Sorry for all the duplicates, I'm just getting to know how this all works. And I was a bit harsh. From what I remember, we had a Levinson 433 on the front/center (theater system, obviously) and 2 432s driving the sides and rears. Not that I liked those amps (at all), but they did have some giddyup. One of the guys there has a particularly heavy hand on the volume control, and although I didn't witness it happen, I did see the results. The voice coils were almost completely torn off the cones, hanging by pieces of pulp. I was suprised, for sure, and he was, needless to say, "reprimanded". It was some pretty dynamic stuff he was playing, and just hearing it from afar it was pretty obvious the woofers weren't having a good time. It did surprise me though, that they suffered as bad as they did; and they did seem somewhat underbuilt considering the level of the speaker. Anyway, we did monitor his listening habits after that, and it didn't happen again. As with anything, if you try to destroy it, you'll probably succeed.