Originally posted by RedSVT:
Are you mounting your amps upside down? Shame on you! 
Ditto.
Some amps fry from upside down mounting, some don't.
It depends on how the amp is set up internally for heat dissipation, how much heat the amp produces (some much, much more than others), and your load (lower impedence load = more heat produced).
Sorry to hear 'bout your "loss", though. Luckily, you've got some ways to get it replaced.
