As far as my calibration goes, Davis S, I have set my reference point at -10 db and trimmed my main speakers to -3db, center to -2db and surrounds to -2db. These numbers seem right considering they are all 10 feet from my listening area and the relative differences in their sensitivitiy listed in my first post. As mentioned in Will's post, maybe it is an ear "training" thing, so I will be doing some heavy listening this weekend to be able to fairly evaluate this piece.