Question about Alpine MRP-M350 Car Audio Amplifier

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Alpine MRP-M350 amp intermittently turns off

I've had this amp for about 4 years now.  Until recently, I had not had one single problem with it.  Now, the amp turns off (blue LED not lit) whenever I push my subwoofer EQ above +5 (it is supposed to be able to go up to +15) or turn volume above 15 on my Alpine head unit.  The outside of the amp is warm to the touch, but not hot.  The amp will turn off for a few hours and then all of a sudden kick back in.  The two 20 amp fuses have been checked and they are both fine.  Do these amps have an internal temperature sensor that might be kicking off the amp?  If so, how can I cool the amp down so that this doesn't happen?  What other problems might cause this behavior?
Other info:  -amp is connected to 2 12" RF subs -this has been happening the last two days, when it has been warmer outside -the gain on the amp is set to nominal

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  • Ploutz24208 May 27, 2008

    One of the things I tried when I was troubleshooting this was disconnecting the RCA plugs and the speaker wire from the amp.  If the problem was with the subs, the amp should've worked with this "stripped down" version, with just the battery, remote, and ground connected to the amp.  However, the amp again would not turn on, and the blue LED stayed off.  

  • renegade443 Oct 19, 2008

    yes

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Could be your speakers are breaking down inside and shorting out. Measure the ohms of the speakere with them unhooked form the amp. They should be about what the manufacturor rated them at. (useually 4 ohms). If they are failing, the number will be lower. They may also short when power is applied- and that wont show with the meter test.

Try different subs.

Posted on May 27, 2008

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  • 66 Answers

SOURCE: i haw alpine mrp-m350 amplifier how many sub can i

Hook up the MRP-M350 to one 4-ohm sub, and you get 200 watts RMS; connect a second 4-ohm subwoofer and the power output increases to 350 watts! All that juice means that your subs won't just be loud, they'll sound clean and thumping.

Posted on Apr 08, 2010

  • 111 Answers

SOURCE: I have a Alpine MRP-M350

From the plus(+) of the speaker output on the amplifier run a cable to the plus(+) on the voice coil of the first subwoofer then follow thru with the same cable to the plus(+) of the other subwoofer.
From the minus(-) of the speaker output on the amplifier, run a cale to the minus(-) of the first subwoofer then follow thru with the same cable to the minus(-) of the other subwoofer.
This will make your amplifier run @ 2OHMS and provide you with 350 Watt RMS which will work fine even if you run your subwooffers free air(without a box))
hope this helps
dreamsystems

Posted on Feb 06, 2011

  • 111 Answers

SOURCE: i have two 12 inch

You dont specify the model or RMS power of the subwoofers so i am not sure if that power is RMS or maximum.
If it is RMS, then a BiG no would be the answer. Even though the MRP-M350 will drive the subwoofers and will give you a fair sound as well, it not drive both of them effectivley. After all it's only 350WATT (the amp)RMS trying to push a 2500 RMS (the subs) target, so do the maths, is that a fair fight?
hope this helps.
dreamsystems

Posted on Feb 06, 2011

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Posted on Jan 02, 2017

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1 Answer

Alpine MRP-M350 no speaker output


Check the ground wire. If you have a bad ground, you will not have any speaker output. The ground should be solidly connected to the vehicle chassis in a paint-free location. Check the live power wire as well, it should be connected directly to the battery. Then check the speaker leads to the amp. They should not be in contact with the vehicle chassis, or (at the input slots on the amp) with each other.

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I have two 12 inch infinity 1250w subwoofers. Will my alpine v-power mrp-m350 amplifier power the subwoofers effectively?


You dont specify the model or RMS power of the subwoofers so i am not sure if that power is RMS or maximum.
If it is RMS, then a BiG no would be the answer. Even though the MRP-M350 will drive the subwoofers and will give you a fair sound as well, it not drive both of them effectivley. After all it's only 350WATT (the amp)RMS trying to push a 2500 RMS (the subs) target, so do the maths, is that a fair fight?
hope this helps.
dreamsystems

Jan 27, 2011 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

Can I attacch two speakers and a sub to a alpine MRPM352


not really it will under power the sub and probably damage the amp it will work but the current draw from sub will damage the amp, one or the other i sugest

Apr 26, 2010 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

I haw alpine mrp-m350 amplifier how many sub can i


Hook up the MRP-M350 to one 4-ohm sub, and you get 200 watts RMS; connect a second 4-ohm subwoofer and the power output increases to 350 watts! All that juice means that your subs won't just be loud, they'll sound clean and thumping.

Apr 08, 2010 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

No power to the amp


hi there
its up to you the remote wire is just another power wire.....the remote wire can be by passed but every time you turn off your car you will need to unhook the 12v amp power wire from your cars battery (if you decide to do it this way)..........or you can hook up the blue wire from the back of your CD/DVD unit what ever you are using and every time your stereo turns off your amp will too..........
hope this has helped

Mar 08, 2009 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

Amp keeps shutting off


you dont have it bridged right your dropping your ohms down way to low.. when you go to bridge your amp you have a negative and a positive on your amp thats it i have an alpine v-power mrp-m350 i think there identical should be but anyways you have to buy a Y splitter there RCA JACKS its has the 2 ends that plug into your amp than ties into a single one its a male or female adapter the place were your gonna get it w know the trick of these amps when bridging is only keep your left channel cable plugged in to your cd player i think its white colored dont plug the other one in rap tape around it or get a rubber cap and put over it.. run your RCA cables to your location of amp location and do the same just tie that into your left channel and tape or get a rubber cap to put over the other one i wish i could draw you a diagram of it hard to explain when typing it if you have a cell phone or house phone i would prefer you calling me from a cell so i dont get charged a fortune my cell number is 1814-594-2667 call me i will get it working for yeah hope to hear from you soon my name is Brad

Jan 07, 2009 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

No sound from subs.


http://www.pac-audio.com/instructions/C2A-GM24.pdf

Sounds like you have the Remote turn on hooked to constant 12V instead of a switched power.
The Blue/White wire off the module should go directly to the amplifier remote terminal.
If this has a constant 12V when the key is off, the module is defective and needs to be repaired/returned.

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1 Answer

Weak rear left amp output?


hey whats up bud i got an ALPINE V-POWER MRP-M350 these amps are great go to a walmart od any music shop buy a set of R.C.A cables that plug into your amp than that Ys off to a single connection its a male cable that run a set from the back of your cd player heres the trick ONLY PLUG YOUR BLACK COLORED RCA INTO HEAD UNIT MAKE SURE YOU RAP THE RED ONE WITH TAPE OR GET A RUBBER CAP TO PUT OVER IT SO YOU DONT GET ANY STATIC FREQUENCIES COMING OUT OF THE RED ONE THAN RUN THAT SET TO YOUR AMPLIFIER AND AGAIN ONLY TIE INTO THE LEFT CHANNEL OF YOUR AMPLIFIER.... Hope you know wnat i mean by that Y adapter ther is 2 prongs that tie into amplifier than it splits into 1 were your rca cables will plug into just that one thats how you bridge these confusing amps.... TRUST ME BOTH SUBS WILL SLAM HARD I RUN 2 JL AUDIO OFF OF MINE NO PROBLEM.... WRITE BACK TO ME IF YOU HAVE ANY PROBLEMS OR WHEN YOU GET IT HOOKED UP MY EMAIL ADDRESS IS gordo8785@yahoo.com hope to hear from you soon...

Dec 27, 2008 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

Not enough bass


its prolly the deck, did you try turning the alpine's input gain controls up...

its not the wiring, if the wiring was insuficient, it would just melt...

you might also see if you could adjust the bass frequencies or crossover frequency, the crv might just have a different resonant frequency then the rav 4

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Blinking Led power light


I have a alpine MRP-M350 700 watts class D... i will ask if it can support 2 subwoofer a 1200 watts 10" JBL subwoofer?

Aug 22, 2006 | Alpine MRP-M350 Car Audio Amplifier

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