Okay, I bought a Roccaforte Jenelle a couple of weeks ago. Some things went screwy for a little bit and I didn't get to try it at rehearsal until this Wednesday. So, I get to rehearsal, throw it on my cab and get ready to rock. Half way through the first song, I notice that the amp is vibrating across the cab. It almost fell on the floor. Now, I'm not even running the bass that high or anything unusual. It sounds great, it just seems like perhaps something in the Jenelle circuit is hitting the resonant frequency of my cab. Does that sound remotely possible? I was running a Splawn Nitro with no issues like this.