hey guys, just a heads up about amplifier overheating... amps are sensitive to there mounting position, some way more so than others but most are to some extent... the heat sink is designed to be facing UP, mounting an amp sideways can cause it to overheat way faster that if it was mounted with the heat sink facing up, that could be why it don't overheat with the seat folded down too as I've seen someone mention in this thread... airflow is important, but amp orientation is also important & many don't realize this...
the worse way to mount an amp is upside down, with the heat sink facing down, that will almost always insure an overheating problem if the amp is pushed anywhere close to it's capacity. only mentioning this as I see overheating has been mentioned here a few times... another cause of overheating is driving a total impedance of lower than the amp was designed to run of course, when bridging or running multiple coils to one channel this is something to check & make sure your not wiring it in a way to cause a lower than spec.ed total impedance...