Question about Alpine MRA-D550 Car Audio Amplifier

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I have a Alpine Mra d550 and it keeps on shutting

I have a Alpine Mra d550 and it keeps going in to protect mode when I tune up the volume. Even when there is no speaker wires connected to it.

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Buy a new amp.

Posted on Nov 15, 2009

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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.

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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.

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My alpine cda 9883


It sounds like it was hooked up incorrectly, and possibly a wire is loose... i would have it checked out professionally before something happens. The other possibility is that it is overheating and is going into "protect mode"... as i said... i would get it looked at professionally.

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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

My samsung HT-TX75 keeps shutting off in a few minutes saying protection.


protection mode activated to protect from serious damage and please follow me.1-shut down your system2-make volume in low position3-remove all your connected speaker4-switch your system on and watch if it does not go to protect mode insert your speaker one by one until you find the bad one and change it and start with cable change first and then speaker itself-if it goes to protect mode you must call service center.

Jul 07, 2008 | Audio Players & Recorders

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

Volume.


one of your seakers is faulty unit into protection mode

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1 Answer

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


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.

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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

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