2013 G23 stereo amp overheating

[VegasG23]

Looking for a solution as the stereo amps constantly overheat and shut down in my '13 G23. I've installed a cooling fan for each amp, that has helped a little, but has not solved the problem. Any advice would be appreciated. thanks!

[vision]

If they are overheating it usually means you have too little resistance/too much out going amperage to the speakers. How are your speakers wired and was the wiring/speakers changed prior to the over heating issue starting?

[VegasG23]

I'm the 2nd owner, but I believe eveything is stock from Nautique. It only has 2 tower speakers. There have been no changes to the system. However, the problem seems much worse this summer vs. last. Thanks for your help.

[nyryan2001]

The Polk OEM Amps are fairly high quality Class Ds. I've never heard of them overheating in stock wiring configuration. I've had the same stereo as you in my 2013, in similar 120deg ambient Oklahoma temps. No issues ever.

The first step I'd reccomend is an easy one. Get a regular multimeter that will measure ohms. Remove the speaker wires from the amp terminals and ensure no pair of speaker wires that leads to any set of speakers is lower than 2 ohms.

[VegasG23]

Thanks Ryan! I will start there.

[MLA]

Looking for a solution as the stereo amps constantly overheat and shut down in my '13 G23. I've installed a cooling fan for each amp, that has helped a little, but has not solved the problem. Any advice would be appreciated. thanks!

Unless the amps in question are driving identical loads at the same volume, then 2 or more amps shutting down, cutting out, etc, odds are, its not an overheating issue. When the issue is present, exactly what does the amp due, power off and for how long before returning to service or does it display its trouble light? How long the music stops and if it returns to service on its own, helps alot here.

In a lot of cases, 2 or amps acting comes down to battery voltage.

My opinion of the Polk amps, which share the same foundation as 3-4 other price point amps, if different from others. The are kind of light on heat sink mass for the wattage they deliver. With all chnls loaded down to its min impedance and driven hard, I could see them going into thermal shut down in the vegas heat.

Are your fans bring in fresh air or simply blowing the hot ambient air right back across the amps? A ceiling fan makes us feel cooler, but it doesnt work for amps. They need fresh are thats actually cooler then the air around the amp. This usually requires custom shrouds and ducting.

[VegasG23]

Thanks for your response MLA, I will check the output from the amps to the speakers as you and others have suggested. My batteries are in good shape so I dont think its a low voltage issue. It has to be heat related because while it's in the shop the amps dont shout down after I installed the fans. Your point on proper ventilation is well taken, I really think that's my next step if we determine the amps are wired and functioning properly.
When they shut down the music stops and the blue power light on the amps goes off. I usually shut everything off at the point, open the seat/door to the ski locker and allow them to cool for 20 minutes. Then everything will fire back up as normal. It was 110 degrees last weekend at Lake Mead, who knows how warm it was inside the ski locker.