Question about Jensen A600HLX Car Audio Amplifier

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My amp wont put out sound

My amp will trun on but it wont put out any sound when hooked up. the protect light comes on and stays on.

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If your amp powers on with protection light, try the following: Unhook all input RCA cables on the amp. See if that helps with protection light. With a DMM, measure the voltage going into the amp's power connectors. If it's less than the minimum required by the amp, protection will kick in. Also, check for over voltage, too much volts can also trigger protection. Check your speaker wires for short. If some of the wire strands are loose and touching each other or the chassis, it can cause protection. Basically try the amp with no RCA inputs, no speakers attached. If the protection doesn't go out, then you have an amp problem.

Posted on Mar 03, 2006

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It's blown....probably, check your connections and make sure your presenting it an ohm load it can handle....so check the sub with a dmm.

Posted on Mar 01, 2006

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1 Answer

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What is the speaker load in Ohms that you are running? Or what exactly is hooked up to it? are you bridging it? The protection light will come on if the load is too much for the amp to handel. If the load (in Ohms) is less than the rated load that it can run, it will stop the output to keep the amp from self destructing. The amp will sense that the demand for power will be too high for the amps circuitry which will either make the amp get so hot that it will burn up the copper on the board or more likely burn up the power mosfetts that power the speakers. If the Ohms are within range then it will allow power to flow through the circuit until the rails that the mosfetts are bound to until they get so hot that it will go into thermal protection. So if your amp has both thermal and overload protection lights and the overload is light then the load is probably too much for the amp. if it's bridged in mono the you can only have 1 speaker setup hooked up it if it's a 2 channel amp. a 4 channel amp bridged in mono for both front and rear channels will be able to have 2 speakers rated a 4 ohms each hooked up to the amp 1 set per bridged output or channel.
Try it running in stereo with only 1 speaker per channel and see if it will produce sound. If not then you have an amp that has internal problems and will need to be serviced. Check your warranty to see if you are covered.

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Sounds to me like the amp is going into protection mode. Try placing one sub on the amp with very little gain. One of the biggest reason why this happens is because the subwoofers are wired wrong. What is the brand and model number for your amp?

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Um the power light will flash then the protl. light will flash its all hooked up right but weird sounds coming out my subs.


Disconnect subs from output of amplifier and then turn on car and radio. Does amp stay on or go into protect? If it stays on then there is something wrong with the subs or how they are wired (series, parallel ) to the box and amp. If it still goes into protect then something internal with amp.

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Sounds like you have an ohm problem, Tryy hooking the positive from one speaker to the negative on the other speaker. Then hook the negative from the first speaker to the negative on your amp and the positive from the second to the positive on the amp this will drop your ohm load and the amp should stop going into protection.

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Sounds like you have blown your amplifier. There could be severqal causes for this happening. Take it to an electronics repair shop, but honestly you might just be better off replacing it altogether.

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Thunder 5604


okay u will have to troubleshoo the amp.....dose the amp light up?...when u have the radio on? also check your sub wires.going to the amp....make sure the rca'sare hooked up to the radio rear out puts are the radio sub out puts...and then test your amp gain adjustment...let me know if that work's

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what are the color of the lights that stay on.red= protect/ green=on.if the amp has little sound it probably still working,check deck output volume(rca)

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