Today was a lot of testing, and A/B listening tests between the conical and tractrix horns of mine. Fired up the conical, and took a few freq response measurements with SW. I had to add a filler block in front of the cone to displace ~30cm^2. Its +/- 3db from 500Hz to 1.6Khz. Not bad! Below 500, theres the dip and then the peak at the conical horns cutoff. The peak is actually flat with the rest of the response, but I'm crossing at 500Hz anyway to the 2225 for