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<blockquote data-quote="TheUnderFighter" data-source="post: 7666102" data-attributes="member: 631325">No I wouldn&#039;t think you would. You MIGHT... but I wouldn&#039;t think so. I have a stock 70a alt, and my oem battery, with only a big 3 upgrade done for electrical. I&#039;ve got an eD 9.1 and 9.4 running for a combined 1500w @ 12v. These are also pretty inefficient amps, and I have no voltage problems or dimming problems.The Sundown amps are known for their efficiency, and you&#039;re running a bit more power than me, with a better battery and over twice as strong of an alternator.Everybody&#039;s car is different, so you can never know until you try it, but I think you&#039;ll be ok with a big 3. I&#039;ve heard the yellow-tops aren&#039;t really ideal for car audio, so maybe just put the Kinetic under the hood? Either way, I wouldn&#039;t really be concerned with running an extra battery in the back. Maybe at the most a little HC600 or something in the back. That&#039;s just my input though, maybe someone else will know more about how your car does with bigger systems and what not.</blockquote>

[QUOTE="TheUnderFighter, post: 7666102, member: 631325"] No I wouldn't think you would. You MIGHT... but I wouldn't think so. I have a stock 70a alt, and my oem battery, with only a big 3 upgrade done for electrical. I've got an eD 9.1 and 9.4 running for a combined 1500w @ 12v. These are also pretty inefficient amps, and I have no voltage problems or dimming problems. The Sundown amps are known for their efficiency, and you're running a bit more power than me, with a better battery and over twice as strong of an alternator. Everybody's car is different, so you can never know until you try it, but I think you'll be ok with a big 3. I've heard the yellow-tops aren't really ideal for car audio, so maybe just put the Kinetic under the hood? Either way, I wouldn't really be concerned with running an extra battery in the back. Maybe at the most a little HC600 or something in the back. That's just my input though, maybe someone else will know more about how your car does with bigger systems and what not. [/QUOTE]

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