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Message: <blockquote data-quote="helotaxi" data-source="post: 4626300" data-attributes="member: 550915"><p>If the alt can provide the AVERAGE current demand of the system, that's all that matters.  For most really dynamic music the alt simply will not up the amperage quickly enough to keep the voltage from dropping and by the time it DOES up its output the transient is over and the demand is only there to charge the battery.  Depending on the size of the system and what is being played, the continuous draw might be high enough that the stock alt can't meet the average current demand, but the overwhelming majority of normal systems (sorry if you have 4kW on the subs, you're not normal) don't need an upgraded alt and won't see any real benefit from running one.  At idle, you may even create problems because the bigger alts don't usually put out as much as the stock alt at lower RPMs.</p></blockquote><p></p>

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