Question about Alpine MRP-M650 Car Audio Amplifier
I was driving down the freeway about a week ago when my sub stopped bumping. I have a Kenwood amp as well as the Alpine. I took my car to Direct Car Audio where they tested my amps on another sub and they said the Alpine is "no good", by which I assumed they meant blown. But since then I've noticed that at times the amp does power my sub, but it goes out whenever I turn the volume too high and does not come back. But if I turn my car off and on, then it comes back again. And lately I've been having trouble starting my car...so I'm thinking maybe it's a problem with my battery? Also, the sound quality doesn't sound as good as it did before...
Oh and the amp's light stays on. But the day it went out for the first time, I touched the amp and it was very very hot.
Would Best Buy be able to diagnose the problem?
As far as it staying on it may have been wired to your hot unstead of your remote on your radio
when it runs wide open it gets hot
how are your gains
I have an alpine and I just hooked up jl 12 w3s and it kinda j did what yours did
it played.. hit hard then no subs.. my mids and highs platyed, but until I would turn off the car and restart the radio the subs immediately came on and the subs are only connected to this aplpine mrp m 650 amp
what speakers and what ohm did they wire it too?
i think my problem was I was overloading my amp feeding it a 2 ohm load or a one ohm load and it was shutting down my subs.. protectection I suppose?
Posted on Jun 19, 2008
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Posted on Jan 02, 2017
is the remote lead properly connected to the head unit? if the power led is on then the power cable and earth must be good, check the remote lead 2 your head unit first, if thats all good try looking at the amp to see whether theres a small switch to adjust the output going to the subs, if its very low or right off then nothing will be going through to the subs. if its on high and fine it only realy leaves the neg and pos inputs from the amp 2 the subs.
Posted on Nov 18, 2007
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