Surround Amplifier: What do you use?

Yep, that was it! I dropped the over all level of the master out to -10 with a limiter on it and the problem was resolved. I think I’m going to just dump the receiver and pick up a JBL matched set. Anybody heard the 2300 series?
http://www2.jblpro.com/catalog/General/ProductFamily.aspx?FId=73&MId=5