I wonder if this has is occurring because of the large range in level differences between my speakers:

fronts + center: +3 DB
Left + Right Surrounds: +14 DB
Subwoofer: -13 DB

The surrounds are higher because they are slightly less efficient and have a weaker amp powering them.

The subwoofer is so low because the 990 is powering it much "hotter" then anything else I have had connected to it. When it was set to full the 990 auto-calibration would actually put the amp into protection mode! Turning it down to half prevented this from occurring, but the 990 said it could not detect a sub (even though it was very loud). Amp is a Crown CE2000 powering a 2 ohm load per channel (about 980 watts per channel).

Rapidfire, do you have a large swing between you min + max channel levels as well?

Arbury