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whojohnjones
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my battery voltage wont go past 12.4 vlts with amp power line connected (even with amp off) and after a while my car battery will be low enough so it wont crank everything else will work but wont crank but if i disconnect the line from inline fuse the volts will go up...is my battery too small or what

memphis mcd-1000 amp running at two ohms

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Check all of your wiring. I'm running a 760 watt to my subs and an 800 to my doors and it does fine. It sounds like you're losing voltage somewhere so that would be the first thing i checked. After that, it could be your alternator.

 
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