Question about Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS 2 OHM Car Audio Amplifier
If the M605 fails and displays "CUR", it means that there is excessive current to the amp.
The most common causes for excessive current draw is operating the amp into a lower impedance than it is rated to handle, shorted speaker voice coil(s), and/or shorted or grounded speaker wires.
The amp can operate into a load no lower than 2ohms. First power everything off and disconnect the positive amp power lead temporarily (easist way is to just pull the fuse). At this point you should ONLY have the ground and remote connected. Reconnect positive (insert fuse) and turn on the vehicle ignition and your head unit. If the amp still displays the "CUR" error, the output MOSFET's are probably defective and the amp requires repair or replacement. If it powers up normally, reconnect the speaker wires until you locate the faulty one, and then correct whatever is causing it.
Hope this helps.
Posted on Jul 17, 2009
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Posted on Jan 02, 2017
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