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Alpine 605 digital amp, watched wrench slip and cause big spark next to positive speaker wire out put, amp reads CUR, ive tried rebooting, unplugging ALL conects , still wont run just flashes CUR any advice before i spend money on a dealer!

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  • dereckconnor Oct 13, 2008

    thanks ill check it ou tommorow!

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It looks like that you have shorted out a output driver transistor, only option is to open up and look for scorched transistor, if you cannot see one then you will have to get a multimeter set to continuity setting testing.

take a readings between each pins in all possible combinations of all the transistor of similar shape and size, the transistor with the odd readings is the blown transistor.

Posted on Oct 13, 2008

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I have an alpine mrd-m1001 getting curr message ho do you reset the amp


Hello deeprajm,

Shorted or low impedance outputs can cause the "CUR" display. Power down everything and remove the speaker wires. If it will then power up without the display, the problem is probably a short in the speaker wire or voice coil, or the impedance load is too low. If there are multiple subs, reconnect them one at a time to isolate the bad one and then correct the problem. If the amp works properly with either of the subs but not both, rewire the subs for a higher final impedance.

If the amp still displays "CUR" with the speakers disconnected, there's most likely an internal fault that requires component level repair.

Hope this helps.

Aug 01, 2009 | Alpine MRD-M1001 Car Audio Amplifier

1 Answer

Amplifier displays "CUR"


Hello anwbrown,

The "CUR" display means that the amp is drawing excessive current and the protection circuit is activating. Too low impedance or shorted speakers will cause the amp to draw excessive current.

The Alpine V12 is a Class D mono amp with only one set of speaker outputs. All versions, M301, M501, and M1001 are only stable to 2ohms. Assuming that all 6 of your connected subwoofers and speakers are 4ohm and they're all connected in parallel, the amp sees a .67 ohm load, far below it's rated impedance.

When brand new, the amp could probably operate at low to moderate volume levels without drawing excessive current. But as electronic components age, their tolerances change and they become less able to withstand excessive current or mismatched impedances.

I'd get a 4-channel amp and drive the 4" speakers off the front channels and the 6X9's off the rear channels. And just power the subs off the V12 making sure that they are connected to show a minimum load of 2ohms.

Hope this helps.

Jul 27, 2009 | Alpine MRV-F345 Car Audio Amplifier

1 Answer

How do you get it out of cur mode


Hello whatup_132,

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.

Jul 17, 2009 | Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS...

1 Answer

CUR display


Hello yte1771,

You can download the manual from Crutchfield.

The "CUR" display is an indication of excessive current and is most likely caused by too low impedance or a fault in the wiring or the amp itself. It's probably not your cap.

Hope this helps.

May 18, 2009 | Alpine MRD-M605 Car Audio Amplifier

1 Answer

CUR on alpine MRD M 605


check your ground and make sure you battery power is connect properly

Apr 14, 2009 | Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS...

1 Answer

CUR is showing on the display


The amp will reset when you cut the power off to it. Disconect bat for 30 sec and reconect. But to be honist with u if the wire jumped out and grounded some how during a high level, there is probley internal damage done.

Oct 17, 2008 | Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS...

1 Answer

CUR showing on the display


This means too much current, find and eliminate cause of excessie current and turn power off, also possibe power and ground are not big enough .Recommend 4guage wires

Oct 17, 2008 | Alpine MRD-M605 Car Audio Amplifier

1 Answer

Need to know how to wire Alpine 12" 1242D 4ohm Want to use 1 speaker in ported box with Phoenix gold 2200pro amp


As long as the total wattage of the amp does not exceed the total wattage of the speaker, you can bridge the amp. To do this, put the positive wire of the speaker on the positive terminal of channel 1 on the amp, and the speaker negative wire on the negative terminal of channel 2. This allows you to run the amp's full power into one speaker.

Aug 02, 2008 | Alpine Car Audio & Video

1 Answer

Alpine amp


You could have damaged the speaker, try another speaker or buy a volt meter and check the speaker ohms. You could also set the meter to read A/C voltage and put each lead to the positive and negative speaker output on the amp and see if the amp is outputing any voltage. Hopefully it is just the speaker and not the amp.

Jan 05, 2008 | Alpine CDA-9847 CD Player

1 Answer

Displays "CUR"


You probably have too low of an impedance load on ot (too many speakers or wrong kind). It has to have a minimum of 2 ohms on each channel, or 4 ohms if bridged (that means don't put 2 subs on the bridge!!).

Sep 22, 2007 | Alpine MRV-F345 Car Audio Amplifier

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