Sub amp not producing sound........

[stocker08 10+ year member]

My sub amp keeps going into protect. i have 4 gauge power wire coming from my battery which i have split through a distribution block. I have 8 gauge power wire coming from the distribution block going to my Alpine MRP-f450 which powers my 4 speakers. This amp does not turn off. The other 8 gauge power wire coming from the distribution block goes to my 2 channel dual amp(i know) which i have bridged to run my sub. The sub sounds really quite and when i turn the volume up on the head unit, the amp goes into protect.

Today i bought a new amp thinking mabey it was a problem with the s*** amp i am running. I got an Alpine MRP-M350. I have the same problem with this amp. I am thinking that it is not an amp problem. Could it be my Alternator?? It is a 90 amp alt.

Could it be that the sub amp is not recieving enough voltage? Wouldn't the Mrp-F450 shut off too if that was the case.

would the amps act this way if the sub was blown. the sub can handle the wattage being put out by the amps.

Thanks

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[patotay 10+ year member]

change youre wire into bigger power wires bud and clean your ground..

 

[jrwalte 10+ year member]

I'd look to the sub. Give us more information on your sub and how you have it wired. Typically an amp going into protect mode is due to an ohm load it can't handle or a sub gone/going bad.

I think for your power requirements your wire size is good. Get a voltmeter at a local hardware store if you want to verify the voltage your amps are getting.

 

[mrwigglezdj 10+ year member]

that sounds like a bad sub off the bat, and if the one amp doesnt turn off then you dont have it wired correctly to a switched 12v power source

 

[stocker08 10+ year member]

Alright, i will give these a try. Thanks for the help.

 

[patotay 10+ year member]

8 gauge for both?i say 4 gauge atleast for the sub amp..and i think this is just ground problem..

 

[stocker08 10+ year member]

i switched out subs and so far i have not had any problems with either amp. The MRP-M350 only requires 8 gauge power wire.

 

[patotay 10+ year member]

Oic My Bad..=)