JL Audio amp overheating

[matt14]

The thing shut off two days ago. It was hot as hell. Like two second remove hand touch. Another guy suggest a cooling fan but this thing is getting hot as hell. The truck is in the shop now till Monday but I will check all suggested.

Thanks

Where are you located? Is someone lives near you, they can either suggest a good shop or if they feel comfortable with car audio, diagnose themselves.

 

[hulk161]

In Chicago, Southside.

 

[matt14]

Search chicago and see if there are anyone around here that can give you a hand with this.

 

[HMFDZ28]

I would deff guess to venture its an issue with the wiring to the sub or the sub itself not matching. We run into this issue at work when customers try and add external speakers that are not the correct match to the radio and the Audio drivers burn up. Granted I am comparing Two-way radios but simmilar theory.

 

[hulk161]

Yea I'm gonna go to a shop on the northside that did a install for me before. They are pretty cool so we will see. I will post their response later today.

 

[01TX_Tahoe]

its gotta be a wiring issue or maybe they sold u a refurb amp... JL amps shouldn't be overheating that often..

 

[hulk161]

Well went to a different shop today. They checked the wiring and the ohms. The guy told me that its true what the other guy said its the heat. He said that this is common so he talked me into putting a fan on the amp. They said that this possibly will help. I banged the sounds coming from there and then home from the gym and no shutting off so far. They told me they let it bang in the shop for about thirty mins and it did get hot as hell so we will see. This is a higher end shop near downtown Chicago so I somewhat trust their opinion but he did warn me if it does shut down again let it cool off to prevent burning the thing out. At this point what else is there to do?

What do you guys think?

 

[Eagle]

I think it is wired at too low an ohm load, or you have the gains/boost too high to make it "bang" instead of play music. Or you are just simply playing the headunit too loud and inducing clipping that way.

Clipping will heat one up FAST. music will not.

If you turn the gain/volume down, your problems will disappear.

 

[hulk161]

I really dont blast it like that bro. I think all people play their music or Bang!! every once in a while and I am in that category. I'm 37 little to old to have the 1000 Mosquito sound in the trunk. Like I said before when it is loud its at 15 or 16 never any louder.

 

[Eagle]

the actual DB output has only a modest amount to do with it. I've seen people overheat amps without it being 'loud'. i;ve done it myself.

I overdrove the shit out of my old fosgate 125.2 between the bass eq and the level adjsutment on the xover. I could cook on it, but it still wasn;t super loud. In retrospect i should have gotten a 250.2 but I chose it because i had little room for anything larger and i made it work with ducted fan cooling.

in your case you said it is a 500 watt JL. which 500 watt JL?
is it a slash series?

what is the impedance of your subs as they are connected to the amp?

what is your amp sensitivity like? maximum?
headunit bass is at 0, or maxed out?
15 or 16 on the head unit means absolutely squat.
you could be overdriving the hell out of the amp at 1/3 volume if the gain was set up too high.

I still think you have way to much eq or gain somewhere.

try using it at 12 or 13 on the head, I bet the amp runs a LOT cooler. if so you have too much total gain.