Question about Alpine MRV-1507 Car Audio Amplifier

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Alpine MRV-1507 Running 2 Alpine Type R 1242D

I have the 1507 running 2 alpine type r 1242d (4 ohms). The amp is bridges

mono and the 2 of my type r are also bridge. the problem is that when it's

low in volume it seems to be fine. But when i turn up the volume, the

protection light start to flash red and if turn louder, the 4 gauge wire with the

fuse breaker will burn. So I can't figure out why is it burning the fuse.

Every power wire and ground are good and I'm thinking that it has

something to do with not having enough power to run the amp and sub. So

i'm really appreciate if any one can help me out or give me some of advice

to set up my system to it's top performance. Thank You

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Re: Alpine MRV-1507 Running 2 Alpine Type R 1242D

Im looking at purchasing one of these amps ( mrv-1507 ) and i have a rockford fosgate T1 15" it has dual 4ohm coils, would this amp be suited? if so how would u reccomend i wire it?

Posted on Jun 13, 2010

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Re: 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.


Posted on Nov 15, 2007

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1 Answer

I need to know what the wattage the alpine mrv-f407 puts out when its bridged or only running 2 channels?

RMS Continuous Power (at 12.0V)
Per channel into 4 ohms...............40W, 0.08% THD
Per channel into 2 ohms ..............50W, 0.3% THD
Bridged into 4 ohms.....................100W, 0.3% THD

RMS Continuous Power (at 14.4V)
Per channel into 4 ohms...............60W, 0.08% THD
Per channel into 2 ohms...............80W, 0.3% THD
Bridged into 4 ohms.....................160W, 0.3% THD
Max. Power (at 14.4V)
Per channel into 4 Ohms..............120W
Bridged into 4 Ohms....................320W
This should help.

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How much is this mrv t320 amp and is it good for a 12 p3 rockfordfosgate?

If the Alpine is run bridged at a 4 ohm impedance then yes this would be fine. The amp is 400 Watts x 1 at 4 ohms. The P3 ha a 500 Watt rms rating. Just verify the impedance of your speaker. If you have a DVC 4 ohm speaker if wired in parallel you would present a 2 ohm impedance to the amp, that is bad. What is the impedance of your speaker?

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I have 2 dvc 4 ohm alpine type r 15's and 2 svc american bass

Hi mate very nice amp you got there here is the specs for it

Model: MA Audio HK401SX
Hard Kore Series 1800 Watt 1 Channel High Performance Class X Car Amplifier
1 x 1800W RMS @ 0.5 Ohm Mono
1 x 1200W RMS @ 1 Ohm Mono
1 x 650W RMS @ 2 Ohm Mono
1 x 500W RMS @ 4 Ohm Mono
Fully Unregulated MOSFET Power Supply
2 Ohm Stable @ Mono
1 Ohm Stable @ Mono
0.5 Ohm Stable @ Mono

if you have 2 12s just bridge them and you will have 650wrms at 2ohm running to them or one sub at 4 ohm 500w rms ps they should pump iam running 2 12s with just 360rms at 2ohm and they do the job good luck

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Installing two amps

No, thats what you don't what to do. Even if you have 2 matching amps you don't do that. Every amp puts out different, and for 2 subs, you want to play at the the same time. If your only running 2 10's, I personal would just run the alpine (it's a mono amp made especially for subs) thats plenty for what you have. make sure you bridge them to get the full response. And your other amp i would use for your highs or mids, but run it @ stereo , which is 300 w @ 4 ohms. (Note: 600w @ 2ohms would be bridged and would play in Mono)

Building Competition stereo's is a big hobby of mine.

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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 :)


Apr 06, 2009 | 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
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:

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Wiring my subs to my alpine mrv-1000

did you read your instruction manual. does it says "it could be bridged to other amp"?. you can't make a bridge to amplifier that is not bridgeable. bridging an amp is a way which it is made through transistor type ampilfier by bridging more transistor inside and more voltage is required for bridging.
I don't know if we could do to an IC type amplifier. ask an experts about bridging IC types how to bridge maybe they know how.
and if you had an successful bridging, you may have a problem through your speakers, they may hit hard but you will experience some errors through your speakers and easy to worn.

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