Question about Alpine MRV-1507 Car Audio Amplifier

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Alpine mrv-1507 Whenever i turn the amp on the power light glows red and i have tried everything from getting a new fuse to insalling a new power wire nothing has worked so what can i do to get it working again?

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

Posted on Jun 05, 2008

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The portection light on my alpine mrv-1507 wont let me get any sound


remove the rca wires and the speaker output wires and just leave the 12volt power/ remote/ and ground connected. turn on the radio and see if the light goes off. if it does then one of your speaker or rca wires are shorted, plug in one at a time and see which one gets you the red protect light, then find the short for that speaker/rca wire. if the red light turns on with only the 12volts/remote/ground, then the short is in the amp.

Feb 26, 2010 | Ohm Crystal Mobile Sound CADT 600.2...

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

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

PROTECTION LIGHT IS FLASHING


opoen it up again and look at the mosfets leads use a needle nose pliers to make sure that non fried off that is a common problem

Apr 02, 2009 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Power and protect light blink red


disconect speaker wires from and amp and repower if light is still on disconnect RCA jacks and repower if protection is still on you have a solder jump inside your amp send it in for erepair to dealer or buy a new amp at dealer prices at www.godspeedaudioheaven.com

Feb 03, 2009 | Alpine MRV-1507 Car Audio Amplifier

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

2 Answers

Mrv1507 power light blinks red..


Your speakers probably are made for 6 or 8 ohms. to check, take out any of the speakers and read the back for the ohm rating, if it is more ohms, you need a more powerful amp.

Jun 18, 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

2 Answers

Alpine MRV-1507 Running 2 Alpine Type R 1242D


If you are not using a capacitor at this point, i would recommend getting a 1 or 1.5 farad cap and adding it to the system to take some of the strain off of your electrical system.

next on the agenda is your speaker wiring, the mrv-1507 runs around 900 watts at 4 ohms bridged.. your speakers (I believe) have dual voice coils, so 4 connections total, if you are running 2 of the speakers this will be 8 connections total, in order to match the impedance of the amp you will have to wire the speakers in series/parallel. if you have never done this before, it is easy and will ensure you are running the set at 4 ohms (which will make a huge difference in and of itself).

take both speakers out, you are going to want to wire the positive from one coil to the negative of the other on the same speaker. do this to both of them, this should leave you with one positive and one negative unused on each speaker. now you want to hook both of your free negatives together and run it to the negative on your amp, then repeat the process with the positives.

this is going parallel (4 ohm / 2 coils = 2ohm) and series (2ohm x 2 bridged coils = 4ohm).

now your rms on the speakers is 500 watts each, so matching them to a 900 watt or so amp should work great.

when you are installing the wire, make sure the gauge is correct for the length of run and for the wattage, also connect your power directly to the battery or to a distribution block that is capable of handling the power. in all of my installations i run 0 gauge wire from the battery to a distributor block i mount on the firewall, then i run anywhere from 2 to 6 gauge wire to the amp depending on the wattage and run length.

for your purposes, if the length of wire from the battery to the amplifier is 13 feet or less, 4 gauge wire should be fine, if it is between 13 and 20 feet, i would consider buying 2 gauge wire for the install.

you didn't mention what size your fuse is, but i am going to assume it is 90-100 amp, for a 1000 watt amp i use a 150 amp fuse. if you can find a 130 amp fuse it should work fine.

a major thing to remember when installing an amplifier is that your vehicle's charging system was never meant to accommodate large loads for an extended period of time. connecting direct to the battery, using a stiffening capacitor, and properly matching impedance will go a long way towards helping to overcome the limitations. in the future, if you decide to go all out on this project, i would recommend getting a high output alternator, a battery isolator, and a deep cycle battery for the audio equipment. this will insure that you never kill your primary battery, and that you won't run into issues down the road with your vehicle electronics.

i hope this helps you out, if youhave any further questions, feel free to ask.

trin

Nov 14, 2007 | Alpine MRV-1507 Car Audio Amplifier

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