Question about Jl Audio 1000/1 Car Audio Amplifier

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Jl amp hi and thanks i have the right power going in to the amp but when i put the remote lead in it drops down to about 5 v it was working fine and then just stoped

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If the power supply feeding the amp is OK, it should have blown the fuse well before the voltage dropped to 5v. What size/type fuse do you have in the power wire feeding the amp?


Posted on Aug 11, 2008

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Main power and remote lead are both ~12v but when connnected to the amp, main power drops to ~2v while remote lead remains ~12v. the amp got tested and its good. whats wrong?


Due to the power required for most amp's, Most people place either an second battery in the boot of the car or fit Capacitor (power cap)
Which will then allow amp to consume the required power without making main power for the car drop.

Aug 11, 2010 | Jl Audio Class D E1400D Car Audio...

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Amp comes on then shuts down JL 500/1


what do you have hooked up to it? Subs, Speaker, so on. it sounds like it is going into protection because of improper wiring... or it was improperly wired. if it is malfunctioning you need to take it to an authorized JL audio dealer. It's going to cost some cash unless you have a warranty on it and it was installed by a liscensed technician.

May 31, 2010 | Jl Audio 500/1 Car Audio Amplifier

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Disconnect all speaker wires from the amp and disconnect the RCA cables from the amp. If it still goes into protect mode, use a multimeter to confirm that you have 12v on the B+ and remote terminals. Place the black meter probe on the ground terminal of the amp when measuring the voltage. If the voltage is sufficient and the amp goes into protect, it will have to be repaired. JL only accepts repairs from authorized dealers. You'll have to find one in your area or you'll have to find a repair shop willing to work on JL amps.

Let me know if you have any other questions.

Oct 15, 2008 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

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The amp may have blown output transistors and that's why the voltage is being pulled down so far. This should have blown the fuse. If you're using an AGU fuse or there is corrosion, these could also cause the voltage to drop.

Measure the voltage across the fuse holder when you turn the amp on. If the voltage is more than 2v, replace the fuse.

Aug 11, 2008 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

2000 watt jl audio amp & car battery...


Make sure that you don't have any strands that would connect the remote lead to the constant +12 volts. Also make sure that your remote lead fromt the radio switches off when you shut the car off. If you don't have an aftermarket radio with a remote turn-on lead, tap into the ignition wire to the radio. Let me know what kind of car you have and I can point you in the right direction to get the right wire. Good luck.
-Andrew Hawkins

Apr 08, 2008 | Jl Audio 1000/1 Car Audio Amplifier

2 Answers

Jl amp


With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead to the B+ terminal of the amp. If the voltage drops below ~11 volts, you need to check the wiring for the B+ line to see where you're losing voltage..

You need to do this as the amp shuts down. Connect the meter and watch the voltage as someone increases the volume.

Dec 31, 2007 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Protection Mode? amp wont start


With your multimeter set to DC volts and the black meter lead on the ground terminal of the amp, touch the red lead alternately to the B+ and remote terminals as the amp shuts down. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever line is dropping too low.


If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

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500/5


is there any sound?

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Amlifier not working


connect your remote turn on and your problem will be solved

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