Question about Alpine MRD-M1000 Car Audio Amplifier

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Amp powers up and reads 14.4 volts... 0 amps.

I have an alpine mrd-m500 and i hooked everything up and had my buddy look over it and everything is hooked up properly. The amp is getting power but the volt meter is reading 0. (its all digital) I basically re-wired the whole thing and it was not that either. I took the amp apart and checked for any broken soder and could not find any problems just by looking at it either... i need and expert to help me! is my amp toast?

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  • 21 Answers

Check to make sure amp is not in safe mode, you can turn this on and off in the menu.

Posted on May 24, 2009

  • robotott Jun 26, 2009

    You can use a voltage meter to verify you are sending a signal to the amp's rca inputs. You can download a 70Hz test tone online and burn that to cd. Play that track on repeat in your cd player and set the voltmeter to read AC volts, with the rca disconnected from your amp put one lead of the voltmeter on the center pin and the other lead to the outer piece of the rca cable. You should read a fairly steady voltage that is strongest when the cd player is turned all the way to max. Measure this voltage usually from 2 to 8 volts AC. Set the gain on your amp in the digital display to match this voltage. If you are getting a good signal from the cd player you can dissconnect the subwooer and measure the voltage on the amp. Connect each lead of the voltmeter to the + and - on the speaker output, If you read a AC voltage output here there is nothing wrong with the amp. The voltage read on the speaker outputs is usually <20 volts caution should be used when placing meter leads.

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That is a code to inform you of an issue, and to help direct you to a particular area of concern

HOT & E-1 = both for heat issue

E-2 = for a voltage issue

E-3 = for a current issue.

While yours is a current issue, that reflects a problem with your input or output signal pairs. You should disconnect the subs at the amp, then operate the unit as normal to see if the code reappears. This is the start of your process of elimination, where as you will be able to determine the general location of the issue, weather it is before - internal - after the amp, hence If after the subs were disconnected, the code did not return then it would be obvious that you should focus on the subs and their signal pairs. troubleshooting in small increments until the issue is discovered.

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Could not find exact, but close manual.  It is the MRP-M450 mono block amp from alpine.

 

Go to this url and view in Adobe. Print it if you need to

http://vault.alpine-usa.com/products/documents/OM_MRP-M450.PDF

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