20 Most Recent JBL SCS125A System Questions & Answers

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 :)

JBL SCS125A... | Answered on Oct 08, 2016

How to connect im911

JBL SCS125A... | Answered on Mar 14, 2012

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.

JBL SCS125A... | Answered on Dec 23, 2010

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.

JBL SCS125A... | Answered on Nov 23, 2010

Malfunction in the amp or to high signal on the input protect relay is cliping

JBL SCS125A... | Answered on Dec 31, 2008

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!!!

JBL SCS125A... | Answered on Mar 23, 2008


JBL Audio... | Answered 3 days ago

If your speaker supports Bluetooth. Use the screenshots below to connect to your device. If not, you can use a wire from your iPhone to the speaker. it looks like the last screenshot below.

On your phone...
Go to Settings and then Bluetooth. Turn on Bluetooth. Look for your JBL device under "OTHER DEVICES" and tap on it to connect.
On your speaker.
Turn on pairing mode for your JBL deivce
Find your JBL device on your phone or laptop and pair them
Confirm successful pairing
JBL speakers typically have a dedicated Bluetooth button to use to pair your speaker.




JBL Audio... | Answered on Aug 19, 2019

For the JBL Awake
I just had the same issue and i found a way to solve this :
1. Unplug the power supply
2. Plug it back while holding the [ON/OFF] button
3. The screen shows “UP9” again
4. Do the update with the JBL Music app (I did it with my old iPhone 4s plugged on the 30pin connector)
5. Finish the firmware update ... until the app tells you to unplug the power before restarting the device
(Sorry for my bad English, i’m French)

JBL Audio... | Answered on Aug 17, 2019

This sounds like it could be the input board. We have them in stock.

JBL Audio... | Answered on Jul 19, 2019

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