Re: how hot is too hot for amps?
I put .75 inch bolt spacers under the mounting feet of both my amps. It really helps a lot. I just installed a relay circuit for a future fan setup to hang under the rear deck to blow straight down on the amps.
Simple SQ System:
Head Unit: Alpine CDA-117
Active Crossover: Cache' CEX
Front Stage Amp: Boston Acoustics GTA-704
Components: Polk Audio DB 6501
Sub Amp: Boston Acoustics GTA-1000m
Sub: JBL P1224, 2.5 ft^3 @ 25 hz enclosure
Rear Fill: Sony Xplod 5.25s on HU power lolz