Question about Alpine MRP-M350 Car Audio Amplifier

1 Answer

Weak output from sub..

i've got a pioneer 10" w/ an alpine MRP-M350. When i first installed it everything was great and i was pretty amazed with what i was getting out of them for the price i paid. My friend just recently bought 2 Alpine Type S 12" subs with some boss amp and wanted to put them in my car as his was not ready for them yet so we could try them. So i disconnected mine (i have a station wagon btw) and put his in the back and hooked them up. I left my sub in, and i organised them so they were facing each other thinking nothing of it. Left them in for a couple of days..pretty much had them cranked...and noticed that my sub moved a fair bit even though it wasn't connected. Now i went to hook mine back up the other day...and it seems like theres no way near as much power compared to what there used to be. i know it may be a big difference in sound compared to the 12's...but i still used to get some volume out of the 10". I also had to re-solder the RCA cables as one was a bit flimsy. Could it be that because i had the 12's facing my sub that it's affected it? somebody said something about demagnitization? or could it just be that i need to replace the RCA cables?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 631 Answers
Re: weak output from sub..

The woofer was not demagnetized.

If one signal cable is damaged, it could reduce the signal getting to the amplifier and could reduce the output.

Plug one RCA plug in at a time to confirm that both are working properly. If one is lower or not working, the cable may be defective.

If both work properly, double-check the settings on the head unit (sub-out, bass, crossover frequency...)

Posted on Oct 28, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have one alpine type R 12 SWR-12D4 1000 watts rms-3000 watts peak, and I have it hooked up to the Alpine MRP-M500 mono power amp (500w RMS+1 at 2 ohms and 300w RMS+2 at 4 ohms) I have all great...

I usually run an extra pair of RCA's when I do an install. This way if you have a problem with one you're already set or if you upgrade you won't have to tare you car apart again.

Apr 03, 2013 | Alpine MRP-M350 Car Audio Amplifier

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.

Mar 08, 2011 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

I have a Alpine MRP-M350 amp and then I have 2 10 Kicker Freair F10A Subwoofers. What's the best set up for this combo?

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

Feb 06, 2011 | Alpine MRP-M350 Car Audio Amplifier

1 Answer

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.

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 sound from subs.

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.

Jan 03, 2009 | Alpine MRP-M350 Car Audio Amplifier

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 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

May 16, 2008 | Alpine MRP-M450 Car Audio Amplifier

1 Answer

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

Not finding what you are looking for?
Alpine MRP-M350 Car Audio Amplifier Logo

Related Topics:

89 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Car Amplifiers Experts

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1128 Answers

Are you an Alpine Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides