Hutzal, to get my 600 at 75dB' on the meter, the gain in the sub as to be at a min. with the receiver on about -6dB. There is no way I could use +10, unless you want me to blow out all my windows, that would be like 100+dB's or more.
Tom, Yes, I have tried nearfield, next to the seating area, and currently I moved it to the back wall next to the walkout doors, this is crazy.
Well, as long as you have a camera present, I think blowing out your windows would be quite fun! That is so strange about Denon's. On my Yamaha, I am able to set the DB level of the whole system (the main volume) prior to calibration. It isn't a set volume, I didn't really see how it would be a problem, but now I can see in your case Randy, that the Denon's calibration set volume can be a bad thing.