Question about Jl Audio 300/4 Car Audio Amplifier

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Jl audio amp blink low voltage then power over and over.

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Had the same problem once from a very poor ground connection.

showed 12V across multimeter, but could not deliver any real power across the connection due to poor grounding.

check it.

Posted on May 09, 2011

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I have a jl audio 1000/1v2 my probem is the low volt ligth blinking and dosen t work wath shut I do


The low voltage light would indicate that there is not enough power reaching the amplifier through the power wire. Are you using 4awg or bigger wire? Is the amp grounded well? Does this happen all the time or just at high volume?

Try checking your power and ground connections and ensure that you are using the correct size of wire.

Mar 11, 2011 | Jl Audio 1000/1V2 Car Amp

4 Answers

I have a jl 10001, when i turn it up its cutting off saying low voltage. I'm running 4 guage wire do i need to go bigger?


Try using a capacitor and make sure you have a fused (+) directly to the battery post that is routed as short as possible. Ground wire should be short enough from a clear and clean body part. Try lowering down your output gain so it won't clip the system.

Jun 11, 2010 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

Low voltage light on


is not gettin enough power
low volt light on

Jun 01, 2010 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

My amp only powers on it gives no power to my subwoofers


1st check to see if the RCA's are plugged in if they are make sure the speakers are plugged in. Check at the amp and at the sub Alson check the input voltage switch. JL Audio Slash series amps have a high/low switch for your input voltage. And the last thing I can think of is if your using a remote wire to turn the amp in make sure the signal sensing switch is off. If your not using a remote wire turn it on....Hope this helps

Mar 29, 2010 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Green power light on JL Audio 500/1 but no output


Its the power transistors that would be affected by low voltage. It delivered till it finally gave up 'cos the output wattage to be generated at low voltage means more current flowing through the equipment. This high current will adversely affect all small solenoid valves & transistors and IC's. Even failure of one section of any IC is rarely detectable with the naked eye. It has to be thoroughly checked with a multi-meter to assess the damage correctly......sodeep

Jul 30, 2009 | Jl Audio 500/1 Car Audio Amplifier

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 !!!!!!!

Apr 16, 2009 | Jl Audio 1000/1 Car Audio Amplifier

2 Answers

Green light blinks slowly on my JL Audio 300/4 amp


Check your fuse at the battery. While AGU glass fuses "look" good, when you read the voltage AFTER the fuse, you can only be getting 5 volts or so. I can't tell you how many times I have seen this.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html

Jan 27, 2009 | Jl Audio 300/4 Car Audio Amplifier

2 Answers

JL 300/2 v2 Power Light Blinks, No sound out of Sub. Works in friends Car HELP


Are you sure you don't have any shorted wiring or defective speakers?


Sep 30, 2008 | Jl Audio 300/2 Car Audio Amplifier

2 Answers

Power issue


Hello highs31 Ok this is a common problem and the fix is quite easy. even though you may not want to hear it. Here it goes: Your amplifier is drawing more current then your alternator can put out and more then your voltage regulator can control. This means that you must and I repeat must add another battery, alternator, and voltage regulator for your sound system. adding these components will eliminate your problems. That is the long and the short of it. I hope this helps, Thank you, Shuttle83

Oct 09, 2007 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

Help


JL amps are somewhat sensitive to low voltage. Everything has to be perfect in the power supply feeding the amp. I'll assume that you have large enough wire. Check the owner's manual on the JL site. They likely recommend 4g or larger. You need to measure the voltage across the B+ and ground terminals of the amp. If it's dropping below ~11v when you turn the volume up, you need to determine why. Make the same measurements at the battery terminals. If there is significantly less voltage drop there when the volume is increased, check all of the points in the circuit where there could be a bad connection. Look for corrosion, over-heated connection on fuses or at the battery and make sure the fuse is in good physical condition. Some types tend to overheat and melt. If everything looks OK, begin measuring the voltage at each point where there is any sort of connector. If for example, you get a significant difference in the voltage on each side of the fuse, the fuse, the holder or the connections to the holder may be defective.

Oct 04, 2007 | Jl Audio 1000/1 Car Audio Amplifier

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