Question about Jl Audio E1200 Car Audio Amplifier

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500.1 amp power lights blinks on and off

500.1 amp greem light blinks on and off with no sound out of sub

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  • Anonymous Nov 10, 2008

    pwer light blinks on and off

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Try checking the earth it may not be earthing properly if there is paint scrape it off as it wont earth properly with paint there or try a different earth point. The remote wire switches the amp on and off try shorting that and putting 12v through it to keep it on constant just to see if the cd player is not keeping the amp off.

Posted on Apr 08, 2009

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Protection mode; follow this link to get a manual for the amplifier: http://mobile.jlaudio.com/products_amps.php?amp_id=439

Below information is from the manual:

Status Indicator Lights / Protection Circuitry
There are three status indicator lights on the top of the amplifier. These are as follows:1) "Power" (Green): lights to indicate that the amplifier is turned on and operating normally.
2) "Thermal" (Red): lights to indicate that the amplifier has exceeded its safe operating temperature, putting the amplifier into a self-protection mode, which reduces the power output of the amplifier. The red light will shut off and the amplifier will return to normal, full-power operating mode if the heat sink temperature drops back to a safe level.
3) "Low ω" (Amber): lights to indicate that the impedance of the speaker load connected to the amplifier is lower than the optimum impedance load range for the amplifier. When this light is on, a protection circuit engages and reduces the power output of the amplifier. The amber indicator will also light when a short-circuit is detected in the speaker wiring (this can be a short between the positive and negative speaker wires or between either speaker wire and the vehicle chassis).
There is only one condition that will shut down an undamaged 500/1v2 completely… If battery voltage drops below 10 volts, the entire amplifier will shut itself off. The green "Power" indicator on the top of the amplifier will turn off when this occurs. The amplifier will turn back on when voltage climbs back above 10 volts. This may happen in a rapid cycle when bass-heavy program material causes a weak charging system to dip below 10 volts momentarily. If this is happening in your system, have your charging system inspected to make sure it is working properly.
For information on troubleshooting this amplifier, refer to Appendix E (page 21).

Posted on Jul 17, 2008

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1 Answer

Have a jl audio 500/1 the red light blinks and no other light turns on. whats the problem with it?


I think you might have your remote turn on from your deck to amp hooked up wrong check that out!! I not are you familliar with the mr. butterworth crossover JL developed for that series of amp? Just like its big nrother the 1000x1 class D the built in smart crossover has many built in pretect modes. If your subs are drawing to much power it shuts down if they draw to little of ohms or to many but that 500 is 1 ohm stable so download the crossover settings from JL and go from there

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Ok i have a jl500/1v2 amp with 2 w6v2 subs and i haveing a problem dont no if the amp is two much for the subs becouse i turn the amp to get more tump and the subs pop and the yellow light filkes so i turn...


its real simple. your under powered.

your W6s RMS at 500 watts EACH and your sending em 250RMS (half what they need)
The 'pop' your hearing is the failure to supply enough power to draw the cone back in time and collides with the next wave of sound.

prove it?
drive a single W6 with your 500/1 bridged.
i'll bet your pop goes away.

long term, get another 500/1 or jump up to a 1000/1v2.

I also HIGHLY recommend JL's in-line audio cleaner. If i recall it was like 60 bucks but waaaay worth it. makes sure that theres no distortion in the source input to your amp(s), which...keeps your subs from trying to reproduce transients and delivers only clear signal to your subs void of all clipping signals. Its an active electronic compoent.


PS: if you are pushing 12W6's, i had the same setup once...I had W3s connected to my 500/1 and upgraded to the W6s...had the same issue your describing, and then got the 1000/1. happy ending.

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The green light and protection light on my 1100d constantly blink and the interior lights in my car blink in sequence with the lights on the amp and I get no sound out of the amp and sub setup. What could...


Sounds like you have an issue with the amp, the install, or possible blown subs.. check, test and if all else fails get the amp serviced or get a new amp.
A good car audio shop can also help you check it over.

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Red and blue light flash on and off


ITS IN PROTECT MODE. EITHER ITS BLOWN OR THE SUB IS TRYING TO PULL TOO MUCH POWER. UNHOOK THE SUB AND SEE WHAT HAPPENS IF THE LIGHTS STILL BLINK THEN AMP IS BLOWN. IF THEY STOP BLINKING AND ONLY ONE STAYS ON THEN LOWER THE SETTINGS ON THE AMP AND TURN THE BASS AND VOLUME DOWN ON THE DECK TO LOWER THE AMOUNT OF POWER BEING PULLED FROM THE AMP.

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Power light on, no sound through sub, I'm reading high ohm output


Contact Eric @ Capital Audio & Electronics Repair 850-339-1130 we repair all name brands & all models Located in Tallahassee,Fl

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1 Answer

My Jl Audio 500/1, power light comes on but no power to subs


maybe it dont have enough to push it ,,did you try it before you buy it?

Mar 01, 2010 | Jl Audio 500/1 Car Audio Amplifier

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Jl 500/1


Nine times out of ten if the amp smells burnt it usuallly is. Your best bet is to hook another amp to your system and see if you get sound.

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1 Answer

Jl 500/1 no sound, green light


This is an indication that the MOSFETs are ok but the driver stages may have a problem. Get a schematic find the pre-amp stages and test the voltages levels there as compared to the schematic. I do believe that you will find the problem in the pre-driver pre-amp atages.

Sep 03, 2007 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

No sound


as u have speakers with u u connect another speaker in to the sub connection and reduce the volume to min and check if sound is coming use another wire to connect the speaker to the amp and if it is working u check the cable then the sub it would have burned off due to some internal problems and it has to be checked by a technician this problem may be due to wire broken or something like that

Jul 03, 2007 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Flickering power light


Does your amp get hot enough to cook an egg on?? Because I had this same problem but it wasn't a good make amp, and what the actual problem was is that the amp was not big enough to support the sub I had on it! Check the heat of the amp and maybe move it to a place where it gets more air and also check the watts on your sub and the power output on your amp.

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