I had a Black series 12 for close to 3 years that was powered by a Kicker KX400.1 at 2 ohm. Loved it. My friend borrowed it while his shit was being warranted by Harmon Kardon, and someone messed with the amp (I told him it was set where it should be, and he doesn't trust anyone else with his stereo, so yeah, I know it wasn't him) and turned the gain up all the way, the Bass Boost on the amp all the way, and turned the crossover up to like 150hz. It died a painful death, I took it apart yesterday (which I've been meaning to do for a while now) and it's black all the way down on the outside coil except for the very bottom, which is still partially copper.
It took that power and abuse for a week, according to Wabi. Not bad for a sub that I paid 30 shipped for.
Kef