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this year i added a much larger system than i've ever had before and wanted to get some alternator advice. I'm running a 2000 watt system on the boat, all are class D amplifiers. Jl hd 600.4 bridged to 300w rms to my rev10's, jl jx1000.1 at 900w rms to 2 jl w3's , polk pa2000.2 125w rms to 4 xs650's. My question is will a 70amp alternator be enough to keep up? I have two deep cycle marine batteries from costco, i think group 31 but maybe 27's. Theyre the bigger of the two that costco carries- i know that. I'm thinking i should add a 3rd so i have 2 on my stereo bank and one for starting. I don't have access to 120v at my storage either..
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