I wonder what on earth it took to make a hpm 100 woofer "crap out"? They're incredibly robust woofers.
I bought a set a few years ago to play with and when I got them home 1 woofer was seized up tight. I pulled it out and found that the magnet glue had come loose and the magnet had shifted. I was able to pull it apart and reset it. As far as I know it's still going. I'm just one data point but 50% of the HPM-100 woofers I've had were bad.