how many amps do i need for about 1500 watts

[Nighthawk1192 10+ year member]

i got a 90 amp alt and want about 1500 watts in my system. if i do the big three and get a new battery will my car be able to handle it? its a 05 hyundai elantra

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[Bassin Buick]

do the big 3 and add a secondary battery.

 

[Bettr n' Revrse 5,000+ posts]

That's all ^^^