Question about Jensen XA4150 Car Audio Amplifier

1 Answer

Lost one channel

I have had this amp for 5 years...its been flawless. However recently I lost one channel. I verified it wasnt a speaker by switching speakers wires on the amp to the good channel. I checked the 2 fuses on the amp...they are good. Do you have a wiring diagram before I tear into this..Im guessing one of the power amps ( internally) has had it. I am electronics savvy and have repaired things like before. I just like some insight from someone else, if youve already attempted this repair and if the parts are available.

Also I paid $300 for the amp and the 10 inch dual sub box...should I just call it done and get another amp at this point. Its been in my car and running for 225,000 miles...and its had A LOT of heat cycles.

Posted by Titan1969 on

  • Titan1969 Oct 27, 2007

    ok Ill crack it open and see whats up.thanks

  • Titan1969 Oct 27, 2007

    ok. Ill crack it open let you know what I find.

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  • Master
  • 631 Answers

Have you tried switching the signal cables?

Try moving all of the controls and switches. A dirty contact can cause similar problems.

If these don't help, you probably have a broken connection in the amp. Generally, when semiconductors fail, you have excessive current draw and the amp goes into protection or blows the fuse.

Posted on Oct 26, 2007

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If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
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OK

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