Question about Alpine MRP-M650 Car Audio Amplifier

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Subs dont work when base is up high

The amp only plays the bass whenmy volume is low but when i turn the volume up it turns off i have two alpine amps one is the 4channel MRP-F450 and the other is a mono MRP-M650. My 4 channel is powering my front and rear speakers and my mono is powering my 2 8inch kickers. the 4 channel isn't my problem it's my mono amp when i turn the base up very high and crank the volume up my subs pop they stop working so i have to turn off my stero and turn the volume down. then turn my base down to be able to turn up the volume up. the amp is supose to be able to power two little 8inch kicker subs right? i don't know i need some help. my freind has two twelves and only a 600watt amp and it sound great. so what could be wrong with mine? and how do i get a deeper sounding base instead of them just hit hard and no real deep boom. Oh i have 16 gauge monster wire going from the amp to the subs.

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  • Frank Gattuso May 11, 2010

    what ohm are your subs? dual voice coil or single? thanks

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  • 149 Answers

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

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