If those of you in the south are worried about the heat shutting down the amps, a couple of the JL lines have "rollback protection". It lowers the peak voltage when it gets to overheating temperatures in order to prevent complete shut off. I copied this from their website ...

"Should a G-Series amplifier ever overheat, its intelligent, unregulated power supply reacts by limiting available peak voltage until the amplifier returns to a safe temperature range. Likewise, if an impedance lower than optimal for the amplifier is present at the outputs, the G-Series amplifier will roll back peak voltage to protect itself without shutting down.

Benefit: The music just keeps on playing."