Question about Alpine MRD-M501 Car Audio Amplifier
I need help in my amp, I just need to know how to unlock my amp. It turns on and everything, but when i hook up the cables from the speakers to the amp it just doesn't sound... So my friend said that the speakers cables from the amp crossed each other, and that's how it got locked... if you have a solution i will hear it from you thanks
Hi. If you shorted (touched) the speaker wires together, or let them touch the chassis of the car, then it may have locked out. Just turning the amp off and back on will fix this, so it sounds like you have done damage to it. Most amps have a speaker relay which gives a click sound when you turn on. If there is no click, then it may have a power supply failure.
Posted on Oct 25, 2008
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Posted on Jan 02, 2017
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