Need new Alternator?

[ryanbssc29 10+ year member]

Does anyone know if i would need a new alternator for this system:

Subs: 2 12' Kicker L7's

Amp Phoneinx Gold 1500 wat amp

I know that theres one way to find out lol... but id rather not buy before knowing whether or not i need a new alternator.

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[ryanbssc29 10+ year member]

.........?

 

[andy1234 10+ year member]

what kinda car or even the alt thats in it might help