What version of Audyssey? Previous versions left me unhappy at times with other speakers, but XT32 does a great job IMO.
As far as the sub, if Audyssey has it set at +1 now, I'd not go to +11 (+10db) at this point. You need audyssey to initially set the sub around -7 to -10db upon completion, so when you boost you are around 0.0 in the AVR menu.
Both my VTF15's are set around 9 oclock, and when Audyssye completes they are around -7.5 in the menu. I then go in and adjust to +2.5.
The 10db boost comes straight from Chad B, who is calibrates both video and audio, and does Audyssey pro calibrations. Ive been so much more happy since boosting 10 db's.
65E6P / 65EF9500 / DMP-UB900
AV7702II / Outlaw 7125
RF7II's / RC64II / Dual FV15HP's