Question about Alpine MRD-M1005 Car Audio Amplifier

1 Answer

V-12 amp my amplipier protection indicator light turns every time i raise the volume and then the amplipier shuts off

Posted by on

  • sabre01 Oct 01, 2008

    I have a mrv f340 and whenever i turn the head unit up to a normal listening volume the amp goes into protection mode for 10 seconds. Any help much appreciated

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 34 Answers

Make sure you have the speakers wired up correctly to the amp and that there are no shorts in the wires.

Posted on Oct 07, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

I have a 250 watt radio shack amp. it comes on but when the volume is raised to about half the protection light flashes and the amp shuts down until i lower the volume.


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Aug 16, 2011 | Radio Shack 250 Watt PA Amplifier...

1 Answer

My amp cuts off every time I turn it on.. even with n without the wires connected!!!! N if I do cut it on the volume is on -7 n cuts off automatically n won't come back on unless I replug n plug it up...


Does the "protect" light turn's on when it shuts off? If it does then theres a problem with your wiring or worse this might be a Thermal Protect. The amp shuts off because its lacking of voltage from your battery & alternator. Post your system so i could help you further.

Apr 11, 2011 | Yamaha Audio Players & Recorders

1 Answer

I have a Cambridge Azur 640A amp, every time I turn the volume up to over 12 oclock the amp shuts down. Can this be changed? I presume this is a safety mode on the amp. Can you help?


Yes, you are right. That's a protection feature to prevent burnouts. Typically it appears when your speakers are sucking up a lot of load from the amp. Please check your speaker impedance and the amps' output impedance and ensure the wiring are properly done. Some amps are soo sensitive that they may cut-off after certain level due to overload.

Jan 06, 2011 | Cambridge Audio Azur 640A Amplifier

2 Answers

My sony xplod 1200 whatt amps red light keeps coming on all the wires are good when it gos to hit it gos red


check your ohm load on the sub and see if your amp can do the same, That is why every time it shuts off into protection mode. Check your gain level on the amp to this is not a volume knob for your amp, It is to get both the amp and cd player on the same page. Hope this was helpfull

May 19, 2010 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

The signal select is set to analog but it still turns off when the volume is slightly turned up, can you tell me why?


Sounds like the receiver is defaulting to "protect mode", this indicates that there is an electrical short present in the system, I have found that speakers or speaker wires tend to be the cause often.
Disconnect all speaker wires at the back of the receiver, turn receiver on and raise the volume control and see if the receiver still shuts down, if the receiver doesn't shut off, then one of the speakers or speaker wires are bad, reconnect one speaker at a time, raise volume and see if the speaker you connected causes the receiver to shut down, if not continue connecting the speakers one at a time, testing to see if the receiver shuts down after each speaker connected, when the receiver faults to "protect mode" again after you have connected a speaker then you know that the last speaker you connected is the "blown" or shorted speasker or wire.If the receiver still shuts off after disconnecting all speaker wires, then either one of your sources has a problem(DVD,CDplayer,cass deck,etc.) or the receiver has an internal short that will have to be repaired by a servicer.

Good Luck !

Feb 14, 2010 | Pioneer VSX-D412 Receiver

1 Answer

Every time i turn up my volume the red light on my kenwood kac9104d flashes and it skips beats i am pushing one 12 inch almani dvc 4ohms 500rms anybody know why it is doing this cause i just ordered two...


sounds like your speakers are "clipping" drawing more power than the head unit or amp can handle. Or the speaker coil is damaged. Turn off amp and slowly raise the volume, and see if it still does the same

Feb 01, 2010 | Kenwood KAC-9104D Car Audio Amplifier

1 Answer

Receiver shuts off when volume raised above 10


A fuse breaker or resetting electronic componet device attaced to the audio receiver protects the amp & speakers for destruction! The quality of the amp ,spkers& spks. wires help on choosing for protection shut downs! Of course at 10 volume you risk all of the amp in the receiver , buy a higher quality brand reciever ,intergrated amp, single amp . BE CAREFUL AT THE HIGHER VOLUME RATINGS YOU RISK HEARING DAMAGE! FOR REAL!

Feb 04, 2009 | Philips FR975 Receiver

1 Answer

Amp protection light comes on when raising volume...


It sounds like you either have too low of an ohm load or the voltage is dropping at the amplifier's power terminal.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.


If the voltage remains near or above 12v, disconnect one speaker and see if it shuts down. If it doesn't, disconnect that speaker and connect the other speaker. If it only shuts down with both speakers connected and the voltage is staying above 12v, the ohm load is probably too low and you'll need to rewire the speakers.

Dec 31, 2007 | DB Drive A460 Car Audio Amplifier

4 Answers

Amp switches off at about -10db volume level


I suppose that on all speakers connections + (positive) is on +, and - (negative) is on - ?

Oct 08, 2007 | Yamaha HTR-5830 Receiver

Not finding what you are looking for?
Alpine MRD-M1005 Car Audio Amplifier Logo

Related Topics:

69 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4807 Answers

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Jaime Hernandez

Level 3 Expert

2296 Answers

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

Answer questions

Manuals & User Guides

Loading...