OK, got my subs and hooked them up and I'm very disappointed. Not at the subs, my living room. There is only one place in the whole room that sounds good and that's in a corner. Not any corner, just the one corner

I was very skeptical of the crawling around technique, but it works

The reason I want 2 subs is to fill the room up as much as I can. I have to put both subs in the same corner to take advantage of the 2 sub setup. Don't get me wrong, with the 2 in the corner and I'm sitting in my listening area, the subs slam like crazy

But like I said, slamming in the listening area only is not really what I'm after.
When I first ran the calibration (before I did the crawl thing), I had the subs in the front between the towers; I felt I was lacking. In the front, each sub was about 6ft from on open doorway to anther room. When I did the crawl thing and placed the subs in the corner, I didn't run the calibration. It sounded good but I have a problem. When I turn the volume up on the receiver to -10db, the bass starts dropping off. Now when I turn the volume to around -29db the bass is massive. I tinkered with the crossover on each sub but no change. Should I run the calibration again with the subs in the corner, or is there a setting in the receiver that needs to be adjusted. If its a calibration thing, how do I get the best results. Ex. crossover settings, the volume on the sub high, low, or in the middle, etc.