Well, here's an update.

I got my Carver amp out and put it in place of the Rotel. The Carver is much warmer and now there is no need for a seperate tweeter adjustment. With the Carver there is just no need to cut the tweeter down. I don't know..for some reason the Rotel is very harsh with the 990.

So now the Rotel will be used for Zone 2 and some Aura Bass Shakers and the Carver is going to drive my center and surrounds. As funds come available, a 7500 will be on my list. I want those balanced inputs, and if it's as warm (hopefully even warmer) than my trusty old Carver it will be a keeper