I just got a pair of Weber speakers, a 12A150B and a 12F150B. An alnico and a ceramic with British-style cones. They sound great, but I'm getting a little buzzing from, I think, the alnico when pushed hard. It's not severe and I don't notice it with the band. But it would get picked up during a recording sessoin. I've checked my cab over and nothing seems to be loose. I only hear the buzz coming from the front of the amp. From the back, it sounds great. Ted broke the speakers in a little and I got moderate doping. Anyone else have a similar problem? Other than that little bit of buzz, the speakers sound fantastic.