well matched setup but amp is overheating

So it's a Rockford Fosgate Prime R500-1 500w rms @2ohm amp (2 ohm stable) and a RF P3D4-12. that's a 12in dual 4ohm voice coil P3 rated at 600watts RMS. the sub is wired down to 2 ohms. customer is complaining about amp continuously over heating and going into protect mode. gain is set properly. amp is mounted to the back of his box, had him turn the box side ways in his trunk to let it get more air and he said it still happens why is the amp over heating? what can i do to help fix it

voltage drop, to the back somehow? if its not over-gained id be looking at the temp of the ground point where its grounded to the chasis, maybe the trunk is just too hot for the amp, amp fan !!1000 watts of lp, now need sum hp an mids

I would make sure you have a good power and ground connection and monitor the voltage at the amp.

I have 2 RF Prime amps and they both get hot a hell bout to hook some fans up. I didnt realize that the Prime amps were maid in China  till after a bought them. ( I got a deal and now I WHY) They still make what I got set up sound great, but they do get HOT.This is my 1st post by the way.dont hate

Make sure you have enough voltage at the amps, if less than 12 volts at the amp while the system is on, check wires and altenator output.

maybe i can talk him into upgrading to the punch 500watt amp. anyways you're saying lower voltage can cause it to overheat?

Lower voltage means higher current(for hi power amps), and since heat is proportional to current-squared - ie, Amps x Amps, 20% more current means 40% more heat. (IE - 12V is ~20% less than 14.4V. Or more accurately, 14.4/12 = 1.2 (times the current); 1.2 x 1.2 = 1.4 (times the heat).)

This might sound crazy but I have a volt meter but dont  know how to use it. Can someone explain plz.dont hate

Thanksdont hate