I am nearly finished building my amp rack but recently read quite a few things about amps getting hot and going into thermal protection and got me thinking. I know there is very little airflow if any over my amps due to how my amp rack is setup and the amps being right behind the back seat. Has anyone added fans to their amps to try and keep them cool, any tips on how to go about doing this? I was wondering about maybe removing the bottom cover and just aiming a fan like a 80mm or 120mm computer case fan at the innards of the amp, or maybe machining the bottom cover to hold an exhaust fan inside the amp. I figured I could wire them up with a relay off the remote turn on lead and just let them come on when the amps turn on. Here is a picture of the amp rack, its got a 100.4 on the left a 1500D on the right and a computer setup in the middle behind the 120mm fan with the crossovers up top. This will be going behind the back seat in my truck and will get pretty much zero air flow, there is a small gap of about 1/4" on the top and bottom of the amps to allow some breathing of the heat sink but I am thinking it won't be enough. The 1500D will most likely only be wired down to 2ohm for a pair of mags so it won't need to work hard but I would like to keep things cool just incase I change substages and wire it down lower, or a really hot day comes along.