Question about Alpine Car Audio & Video

1 Answer

I got an alpine apx 1300 300w and the protection light is turned on

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.


    An expert who has answered 1,000 questions.

  • Master
  • 1,689 Answers

Most likely there is a short in the output stage. This would mean changing the output IC's and most likely the damaged support compoenents and driver devices.

The Alpine service rep can fix this for you. Some serious troubleshooting will be required.

The cause of this type of faulure is usualy from the following:

  • Short on the speaker wires, either to ground or to each other.
  • Damaged voice coil or crossover causing too much loading.
  • Power surge due to poor voltage regulation.
  • Playing the unit too loud and having clipping (distortion) in the sound. This usually also damages the speakers.

Jerry G.

Posted on May 29, 2008


1 Suggested Answer

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Alpine MRV-T757: Protection and Music light lite up green and Battery light Flashes Red? Do you know my problem?

check all of you connections especially the earth at the amp and the body of the car

Aug 12, 2010 | Alpine Car Audio & Video

1 Answer

I have a KAC 9152d with a red light on. what is the protect light and normal operating light colors? with the red light on the sound doesnt sound as full as it shoudl be. its running 2 12" alpine type R's...

your ampifier is in protect mode, try to dettache the speaker and turn on it.if the green ligh on ,one of your speaker is deffective but still the red light on theres something wrong with your amp.

Mar 03, 2010 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Power light blinks green and no speaker output on a mrv-1505

the green light says protect above it? and it has a red light for power. then it's in protection mode because the amp see's a fault internally. needs to be brought to a shop for repair.

Sep 14, 2009 | Alpine Car Audio & Video

1 Answer

I have an Alpine MRV-450 and it seems to cut out for 10 minutes and then come back on. The light turns blue while not producing sound. Is it overheating? If so is ther a solution to this problem?

how long before it shutsdown. what impedance are your speakers (single/dual 4ohm? etc) and how are they wired to the amp if it gets real hot and protection kicks on i imagine your speaks need wired different (series instead of parallel)

Nov 27, 2008 | Alpine Car Audio & Video

1 Answer

Alpine mrv-1507

Your amp. got damaged the audio amplifiers IC's thats why it's going on protect mode.

Jun 05, 2008 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Blinking protection light on mrv-t757 amp

Could be the power supply or output stage electrolytic capacitors.
Possibly breaking down/drying out inside.

Mar 17, 2008 | Alpine MRV-T757 Car Audio Amplifier

1 Answer

Lights on, nobody home

Appears to be an issue with current. Is the speaker the correct impedance for the amplifier ? Have you confirmed there are no short circuits in the wiring ? I'm not familiar with this particular product,

The alpine catalogue gives recommended amp/speaker combos. If you don't have an aplpine sub, then look at the specs and find a similar one. You may be trying to load the amp too heavily and it will protect itself.

Nov 18, 2007 | Alpine MRD-M300 Car Audio Amplifier

1 Answer

Car audio problem

Theres a short in the ground connection

Aug 01, 2007 | Alpine CDA-9853 CD Player

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

51 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4930 Answers


Level 2 Expert

150 Answers

Tygh Duval
Tygh Duval

Level 2 Expert

300 Answers

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

Answer questions

Manuals & User Guides