Question about JBL Car Audio & Video

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I have buy JBL four way channel amplifier 3 months before. Nearly 2 times my amplifier is not working. Red light is glowing even wen ma car is in off conditions and amplifier is not working. help me

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  • 104 Answers

Hi, Looks your amp has gone into "protect" mode, the first thing I would check is the fuse, should be under the bonnet (hood) about 15 cm's (6" or so) from the battery. I've found a couple of sites that may be able to help with your problem.
1. > How to Troubleshoot Dead Sub Amplifier Car Audio
2. > Amp in Protection Troubleshooting
Trust this helps, regards Alan.

Posted on Apr 12, 2015

  • Anonymous Apr 12, 2015

    I kept maximum volume and heard songs for half hour it may affect amplifier??

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

sparky1500
  • 1066 Answers

SOURCE: JBL Sub Amp Wiring Please

it seems rather redundant to bridge a mono amp. Unless the instruction manual states otherwise, i would assume that one speaker output is identical to the other (ran in parallel, like an A or B speaker, not like Left or Right), and you would present the amp with a two ohm load by wiring one speaker to each output. Bridging it may or may not work, but, again, it just seems redundant.

Posted on Mar 01, 2008

  • 631 Answers

SOURCE: my Jbl mono amp cuts out

It's likely that the amp has blown output transistors. To eliminate other possible problems, read through the following page:

Amp Going into Protection Mode

Let me know if you have any other questions.

Posted on Sep 17, 2008

  • 631 Answers

SOURCE: Amp Power light will not go on. Protection light is lit- Thump sound in speakers

It probably has shorted output transistors. To eliminate other possible causes, read through the following page.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Posted on Nov 02, 2008

  • 51 Answers

SOURCE: jbl gto 75.4 right channel not working

Hi

It's rare that 2 channels will fail simultaneously, are you sending 4 signals to the amp or just 2?

If you are sending just 2, perhaps the problem lies before the amp in the cabling to it, or the output from the headunit. If you are sending 4 signals then there may be a fuse in the amp that drives 2 channels out of the 4. Of course this may be the case should you just be sending 2 signals.

Posted on Mar 28, 2009

etirbynnor
  • 655 Answers

SOURCE: JBL GTO 301.1ii protect mode

Hello roets81,

Check the voltage at the amp. It's possible that the voltage is either too high (above 16V) or too low (below 8.5V). Also make sure that the amp case is not grounded. If these check out OK, the most likely cause is that the amp itself is defective and requires service.

Hope this helps.

Posted on May 27, 2009

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I got Sony Xplod XM-ZR704 700W 4/3/2-Channel Car Stereo Amplifier and 12" sub. it play good for continuous 2 hours but after that starts tripping and goes on off. i checked all wires and connections.


Amp is probably over heating. Make sure the ohm load of speaker is good for that amp. This amp is not really built to handle a bridged 2 ohm load. Make sure ground wire is clean and tight to the body chassis.

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If you want to run both the speakers at a time you will have to buy a professional amplifier like CROWN XLS202.
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JBL amp, worked fine untill 2 days ago. protection light on..


might have roasted your speakers voice coils a little which may be sending the amp into protect mode throw a speaker on it that you know works and if it doesnt trigger the protect circuit then you probably have a blown or almost sub.

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JBL GTO 301.1ii protect mode


Hello roets81,

Check the voltage at the amp. It's possible that the voltage is either too high (above 16V) or too low (below 8.5V). Also make sure that the amp case is not grounded. If these check out OK, the most likely cause is that the amp itself is defective and requires service.

Hope this helps.

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Jbl gto 75.4 right channel not working


Hi

It's rare that 2 channels will fail simultaneously, are you sending 4 signals to the amp or just 2?

If you are sending just 2, perhaps the problem lies before the amp in the cabling to it, or the output from the headunit. If you are sending 4 signals then there may be a fuse in the amp that drives 2 channels out of the 4. Of course this may be the case should you just be sending 2 signals.

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QSC 2450 Power amplifier


i have a pyle pro 1000 watt max 2 channel mono and 2 channel stereo and when i get that thing loud the little red light cums on basically what i mean is that the amp on channel one is cooked i myself i wouldn't even use it y cause more damage

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Clarion APA5240 5 channel Amp


try this it has worked for me in the past,..Contact Clarion by e-mail .Tell them your a student and learning electronics and in need of installation ,owners manual..ask if they can help and mail you info you need.Or try this link ..Its for a APA5241 could be very similar..http://www.clarion.com/us/en/MungoBlobs/720/1016/APA5241.pdf

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