Question about Alpine MRP-M450 Car Audio Amplifier

2 Answers

Amp light flickering

Ok so today it was kinda muggy i had my windows down i have a chevy 2500HD with a CVR12 kicker with the alpine MRP M450 in a vented box (which i just got yesturday)... anyways my sub is turning on and off... the amp has power and so does the head unit... i have know clue what is wrong... and also after the sub stops working i look at the amp and the blue light is kinda flickering, not shuting off but diming then coming back then diming then coming back... and this only happens when the sub is not working... i have no clue and im getting realy upset with this thing... if you could please help... thank you!
Evan

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  • ryguy5190 Jun 30, 2008

    I'm currently having the same problem.
    My alpine amp's blue power light on it keeps flickering on and off, so it's obvious that the power is not steady to it for some reason. I know nothings blown because it was doing this like 3 weeks ago and then all of a sudden it worked fine, but now it's back to doing this.


  • Anonymous Mar 25, 2009

    Alpine mrp m650 amp. was working just fine and then stopped played around wit wires and worked. So i w ould assume bad onnet some where.



    Tested power wire (it reads 14.57v) so the power and ground is good as far as power going through.



    Stero wire is conneted fine to head unit and amp.



    The light some times comes on but not for long. Through browsing the internet i found to connect battery to stereo it now will ome on bright and solid but flikering alot will put out bass one tenth of the time during a song

  • ryguy5190 May 11, 2010

    Thanks howdoiuhhhh.
    My connection to the battery was a little lose so i tightened the bolt right to it and now it works fine!
    I really appreciate it.


  • Anonymous Mar 16, 2014

    My head unit has a remote turn-on lead for an amplifier. I have attached that were it goes between the positive and negative terminals on the back of the amp. When I turn on my system, the blue light on the top of the amp turns on just for a second and then off again. I cannot get the amp to stay on. I by-passed the remote turn-on and went right to an accessory plug in the fuse box and same thing. Any ideas?

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Do you have a capacitor its like an extra battery, if you turn the volume way up with cvr's pullin big power, it cuts out because theres not a steady flow of power.... hope this helps

Posted on Jul 04, 2008

  • howdoiuhhhh Jul 04, 2008

    oh yea sorry ryguy, check your power connections under the hood, CHECK FOR A GOOD GROUND, this is the reason for lots of problems.........

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You should also check your remote turn on wire

Posted on Jul 04, 2009

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