Something is wrong with my center channel, but I’m having a hard time reproducing and explaining it to the dealer. My question: are there any common tests anyone can recommend to highlight the problem? Here are the symptoms of my PSB 9C: Lots of sibilance, appearing in greater or lesser levels in all media types (TV/CD/DVD/analog/digital) Sibilance seems worse on digital sources, but exists on all. Using VE pink noise, I get shhhhhh from all other channels (matching PSB stuff), but from the CC I get couhhhhhhhhh What I’ve tried: Hooking CC to a different speaker-out on the receiver=no improvement in CC Hooking a main to the CC-out on the receiver=perfect sound Listening to all CC drivers=all are producing sound Changing wire from Kimber to Monster to 12AWG zip=no change Relevant equipment: Yamaha RX-V2200, Kimber Kable, Panasonic A120 DVD player My dealer already had a listen, and said “sounds alright to me”…but it sounds wrong to me, so I would like to get it fixed while still under warranty…so any thoughts, recommendations or test ideas would be appreciated! Thanks!