20 Most Recent JBL SCS125A System Questions & Answers


Subwoofer "thumping" w. no audio feed

You need to check your ground connection. If there is a bad ground there will be feedback to the amp and it will just sit there and loop back with the Thump, Thump, Thump sound. I had to wire my amp's ground all the way back to the negative battery terminal. It was a pain but I have never had a problem since :)
10/8/2016 6:52:00 PM • JBL SCS125A... • Answered on Oct 08, 2016

How to connect satellite

How to connect im911
3/14/2012 11:23:49 PM • JBL SCS125A... • Answered on Mar 14, 2012

I have very low speaker volume on one speaker, i

may be its speaker have some problem. its tweeter is working that's why u get a very low volume through that speaker. change the speaker in side that box and then try.
12/23/2010 5:15:20 AM • JBL SCS125A... • Answered on Dec 23, 2010

4 out of my 5

Before you blame the speaker one simple test needs to be made, if you have not done so already.

If one remaning speaker has full volume output, swap one of the 'defective" speakers to that same channel the "good" speaker was attached to, and see if the output drops.
11/23/2010 7:05:18 PM • JBL SCS125A... • Answered on Nov 23, 2010

Clicking noise from subwoofer

Malfunction in the amp or to high signal on the input protect relay is cliping
12/31/2008 11:58:24 PM • JBL SCS125A... • Answered on Dec 31, 2008

Thumping when not hooked up

First thing to check are signal cables but broken fuse telling me that problem is 99% in sub power supply unit or the amp.If you have a voltmeter and if you KNOW how to do it dissasembly it and check DC voltage on a speaker conntacts.If there is any DC present your amp is worn out.But this can be VERY DANGER because 220/110V is there so if you are not 100%sure that you can do it DON'T!!!
3/23/2008 9:04:17 PM • JBL SCS125A... • Answered on Mar 23, 2008

JBL prx612m humming and cracking sound what can be the solution

The causes can be poor connection in the signal input lead, could be the mixer you use, could be a speaker failurs, could be an amplifier failure.
1/21/2024 10:47:01 AM • JBL Audio... • Answered on Jan 21, 2024

My JBL PRX 512m humming and rattling is the problem with the amp side or pre amp.

Could be either or both. You will have to fault find to get an answer.
1/20/2024 7:02:45 AM • JBL Audio... • Answered on Jan 20, 2024

How to open jbl on stage 200id?

To open the JBL On Stage 200iD, you need to follow these steps: Remove the power adapter from the back of the device. Turn the device over so that the bottom is facing up. Locate the six rubber pads on the bottom of the device and remove them using a plastic opening tool. Remove the six 1cm T-10 torx screws found under the rubber pads using a T-10 Torx screwdriver. Open the device along its seam. For more information, please refer to the JBL ON STAGE 200ID USER MANUAL. https://www.manualslib.com/manual/788652/Jbl-On-Stage-200id.html
10/27/2023 9:59:32 PM • JBL Audio... • Answered on Oct 27, 2023

Problem with your JBL BoomBox2 speaker (or similiar) ?

Just found this out, after crazy searching & brainstorming. So if your speaker suddenly goes silent or sound comes and goes, you can check this out: At least the JBL BoomBox seems to have this integrated in its architecture so there's nothing we can do about it, complain to JBL : ) But to the problem: if the SOURCE of music/sound is too low, then the speaker may go into a "sleep mode" - silent. So ensure always your SOURCE of sound, connected to the speaker, has volume at least 80% to avoid this problem. Hope this helps & no one needs to ditch and buy a new one ! : )


Hello Dane, if the fuse is good, you can have the speaker and driver of the horn, open, therefore it will not sound Hola Dane, si el fusible esta bien, puedes tener el parlante y el driver de la bocina, abiertos, por lo tanto no va a sonar
6/12/2023 9:44:31 PM • JBL Audio... • Answered on Jun 12, 2023

How do I fix a BLINKING light on the jbl 10..G2 input signal board that causes no signal to go thru

A blinking light on the JBL 10" G2 input signal board can indicate a problem with the input signal. Here are some steps you can take to try to resolve the issue:
  1. Check the input cables: Make sure the cables are securely connected and there's no damage to the cables or the input jacks. Try swapping out the cables with a known working set to see if that resolves the issue.
  2. Check the source: Make sure the source device (such as a mixer or computer) is working properly and is sending an output signal.
  3. Check the input settings: Make sure the input settings on the JBL 10" G2 are correct. Refer to the manual for information on the correct input settings.
  4. Power cycle the device: Turn off the JBL 10" G2 and unplug it from the power source. Wait a few minutes and then plug it back in and turn it on.
  5. Check for firmware updates: Make sure you have the latest firmware installed on the JBL 10" G2. Refer to the manual or the JBL website for information on firmware updates.
  6. Contact JBL customer support: If you're unable to resolve the issue with the above steps, contact JBL customer support for further assistance.
If the issue persists, it's possible that the input signal board on the JBL 10" G2 may need to be repaired or replaced. In this case, you may want to consider contacting JBL customer support for information on repair options.
2/1/2023 5:46:55 PM • JBL Audio... • Answered on Feb 01, 2023

JBL PRX 625 Speaker. How can we fix the overheating in the speaker please?

Question edited for clarity. Undo the screws at the back and look for a cooling fan. There is something in the centre that looks like one. Or contact JBL direct and put in a warranty claim. The overheating issue seems well documented. Although you shouldn't have to, you could easily cut a vent hole with filter at the base and a 4" case fan above the amplifier to pull out the hot air. 3 x 500 watt inside is bound to create heat. https://www.google.com/search?q=jbl+prx+625+overheating+problem ..
1/13/2023 5:15:44 PM • JBL Audio... • Answered on Jan 13, 2023

Jbl charge 2 is connected but why no sound from speaker?

Whene jbl speaker charg 2 plus connect cherger with no sound work. But charger without connect speaker sound work everybody remember this
1/8/2023 11:48:43 PM • JBL Audio... • Answered on Jan 08, 2023

My JBL e45bt wireless headphones won't turn on. I've tried charging them overnight, but i doesn't help at all. How do I get this fixed?

If your JBL E45BT wireless headphones will not turn on, there could be a problem with the battery or the charging system. Here are a few things you can try to fix the problem:
  1. Make sure that the headphones are charged. If the battery is completely drained, the headphones will not turn on. Try charging the headphones for at least 2 hours to see if this resolves the issue.
  2. Check the charging cable and port to make sure they are working properly. Make sure the cable is securely plugged into the headphones and the power source, and that the port is free of debris.
  3. Try a different charging cable or power source to see if the problem is with the cable or the power source.
  4. If the problem persists after trying these steps, it is possible that there is a problem with the battery or the charging system. In this case, you may need to have the headphones inspected by a technician to determine the cause of the issue.
If you are not comfortable troubleshooting the problem yourself, it is recommended that you contact JBL customer service for assistance. They may be able to provide further guidance or offer repair options.
1/8/2023 3:45:21 AM • JBL Audio... • Answered on Jan 08, 2023

I have a JBL SUBWOOFER MODELPSW-1200 that hums as soon as it is plugged into the wall plug, there are no speaker wires connected to the subwoofer!

The hum might be caused by the main semi-conductor device that produces the sound. Of course a capacitor might look normal and still cause the problem. The only way is to replace the big ones in the unit.
12/18/2022 12:57:57 AM • JBL Audio... • Answered on Dec 18, 2022
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subwoofer thumping w no audio feed

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