walkingawire

I've got a pair of RF-7 III's, an RC-64 III, and a R-12SW hooked up to a Denon AVR-720W. I'm not sure if I am crazy/paranoid or not, since I just got these amazing speakers. But I feel like I can hear some slight distortion in the tweeters during classical/piano songs that I don't typically hear during other types of music. Is there something i can do to troubleshoot / test this more? I