When I listen music really quietly, it plays fine, but when I put it louder there comes a lot of distortion. It has never done so before, so what I should measure first? ( I have red other threads of mrv-1000, but anyone doesn't have same fault like me) If anyone can help, I would be grateful, thanks in advance.
MRV-1000
MRV-1000
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If the amp only shuts down when it's driven to relatively high volume, you need to confirm that you have sufficient power supply voltage. With your multimeter set to DC volts, the black meter probe on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red probe alternately to the B+ and remote terminals of the amp while driving the amp to the point of distortion. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever terminal the voltage is dropping on. If both the B+ and remote turn-on lines are low and your battery is fully charged, you may have a bad ground connection.
Have you tried disconnecting the speakers from one channel at a time to see if the speakers/wiring are the problem?
Have you tried disconnecting the speakers from one channel at a time to see if the speakers/wiring are the problem?
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