter"
I love the speakers, just need to deal with the slightly "hot" tweeter, this temp fix of polyfill actually works really nice. gives about a 3db reduction