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I have a alpine mrp-m650 amp, had it professionally installed about 14-15 months, with a half faret cap, about 3 weeks ago i was driving home and had it cranked up and started to smell something burning, i immediately shut off the radio and the burning stopped. when i got home i pulled the fuse out from underneath the hood and went to the rear of my jeep to see if i could tell what was burning, hoping that it wasnt the amp. when i got to the rear of the car i "smelt" around and it smelt like it was coming from the cap, but it was dark and i didnt want to mess with it too much then. the next day i got up and went out to look again and turned on the car and the cap and amp and sub were working, that is until i turned up the volume then the sub would cut out and the cap would start to discharge and shut down. today i rewired it, bypassing the cap and went right to the amp, again the same thing would happen, it will play when first turned on but only at low volumes. is there some kind of safety switch that is shutting down the amp so there is no damage it? any ideas at all y this would happen? i thought it might be the ground so i unscrewed it and sanded it down, but it was unsuccessful. any ideas are much appreciated. thanks in advance
Some AMPs have a thermal cutout, that switches the amp off if it gets too HOT.
But this sounds like your amp or sub is screwed, either there is to much resistance in your sub, eg: Burnt voice coil, carbon builds up on the coil stopping the sub from moving freely. Push on the cone of the sub & listen for a scrapeing sound.
or test this by continuity testing the sub terminals & pushing the cone if the BUZZER on the MultiMeter cuts in & out as you push & release then your sub is screwed. ( a certain amount of repeatative pushing it may free up the voice coil.)
or your Amp may have blown a internal fault that will have to be sent of for repair.
Or you have a incorrectly rated fuse for your system,
or the battery cant kope with the power surges???
THIS DOES NOT APPLY TO YOU AS YOU HAVE A POWER-CAP!!!
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Check your speakers and speaker wires to make sure you have no shorts or grounds. Not knowing what vehicle you are putting the amp in, there is also a possibility that there may be a stock amp in the vehicle. If this is the case, you may have to rewire the speakers and bypass the stock amp.
sub spec 250watts per coil you should be just fine I have 2 typr 15s on orion hcca 2500 1 and it kicks a$$ thats 1000 watts over the rated limits of the subs only shut the amp down once these subs can take a lot more power than they say just use your common sence with the volume and gain levels
sounds like a short. did you check the amp fuse and the fuse on the power wire (under the hood) make sure there are no wires touching. most common is the wires to the sub touching on the amp. let me knwo if that helped
Again as I have stated in my other answer to you. You can not wire two SVC 2 ohm subs to acheive a 2 ohm load. more than likely you are running your amp at 1 ohm mono and this is why it is clipping and shutting off.
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?
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.
The built in power supply is probably bad. This supplyds the voltage from the 12volts and inverts it up to 20 to 30 mvolts DC. You will need to get a manual to service this unless you know the inverter circuit really well. good Luck
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