Axiom Home Page Forums General Discussion Technical Questions Where is the weak link?

I just purchased a set of axioms, 80's, a 150, and M22's. I love the sound, however, my tweeters buzz like there are 200 bees inside them, even when the receiver is muted at -64 dB's. I am running a parasound 855A amp, with bettercable interconnects. I am using an HK AVR45 as a preamp. The speakers don't buzz when I run the wire directly to the receiver. Where am I going wrong here? I don't feel as though any of my components are exactly cheap... The speakers I was running before in the same exact configuration did not buzz like this.