Question about Jensen XA2125 Car Audio Amplifier

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I have an old Jensen XA2125 that I had removed from my car and now putting it back in. My problem is I have everything hooked up but it appears the amp is not working for some reason. No red light and no green light. Its hooked up exactly like it was when I got it. No sound, no lights. Its hooked up to my head unit with Monster RCA cables.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 631 Answers

SOURCE: both green and red ligt or on my jensen ka3

Generally, the power light is green and the protect light is red. If the protect light is on there could be a short in the wiring or there could be an internal fault in the amp.

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down (goes into protection), the amp likely has blown output transistors.

Posted on Dec 28, 2007

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jerryg50
  • 1667 Answers

SOURCE: Jensen Amp and Sub

If you followed the instructions correctly, then the amp must be defective. This is sort of simple.

My generic suggestions:
You have the power, the ground, the outputs to the speakers, and then the input.

Make sure that none of the speaker wires are somehow being grounded. Make sure that nothing is shorted that feeds the speakers.


Jerry G.


Posted on May 01, 2008

  • 12 Answers

SOURCE: Jensen LXA400 Fuse Size and RCA hook up for 2 channel mode?

take it to a stereo shop. there are variables you may not be aware of when hooking up speakers to an amplifier like ohms, very important!

Posted on Dec 10, 2008

  • 11 Answers

SOURCE: Jenson a300hlx 300 watt amp

DISCONNECT THE GROUND WIRE. SAND ALL THE PAINT FROM THAT AREA AND REGROUND IT. WHAT I WOULD RECOMMEND IS DRILLING A HOLE THROUGH THAT TRUNK, SAND THE PAINT AWAY FROM WHERE THE GROUND WIRE WILL GO AND BOLT THE GROUND WIRE TO THE TRUNK BOTTOM. THE PAINT WILL CAUSE THE AMP NOT TO GET A SOLID GROUND

Posted on Feb 24, 2009

  • 149 Answers

SOURCE: similar prob.did the 12 steps on how to install

If you are running a set or a single subwoofer with the jensen amp than you will want to hook up the rca cord to the subwoofer rca connection on the back of the stereo unit-the other rca outputs are there in the event that you want to run a 2 or 4 channel amp to power the speakers that are generally located in the doors or back deck-with that set up properly you would still be able to adjust the balance and the fader just as though you were powering the speakers with the deck. Pug the free ends of the RCA cord into the input rca receptacles of the amp- the stereo now will feed a signal to the amplifier that only contains bass - good luck

Posted on May 19, 2009

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