Question about Jensen LXA400 Car Audio Amplifier

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My amp keeps going into protective mode.

I just bought this amp and hooked it up to my two rear speakers (pioneer 6.5's 160w each)...when i have the gain setting on minimum and my deck volume below about 16, the sound comes through the speakers just fine, but the minute i turn the volume up on my deck past 16 or so, the amp turns to protective mode and the sound stops coming through on my speakers. the amp is not overheating at all and i have played around with the settings trying to see if i can get it to play any louder than 16 (which is very quiet). Any ideas what the problem could be? thanks

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  • Anonymous Dec 15, 2007

    dude i feel your pain, i have two pioneer 6*9s hooked to a jensen 650 watt mono amp. if i have my volume below like 10 (on a 32 max) cd player it plays. once i go over it goes into protect. i'm about to try different wiring method hoping lowering ohms will boost performance. best of luck bro peace

  • awb101 Dec 16, 2007

    i have a jensen lxa600 600 watt amp i cant get it out of protect mode. ive tried lots of different things ive moved the ground lots of times. any help would be great



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Try to lower the SLA option on ur deck maybe the amp is pulling to much current from the battery try putting a battery with more AMPS

Posted on Jan 31, 2006


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I really don't recommend this product to anyone, or any newer pioneer products for that matter (except the elite line). This model has the "hybrid" design, which is a very flawed design. At first the speakers will start cutting in and out, and then some of them wont work at all, and then the receiver will flash "overload" and the receiver will go into a permanent protection, all because the receiver cant handle the resistance of the speakers(doesn't matter what speaker it is). Once in protect mode, press ENTER+ ADVANCED SURROUND and it will tell you what the problem is causing it to stay in protect mode. In order to keep this from happening, use external amps. Pioneer wants around 500 dollars to fix it if its out of warranty, it will cost at least 50 to fix it yourself, in most cases it will cost 150 to fix it yourself (most cases all 3 power modules will go out, or as pioneer calls them, power packs). If you have an older vsx model (50s-80s) then it is usually worth fixing. If your having problems with pioneer vsx 3600, 3700s, 3800, or 3900s, send me an email at and i will help you the best i can

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Power overload

That is a good thing, your receiver is going into "protect mode" that means the receiver is shutting down to keep from damaging delicate internal circuitry, it is sensing a speaker bottoming out or some other electrical "short" that could be damaging!
Also could be from over driveing the amp and then it starts to overheat thus going into "protect mode".
If your speakers are "clipping or distorting" turn it down, you are going to ruin your amp. Good luck !

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