I have a couple of questions for you. With room gain can you predict how much and at what frequencies??

The reason for the question is I seem to getting more low end out of my E-145's than the box programs would predict. Especially at 40Hz where I should be about 10db down. Its a pleasant but rather unexpected surprise. I tried pink noise for 1/3 octave averages and sine sweeps while monitoring the levels on the RTA. They all read about the same are consistant, and confirm what I was hearing which had me scratching my head.

If you know your room gain vs. frequency do any of you take it into account when tuning boxes for your room?? Looks like a way to avoid the boom with a flat box. Any thoughts?? I am wondering if that is what I am seeing.

Rob