And for what its worth, the "pull effect" is not as efficient as the air is being pulled from all around the fan based on the pressure gradients it induces. Very little airflow will be induced beyond a few inches from the fan. The "push" is better as the air is more or less directed in a stream across the heatsink. Even better, if it can be arranged, is to mount the fans above the heatsink so they blow air directly across it. Edit: The fan on the inside to draw air into the enclosure is actually the best solution, since its cooling the transformers, output inductors, H-bridge drivers, etc. Parts that rely on just ambient air temperature inside the enclosure to stay cool.

I used a removable push pull fan setup on my dual M4a rack when playing for extended times at carshows, definitely helped a LOT especially given that the rack enclosed the amps, I also mounted non removable fans on the back of the rack to blow though the venting on the rear panel for every day use these were relayed to come on when the amps came on.

I have done this in the past, and it works well to cool the transistors. But, it wont cool the other hot part in the amp: its transformers. Those get real hot, too, due to how lossy they can be. In my old JBL amp, the whole PCB turned black and the transformers melted down despite the case being kept cool to the touch. Class AB amp so its the worst-case scenario, but its worth noting that the H-bridge and PSU transistors are not the only things getting hot, and the outside case temperature does not help the internal components as much. Something to keep in mind that hot weather is still hot weather.

Thank Youuuu! I've been doing it wrong forever!😁👍

I have a problem with overheating with my car engine control unit. Should I install a pc fan? Or server fan? When ECU becomes too hot, the engine stops running. Most of overheating comes when I start to remove the car from one to another place, or in a trafic mess, when there is no wind to cool down ECU. What would you recommend me?

Iv seen car audio enthusiasts even modifying their cars a.c air and ducting pipes to the amps( usually walled off in trunk or back boot area )

Any tips on connecting to aftermarket infotainment android units for cars? The aftermarket android units overheat and usually slows the unit.

You are right I have the old m3 the gray one I bought it I think 2009 it still works fine but I have to up grade my alternator for it the one I have is only 140amp I need a 370 Mac man I'm going to get it some day.

Thanks for the pro tips

How can I wire the fan so it only turns on when the remote signal is given to turn on the amp, anyway to wire a fan using the same remote wire?

Never has a problem til now. 3 different cars all same system and now my amp is overheating 😒 idk what the problem is but imma just blame the LOC since thats the only thing new

Need a way to monitor/display air temp at exhaust from Blower (pressurized finals)

They should make liquid cooled amps

One more thing the pull method will not be as good as push 😉

How do I connect them so when I turn on my amp the fans turn on at the same time ?

Send me a link so I can get one

You not showing how tho, I need to kno how to go it up so it won't constantly run

It's called poor engineering by the amp manufacturer or poor selection on the part of the person specifying the amp. All electronics have a thermal limit and nothing properly designed for an application should require external cooling unless specified in it's manual. If specified up front, at least you know going in that it is required and the device is not designed to work in an environment that is over it's max temp range without external cooling.