Question about Alpine MRP-M450 Car Audio Amplifier

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Alpine MRP M450 Problem

Well i jus recently purchased and installed this amp into my car and was running fine for a little bit but then the amp turns off and so does the light...i turn off my car and check my wires and they all seem to be fine so i turn my car on and its working again...why does it turn on and off like that what could the probelm be??.....me and my friends think it could be my remote wire but were not sure....like right now its running but it turns sometimes...is there anything i can do...

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There could be several problems, you may be overloading the amplififier so check if it can handle 4 OHM or 2 OHM, if it turns off at high volume it may be overloaded. Try an 8 OHM load. if it still turns off it may be an internal problem

Posted on Jan 07, 2008

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Sounds like it is getting too hot and a thermal overheat protection switch is shutting it off. Check to make sure your gain isnt over 3/4.

Posted on Dec 06, 2007

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1 Answer

Just bought a alpine mrp-m450 amp and It turns on, I have my rca input connected and my output to my sub but my sub isn't making any noise, my sub is fine I just tested it


make sure the protection light isn't on. Also, make sure your are getting signal through the rca's. you may have to turn the sub on, in the radio settings.

I’m happy to help further over the phone at https://www.6ya.com/expert/chris_7f7f91eb941fb23f

Dec 27, 2014 | Car Audio & Video

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I have a 900 watt amp wired to 2 mtx 12's. it powers up fine but when the bass hits the power light fades away


Try using a 4ga ground cable. Ground it to the frame of your car. And use a 2ga and a inline fuse 100amp run this to your battery. And you need a cap. A 1000 watt will work good. Hope this helps....

Feb 08, 2014 | Alpine MRP-M450 Car Audio Amplifier

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Alpine amplifiers fade in and out durring high volume bass hits


main problem i think you are having is your loosing power when it kicks a note.. get a power cap! power caps feed your amps constant power! this will solve your problem :)

Jan 06, 2009 | Alpine MRP-M450 Car Audio Amplifier

2 Answers

Amp light flickering


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

Jun 30, 2008 | Alpine MRP-M450 Car Audio Amplifier

1 Answer

Not enough bass


its prolly the deck, did you try turning the alpine's input gain controls up...

its not the wiring, if the wiring was insuficient, it would just melt...

you might also see if you could adjust the bass frequencies or crossover frequency, the crv might just have a different resonant frequency then the rav 4

May 16, 2008 | Alpine MRP-M450 Car Audio Amplifier

1 Answer

My Alpine m450 amp light is on but no sound


make sure your RCA's are plugged into the input and not the pass through

Mar 28, 2008 | Alpine MRP-M450 Car Audio Amplifier

1 Answer

MRP-M450 puts out no sound to the subs


The amplifier may be overloaded, check to see if it can handle 4 OHM loads and 2 OHM loads. if it turns off at high volume the amp may be overloaded. if so try a 8 OHM load. if it still turns off it may be an internal problem.

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Alpine mrd-m500


Hi SPDGOD,

 

Could not find exact, but close manual.  It is the MRP-M450 mono block amp from alpine.

 

Go to this url and view in Adobe. Print it if you need to

http://vault.alpine-usa.com/products/documents/OM_MRP-M450.PDF

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1 Answer

Just died out..


Have you determined if the problem is with the amplifier or the subwoofer?

 

Have you checked the wiring to make sure that there are no loose connections?

Oct 18, 2007 | Alpine MRP-M450 Car Audio Amplifier

2 Answers

Alpine mrp-m450 Amp won't stay on


im having the same problem with my amp, I took it to best buy and they said the amp was recieving power and recieving signals from the deck and i had everything hooked up right but that in the circuit board all the connections were blown, meaning i have a blown amp, i hope this isnt your problem but it definetly sounds like it. GOODLUCK

Nov 12, 2006 | Alpine MRP-M450 Car Audio Amplifier

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