Hey folks. Here's the plot. I had a Celestion Gold G10 (10" 8ohm 40w) speaker that I had used in a cabinet with my THD Flexi 50 which I never ran above bedroom levels. I never noticed anything abnormal with it, just got bored and sold the speaker on Craigslist. The guy I sold it to contacted me shortly after and said there is a buzzing/minor crunching/static sound on the decay side of low E and A strings when played. I couldn't believe it but he was right. He was running two Princeton Reverb 68 Customs. I put the speaker in my cab that I brought to his house and played both amps separately through the speaker and sure enough, what he described was occurring-- both amps produced this sound. This is a relatively new speaker but I bought it used so I can't simply return it or have it replaced. Does anyone have any idea as to what the problem is? It was definitely not a vibration issue and it seemed to be coming directly from the speaker.