Question about Alpine MRA-F350 Car Audio Amplifier

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No sound from speakers after mra-f350 connected to alpine w205

I just connected the alpine mra-f350 to my W205 head unit via the AI Net cable, then connected the power and speaker leads to the amp.  The amp powers up, but no sound will come out.   Tried to see if something had to be turned on / set on the head unit by going through the source menus, but nothing worked.   any idea what the problem could be?

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Re: no sound from speakers after mra-f350 connected to...

Did you set the digital output to the on position on the bottom of the head unit?

You have to switch the head unit off then back on for it to recognize the position of the switch.

Posted on Oct 27, 2007

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I have an alpine player in my car and im trying to install imprint but when i try to measure with the mic it gives me an error code -3(cannot detect front left speaker) how can i fix that?

Hello drmer17,

You do not say which Alpine head unit you are trying to use Imprint to adjust. If the receiver has the Ai-NET input and you are using Alpine's KTX-H100 tuning kit, make sure the Imprint crossover switch setting matches up with your speaker/subwoofer configuration. Also, I'd check the cables and remove and reseat them. Try switching the left/right channels and measure again. If the problem then switches to the right front speaker, you probably have a defective Imprint.

Hope this helps.

Jun 12, 2009 | Alpine MRD-M501 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

Volume will not go passed 4

The amp requires a compatible Ai-net Alpine head unit to operate it. I bought one too and didnt know this and im still trying to put all of the peices together to create a working stereo system without buying everything all over again.

Nov 25, 2008 | Alpine MRA-F350 Car Audio Amplifier

1 Answer

Inconsistant Switching of Alpine MRA-F350 Amp

try and unplug the audiovox unit and check if problems still exist. and what swithes on what unit are you talking about? this kind of sounds like a wiring problem.

Nov 21, 2008 | Alpine MRA-F350 Car Audio Amplifier

1 Answer

No radio sound from my IVA-D310E

neither of those units use fibre optic cables! but it sounds like you puled out the antenna wire behind the head unit. if you try and search radio stations without the manual tune on and it keeps changing frequency on it and never stops then its the antenna plug.

Nov 13, 2008 | Alpine MRA-F350 Car Audio Amplifier

1 Answer

Hooking the mra-f350 to my highs

You will only need to connect the door speakers to the MRA-F350. In short, the connections will be as follows:

Deck---->MRA-F350 amp---->Door speakers
...................................\---->Sub amp---->Sub(s)

Just make sure you use the optical digital output of the deck to connect to the optical digital input of the MRA-F350 amp, not the RCA preamp connections.

Mar 13, 2008 | Alpine MRA-F350 Car Audio Amplifier

1 Answer

Alpine mra-d-550 car audio amplifier

Sorry man here's what i pulled from the internet- Crutchfield sells these:
Note: The MRA-D550 requires a compatible head unit for setup and control, it cannot be used without one. The current list of compatible head units includes (but is not limited to): IVA-D300, IVA-D310, IVA-D900, IVA-D901, DVA-9860, and DVA-9965.

Oct 22, 2007 | Alpine MRA-D550 Car Audio Amplifier

2 Answers

Help with my goodmans car stereo

Check Your voltage coming in AT your 12volt power wire   and them check voltage on your Power Remote wire and make sure you have both of them.....  Next Check your RCA's For signals.    IF  all that is  checked out to be good then you have a bad board in your amp.

Oct 06, 2007 | Alpine MRA-F350 Car Audio Amplifier

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