She was ok at -15db (120watts RMS for 48 seconds) , but at -12db (240watts RMS for 60seconds) the dust cap started to deform.
At -10db (800watts RMS for 19 seconds) she was starting to get stinky and rips in the dust cap occurred. I had to abort because of the smell, but she was just moments away from flames when I hit the stop button.
I think I even saw the level burst up to 3000watts for an instant there.
I have my iTech on a 40amp breaker at 240v, so the party was just getting started.
In any case, now you know how much xmax you can get from it before it becomes permanently damaged.
"If Bad Sound Were Fatal, Audio Would Be the Leading Cause of Death."