Question about Alpine MRV-1507 Car Audio Amplifier

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Alpine MRV-1507 "low Voltage"

Alpine MRV-1507. Indicator LED indicates "Low Voltage". Worked fine, had it loud then stopped instantly. Light also indicates "RCA Ground Floated". How do i fix these problems. The battery is at 14.5 volts as indicated on the DIC in my Aurora. Thanks

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  • royceman87 Aug 16, 2008

    *UPDATE* Installed this amplifier in my pals car, same wiring kit, same everything almost except different car. Worked fine, then back into my car it went, same thing over again the damn lights blink.

  • royceman87 Aug 17, 2008

    now if i get a new headunit would that be just as good? and what about the "low voltage" issue?

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If it indicates that you have an open shield ground, read through the following page. It will show you how to test the shield ground connection of your head unit..

Temporary RCA Shield Repair


Posted on Aug 17, 2008

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I have the same proble,mine 1507 power light go red everytinme i hook it up to my CAP,and no sound comes of it..please help me..thanks


hi djdannid19!
guess your car battery is too weak, replace or get a second one build in (btw use of cap not necessary if you have big batteries). also might be that the cap is gone dry.
regards

Feb 26, 2011 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Amp


I honestly don't have a solid answer for you. I can say check your fuses. Check your battery to amp wire. And also check your ground. Make sure the fuse on your amp is also not blown

Feb 26, 2010 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

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hi, there is a possibilty of the volume control being foulty pls get the volume control nobe changed . voltage does not interfere with control nobes

Jul 10, 2009 | Alpine MRV-T420 Car Audio Amplifier

1 Answer

How do i run it 2 ohm stable


This is how 2 type r's are wired to one amp at 2ohms hope this helps dont forget to rate me thanks

Upfront Audio :)

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Apr 06, 2009 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Low Voltage Post


The head unit doesn't need to be replaced. It can be repaired if the shield is open.

If the amp still give an indication of low voltage and the voltage isn't too low, the amp probably has an internal fault.

Aug 17, 2008 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

V12 MRV-1507 or Xplod? Amplifier - XM-ZR1252 good quality sound


Alpine is just a better brand in general. I have the older MRV-1507, sounds GREAT, i have had friends who has had the Explode line, but it was always a temporary system until they got something better, like the alpine or kenwood.

Aug 14, 2008 | Car Amplifiers

1 Answer

MRV - 1507 Question ...


The MRV-1507 is a two channel amplifier, below I've pasted important info from the manual:

Battery Lead (Sold Separately)
Be sure to add a 80 amp fuse as close as possible
to the battery’s positive (+) terminal. This fuse will
protect your vehicle’s electrical system in case of a
short circuit. If you need to extend this lead, the wire
gauge should be AWG8 or larger.
MRV-1507 ... 80A amp fuse

Power Output: RMS Continuous Power (at 12.0V, 20 Hz to 20
kHz)
MRV-1507
Per channel into 4 ohms ......................... 150W, 0.08% THD
Per channel into 2 ohms .......................... 300W, 0.3% THD
Bridged into 4 ohms ................................ 600W, 0.3% THD

You can find a manual for this amp here:
http://www.alpine-usa.com/US-en/support/support_search.php?modelname=mrv-1507

Jul 07, 2008 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Alpine mrv-1507


Your amp. got damaged the audio amplifiers IC's thats why it's going on protect mode.

Jun 05, 2008 | Alpine MRV-1507 Car Audio Amplifier

2 Answers

Alpine 1507


I would either try a bigger fuse, if possible, or turn the power output dial on the back of your amp down. This can be done with jus a simple flathead screwdriver. I suggestion would be to go out and buy a power monitoring cap. Wal-mart, or Tweeter usually distributes them. It'll have a LED reading on the top, with two wire hook-ups either on the bottom or the top for positive and negative, place this in between your amp and your subs in the wiring set-up.

Feb 25, 2008 | Alpine MRV-1507 Car Audio Amplifier

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