Question about Alpine MRD-M605 - V12 MONO AMP 600WX1 RMS 2 OHM Car Audio Amplifier

1 Answer

CUR is showing on the display

The negative speaker wire must have touched the power block and now amp is not working. tried all i can think of but i think its stuck in a protect mode or something, and CUR is all it shows on the display. how can i reset the amp or do you have any suggestions in how i can repair this?

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  • lil_kid36 Feb 06, 2009

    i know i wouldnt let my wires touch + to- all i did was change my battery fuse size to a 50 it was a thirty and now it blinks CUR and i cant stop it.

  • rav_uk May 21, 2009

    I have MRD M605 and the CUR is blinking on the amp. i disconnected the
    power but is still the same and the amp its still
    flashing CUR. All inline fuses are ok. There is only the +, - and the
    remote cables connected to it. I noticed the fan inside is not
    spinning! Any ideas on fixing it?

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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.

Posted on Oct 23, 2008

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2 Answers

Disc can eject and be inserted but display does not light up, none of the buttons do anything. tried a different deck and it does the same thing the display dosen't work and no music plays. i am thinking...


It sounds like they messed up your installation. You can confirm their work by verifying that each wire was attached properly.

2005 Pontiac Sunfire Car Radio Wiring Diagram Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: Pink
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Click on this link for a PDF of the installation instructions of the radio (If you don't have the installation guide that came with the radio).

Illumination is the grey wire from the car to the orange with white stripe from the radio.

I suspect that the yellow wire from the car is not connected properly. When the orange wire (constant power from the car) is attached, but not the yellow wire you can insert and eject cds, but it will not turn on. Constant power is used for maintaining the clock and preset radio stations.

If everything looks correct, I would take your car back to the installer and have them correct the issue.

Dec 21, 2009 | Sony CDX-GT400 CD Player

1 Answer

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...

2 Answers

BUTCHERED WIRING.


Dont know what year you have but one of these will work. Ground is usually separate in Dodges:

1990 Dodge Caravan Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Red
Car Radio Accessory Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Orange/White
Car Stereo Antenna Trigger Wire: Yellow
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Green/Yellow
Right Front Speaker Positive Wire (+): Purple
Right Front Speaker Negative Wire (-): Purple/Yellow
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Tail Gate
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Brown/Yellow
Right Rear Speaker Positive Wire (+): Blue/Red
Right Rear Speaker Negative Wire (-): Blue/White

1997 Dodge Caravan Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Pink
Car Radio Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Black/Yellow
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Blue/Orange
Right Rear Speaker Negative Wire (-): Blue/White

2003 Dodge Caravan Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Gray/Red
Car Radio Switched 12v+ Wire: Black/Pink
Car Radio Ground Wire: Chassis Or Metal Strap
Car Radio Illumination Wire: Orange/Tan
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: Gray/Green
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Green/Black
Right Front Speaker Positive Wire (+): Gray
Right Front Speaker Negative Wire (-): Gray/Black
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Green/Black
Left Rear Speaker Negative Wire (-): Green/Orange
Right Rear Speaker Positive Wire (+): Gray/Black
Right Rear Speaker Negative Wire (-): Gray/Pink



Jun 02, 2009 | Car Audio & Video

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

Alpine v12 amp displays CUR and cuts itself out when i turn up the volume????


I'm not specifically familiar with that model but I'm pretty sure the"CUR" is indicating under current or not enough current. what's happening is your amp is under load and doesn't have enough power so it shuts down rather than smoke. I would suggest you run heavier cable from the battery to the amp and add a giant cap so that when the amp surges the cap will compensate for the sudden draw. This is not a cheap fix but if you install heavy duty power cable and a quality giant capacitor (2 farad) you will be able to push the amp until your speakers catch fire and your amp will be fine.

Rob

Dec 12, 2008 | Alpine Car Audio & Video

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

CUR showing on the display


Have you measured the DC resistance of the woofer to determine if it's OK? You will need to disconnect it from the amp. Check each voice coil individually.

 

If you disconnect both speaker wires from the amp, does it still show an overcurrent condition?

 

 

Oct 20, 2007 | Alpine MRD-M605 Car Audio Amplifier

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