Audyssey set my 5.1 system with some odd crossovers.

Aud settings: Fronts.....Large.....40hz

Centre.....Small.....60hz

Surrounds..Small.....120hz

I have since changed these settings to "Small" all around with the Fronts crossed at 60hz and the Centre and Surrounds at 80hz which to my ear, sounds better. I also boosted the centre by a couple of Db's as well as the R Surround. As some have noted on other threads, Audyssey will get you in the ballpark, but then you might want to make some further adjustments. Also I agree with other posts here, that surrounds are more there for ambient sound as opposed to the mains.

Half of communication is listening. You can't listen with your mouth.