I tried that this time actually, and didn't really get the results I was looking for. The horn was tuned to 58.3hz (I doubt my cuts were accurate enough to bother with the .3), and thats what i did my run on. (second run was 20hz just because I knew it wasn't going to get any better than that.) It's 10 feet corner to corner. 1165 / 10 = 116.5 divided by 2 = 58.25 temperature and flex any box space probably threw that all off, but this time I'm going to try something different and go with what I can measure as a peak on a mic. I wish I had a real calibrated RTA to use, but I'm still new to this game so I figure I might as well try all the silly things I can and learn from it while I've got no shame.