Question about MTX Thunder 801D Car Audio Amplifier

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I bought amp and test it the green light came on it sound good.i get home and install it and all i get is red light andbnothing

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Mtx 801
i bought amp and test it the green light came on i - bought-amp-test-green-light-came-sound-t0vzops3md3qpqya0esvxfpx-5-0.jpg

Posted on Feb 05, 2015

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Red light means Protection mode....

some of the reasons a amp will go into protection mode is

1) overcurrent - the amps power wire is shorted or the amp is fried
2) thermal - will go off when the amp cools down
3) Short circuit - the load on the output is too low
4) you have your speakers off balance. exp: 3 speakers hooked up instead of 2 or 4 or larger to smaller speakers ratio
5) your power supply wire is to small of a gauge
To reset your amp or moving your speaker and subs wiring around to ensure balance.

Hope this Helps and Good Luck

Posted on Nov 28, 2014

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Posted on Jan 02, 2017

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SOURCE: No sound from speakers, but there is power to amp

make sure the power wire and the remote wire have voltage. at least 12 volts. make sure the ground wire is good and has a good solid ground. after that make sure the rca cables are getting signal from the radio. if you have a small speaker or tweeter you can touch the wires from the speaker to the rca cables and it should play music very quietly. meter the subs and make sure theyre ok and not shorted or bad. if all that checks out good.... the amp is probably bad. start with all the simple stuff and work youre way up. if the amp has good power and signal and good speakers then the only thing thats left is the amp. good luck

Posted on Dec 30, 2009

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As long as you have B+ and remote voltage, it will light up. Since you've tested the speaker and the signal source, I think the amplifier is likely defective.

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