Amp getting stupidly hot.

[hellastock_rsx]

I got a Rockford Fosgate P1000x2 amp bridged to two 10" 4ohm Fosgate P3s getting 1000watt rms. Well I've had this setup for a while now and the amp has gotten warm but but not actually "hot". I decided to get a 250 amp high output alternator then on my way home from work today I started noticing my subs were clipping then they shut off. Well once I got home I felt my amp and it was so hot it actually burned if I held my hand on it for too long. So I'm just wondering why all of a sudden my amp is getting super hot. The way I have the wires ran is:

4aug wire going from alternator to battery plus stock wiring.

1/0aug wire going from battery to 1 fared cap.

4aug wire going from cap to amp.

I have a 4aug ground going to the cap from the amp then a 1/0aug from the cap to under my back seat and put 2 self tapping screws into it on the chassis. Its kinda grounded down but its not really 100% bare.

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[Boomin_tahoe 5,000+ posts]

So many things wrong I read.....Ground is so important, that some amps won't turn on or function properly with a "ok" ground. It needs to be bare metal to metal, no paint at all.

How do you know your subs were clipping? How was/is the gain set on the amp?

What kind of wire is the 4 and 1/0 gauge? Yes it does matter because there's ****** wiring on the market then there's good stuff. OFC is the best, CCA is the worst. Actually, no name branded CCA is the worst.

 

[Popwarhomie 5,000+ posts]

How are the subs wired? Serious/Parallel for a 4ohm load?

CCA wire is absolutely fine to use. If you are pulling under 250 amps CCA 1/0 is more than fine(20 foot amperage rating). If over 250 amps yes you are going to want OFC with a higher amperage rating.

I ran CCA 1/0 for years on lower powered setups and ran 2 runs of CCA 1/0 on 4.5k rms.

Fuse rating for that amp is 160 amps. So 1/0 CCA or 4 gauge OFC.

 

[My63bug]

Cca is susceptible to corrosion i used it my 1st go around and it corroded at every cut end.especially in the fuse holder. so i pulled and replaced. Could have been due to a older battery at the time. But after i put in the ofc it stopped with the same batt. My experience anyhow

 

[wew lad 5,000+ posts]

i think your best troubleshooting step is to find out where your voltage is dropping, is the voltage the same at your amp inputs at your alternator/front battery when loaded down? find out why, is it a bad ground, need to add more? bad connections on your positive runs? some sand paper and proper wiring i think will be your solution, as well as ensuring you're not overly clipping the amp

 

[JerryLtowIt]

Ground is so important, that some amps won't turn on or function properly with a "ok" ground. It needs to be bare metal to metal, no paint at all.

How was/is the gain set on the amp?

[emoji1369]this....

Chekit

://youtu.be/zeA4Scp1VAE

://youtu.be/6b_Tw_dUESo

A couple of self tapping screws is not ok...(not in my car) you spend some much time and $ for the install, why skimp out and hook up a cheesy *** ground?? It's well worth the extra time.

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[BOOMINGRANDPA 5,000+ posts]

sounds like he running at at 2 ohm bridged load to me.. run 1 channel per sub u will see it stays cooler i bet.. u need mono amp.. all that said yeah check ground..

 

[Wellyboy]

The problem is quite simple.. The amp supplies 1000rms. The subs are asking for 1000rms... That amp is just about meeting demands with no room to breath or remain cool.

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[Boomin_tahoe 5,000+ posts]

The problem is quite simple.. The amp supplies 1000rms. The subs are asking for 1000rms... That amp is just about meeting demands with no room to breath or remain cool.
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uh what? That's not the issue here.....I could send 200 rms watts to a sub that's capable of 1250 rms and if my amp was getting hot, there's a problem.

 

[Popwarhomie 5,000+ posts]

The problem is quite simple.. The amp supplies 1000rms. The subs are asking for 1000rms... That amp is just about meeting demands with no room to breath or remain cool.
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No.

 

[Wellyboy]

Yeah but this has happened to me b4.. Running 2 sub equal to what the amp gives an it gets hot quick.. Removed one an it ran cool.

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[Wellyboy]

Someone on here told me, I can't remember who it was, advised that try used an amp with 20% more power than what the sub asks for to keep the amp cool/warm.

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[Wellyboy]

An BTW tahoe, you were in the chat room when I was advised that.

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[Hertz Mafia]

Take the fraud cap out

Get a real ground and not self tap screws

Check voltage

Report back //content.invisioncic.com/y282845/emoticons/graduate.gif.d982460be9f153bb54e5d4cb744f6ae8.gif

 

[Hertz Mafia]

Yeah but this has happened to me b4.. Running 2 sub equal to what the amp gives an it gets hot quick.. Removed one an it ran cool.
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That's dumb. I ran a 1000watt Memphis amp to my 4 2500rms woofers and it never got hot and shut off.