Question about Jl Audio 1000/1 Car Audio Amplifier

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JL Audio 1000/1 power LED is On But no Sound

I had a JL Audio 1000/1 Class D amp driving a JL W7 13" Sub and never had the full power from my car to feed it probley so when turning the voulme up the amp used to switch off for 5sec and then back on and thats becouse of a low voltage going to the amp , So i've upgraded my battery to an optima battery and after 5min of listing to music on load volume it kepting switching off and then back on (same problem as before) then it just stop working..i've checked the power on the amp and it seems to ok as the lights on the LED is on. When i put my ear close to the sub i hear the music but very low and unclear and cracking noise. i've tried a different sub but same problem. i've took my amp to a repair centre but they couldn't fix it and they said to me that the power supply is working ok. the amp cost me alot of money and i really appreciate any help or if you could pin-point out the problem and i'll try to fix it myself as am good in electrnoics but but not the best. Kind Regards

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  • playboy_joe Dec 02, 2007

    I have the same problem. My amp comes on and it is working but all i get is a scratchy sound and u can barely hear it. It worked fine for awhile and then just quit one day. I took the back off and found no problems. If someone can help me with this problem that would be really awsome.



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Lol. lol. lol. he said ROCKER FOSGATE and 50 FARIT.....

Posted on Jul 04, 2008

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I have 2 system of JL 1000/1 and 2 13" subs u just need 2 get the highest alternator for your car and a I have 50 farit a rocker fosgate capacitor. I have not had a problem since. any ? just email. p.s. 1 car is a neon

Posted on Jan 17, 2008


I don't know if it's the same problem as yours but I have a 500/1 that after a few weeks decided to shut off by itself yet the power light remains on. If I cycle the power to it by removing the fuse I have right before it then putting it back in it will work for a short time then shut off again.

I have a thread about the problem over at DIYMA. Here is the link...

Posted on Jan 02, 2008

My amp did same shit, its the rca cabbles, check them out at the back of the head unit. the input jack is probably bad on the head unit

Posted on Aug 08, 2007

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2 Answers

I looked up the correct way to wire my JL 13.5W7 1.5. Therefore it said to wire it in parrallel. I understand this will put it at .75 ohm. As I start to turn it up it sounds great, very loud but once the...

1000/1v2 Class D Monoblock Subwoofer Amplifier Specifications:

Rated Power:
1000 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)

THD at Rated Power:
<0.05% @ 4 ohm

S/N Ratio:
>95dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)

Frequency Response:
5 Hz - 250 Hz (+0, -1dB)

Damping Factor:
>500 @ 4 ohm / 50 Hz

According to the chart your amp is only stable down to 1.5 Ohms, so running at .75 Ohms the noise you are hearing is the amp clipping (running more power than it can handle at low ohms)
I would suggest wiring it in series, or you could adjust the gain on the amp until the popping goes away.

Hope this helps.

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ok if u have a radio with sub controll make sure its on an make sure that you have the gain bassboost turned up an if it has a crossover switch make that its on

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you dont want to connect both of those amplifiers together. You could run them separately to separate subs or the jl to your sub and your alpine to your front speakers. But you dont ever want to mix and match amps to the same sub. Even if you had 2 jl500/1's you wouldnt want to just hook them up together. Because they both have to be putting out the exact same amount of power. Which no 2 amps are ever exactly the same. Some companies make bridges to properly connect 2 exact amps together. I Hooked up 2 JL 1000/1's to each voice coil on a 13.5 W7 and i smoked the sub. So i definitely dont reccommend doing it unless the amps are conneccted to separate things.

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Recomend installing a capacitor, this will control voltage drop and reduce heat. The new battery should help, but it also may be that the amps final circuts could be wearing out, and no longer able to handle the load of the sub.

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Hello drsubhakar26,

JL W6's will perform well with from 150-600 watts RMS. W7's with from 150-500 watts. Less expensive Alpine Type R's work OK with from 200-500 watts RMS. Either of the brands will sound good. None of them will perform to their full potential with 300 watts RMS. Powering any sub with a 2-channel amp is a compromise. A monoblock is more efficient.

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Will a JL audio 1000/1 amp run a orion HCCA 15

Hello evopower,

The JL 1000/1 will power the Orion HCCA OK.

It is stable only to 1.5 ohms so your best choice would be the 15.4 with dual 4ohm voice coils. In parallel, this would offer a 2ohm impedance. The 15.2 could only be wired for either a 1ohm load (too low) or a 4ohm load (less power).

Hope this helps.

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1 Answer

Jl audio 1000/1 low voltage -keeps shutting off at high volume

You should definitely upgrade the power wire to the sub amp to 4 gauge -absolutely your choking your amp its starving for current-poor thing is starving !!!!!!!

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Jl audio amp 1000/1 fix


Dec 22, 2008 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

Sub does not operate

There could be many issues, from fuses in your amp, to power getting to your amps, to "low" impedance on your amp, and the circuit shutting down. Or it could even be your head unit, perhaps there is a setting on the HU that turns ON/OFF the subwoofer. BTW, you are running to low of an impedance on that amp. If my memory serves me correct, the lowest impedance that they JL Audio recommends is 1.5 Ohms.

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