I have a question about battery size and how to figure out how many amp hours you'll need....do I just measure the amps the amp is drawing and go from there?....or is there a formula....I am using 4 Hertz 6x9 HXC 690s...130 watts each RMS 280 watts max each....and PACld10 driver...which I'm sure doesn't use much power.... the amp is either going to be a Polk PA 4000.4 ...125 watts RMS per channel class D has a 40 amp and 35 amp fuse....or it may be an NVX JAD 800.4..... 125 watts per channel RMS....class D ....1600 watts peak...has 3 25 watt fuses...can anyone tell me how many amp hours I will need to have it play for 10 hours....or what other info I need to figure it out?...thanks

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With those amps I don't think you need a line-driver...

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