Question about Alpine MRP-M450 Car Audio Amplifier
I bought 2 alpine mrp-m450 monoblock amplifiers brand new less than 6 months ago. they had been working fine for quite some time, then i noticed one day that the bass coming from them had decreased noticeably and at almost full volume you could hear a steady note ( or one that was supposed to be steady) get louder and quieter during the note. you could also see the subs (2 kicker cvrs, one per amp. each amp at 2 ohms) kind of fading in and out. they would move to the correct excursion, then during the supposed to be constant note, loose power and not move as far, and so forth. i took out the amplifiers and noticed there was condensation on the outside of the amp. i let them sit in my room for a week to dry out, put them back in, they worked like new. may have been a coincidence i dont know. well they are doing it again and there is no condensation on them or in them. any ideas as to the problem? my grounds and pos wire connections are fine. speaker connections are fine. i dont know what the problem could be. thanks
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 :)
Posted on Apr 20, 2009
Moisture probable settled in the amps and now the boards are acting up try getting new amps and see if that helps i would recommend getting a 2 sub box with a shared port hole and run it off a bigger amp 1000 watt max that way u can have alot more bass
Posted on Jul 25, 2010
Sounds like the amps needing more current available to it-You should have 4 gauge power coming off the battery going into a distribution block from there a 4 gauge to a 1 farad capacitor off the block -4 gauge to the ground for the capacitor -and two + leads from the block to your amps-you would do well with 6 gauge there.- That is to ensure that you have plenty of power on tap when needed and not trying to draw it off your charging system on heavy current demands.Make sure that your grounds are well placed and solidly connected. As for putting 600+watts on a pair of 8z......i hope that they are the CVR or the L5 / L7 series to take that much power,I've seen it done and the ones i heard sounded badass(L7 series)-but that was at the stereo shop so they had they stuff on HITTN status up in there. If your running the "cvr" or the "comp" series you might be throwing too much power on them -might want to step up your subs to a set of 12s just to get more air moving in there- good luck
Posted on May 28, 2009
Sounds to me like it might be the remote turn on because the first time i installed it, it did the same thing, and i found out that there is two blue wires coming out the stereo, one with a white stripe, i connected it to the blue wire, and it didnt work, then i connected it to the blue and white wire, and it worked. Well hope this solves your problem, goodluck.
Posted on Jul 06, 2009
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Posted on Jan 02, 2017
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Could not find exact, but close manual. It is the MRP-M450 mono block amp from alpine.
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