buzzing aroudn the dustcap hrmm?? same sound one of my 9512's had...and it needed to be reconed due to it...rubbing coils ftw?he got it from me and it played fine with 1000 watts. It just had a buzzing sound around the carbon fiber dustcap which I read post about there being a sound like this. But other tan that it plays like a champ. The reason for me selling it was because I was getting rid of a lot off my stuff, DD3512, rl-p, MTX 1000D, at the time.http://www.caraudio.com/forum/showthread.php?t=103919&highlight=carbon+fiber+digital
But the sound is so minimal when in the trunk you can not hear it.