[NoiSeeVT]

How hot is hot? The only spec on the sub that is crucial here is the impedence. If the sub is 4 ohm and the amp is bridgeablke to that then you are ok. All the wattage figures are not as important as long as the the RMS power of the amp is not exceeding that of the sub. The amp if too hot should shut off and go into protect mode. Remember the heat sink is there to absorb heat so it will get hot. Contact Kenwood or a dealer and they will be able to tell you the temp at whcih the amp will shut it self down. My Phoenix Gold Heat sink is warm just from being in the car when its 35 degrees outside. Most amps will run hot to the touch especially in this weather even after a short burst of play.

David