One more comment. I believe as mentioned above, the most common failure mode is the glue bonding the plastic and wires deteriorates. There is another issue to consider, however, and that is corrosion. My MG1's required re-build because the high frequency section was not working. It was not due to amp clipping or overpowering them, I was told by Magnepan that the speakers were internally corroded. This is dependant on storage environment, but it is another consideration.