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<blockquote data-quote="helotaxi" data-source="post: 4843626" data-attributes="member: 550915">Here&#039;s what you have to consider...The alt only produces the current demanded from it.&nbsp; It cannot react instantly to an increase in demand.&nbsp; Your amps don&#039;t produce 2000w continuously and therefore don&#039;t present a continuous current demand to the alt.&nbsp; Musical transients typically are about as long as the response time of the alt.&nbsp; What that means is that by the time the alt responds to the increased current draw from the transient, the transient is already over and the current demand has gone back to its lower level.&nbsp; During that transient, the only thing maintaining the voltage of the system is the battery (or batteries).&nbsp; The battery will float at whatever voltage the alt is charging at and when the transient current demand exceeds the alt&#039;s output, the battery will discharge at that higher voltage initially.&nbsp; When the transient is over, the alt only needs to replace the small amount of charge drained from the battery during that transient.&nbsp; Most people on here have WAY more alt than they need.&nbsp; Most systems used with music don&#039;t even need an alt upgrade or at most a very modest one.&nbsp; 200A alt for a 2000w system is way overkill especially when the battery is doing the work on the musical peaks.</blockquote>

[QUOTE="helotaxi, post: 4843626, member: 550915"] Here's what you have to consider... The alt only produces the current demanded from it. It cannot react instantly to an increase in demand. Your amps don't produce 2000w continuously and therefore don't present a continuous current demand to the alt. Musical transients typically are about as long as the response time of the alt. What that means is that by the time the alt responds to the increased current draw from the transient, the transient is already over and the current demand has gone back to its lower level. During that transient, the only thing maintaining the voltage of the system is the battery (or batteries). The battery will float at whatever voltage the alt is charging at and when the transient current demand exceeds the alt's output, the battery will discharge at that higher voltage initially. When the transient is over, the alt only needs to replace the small amount of charge drained from the battery during that transient. Most people on here have WAY more alt than they need. Most systems used with music don't even need an alt upgrade or at most a very modest one. 200A alt for a 2000w system is way overkill especially when the battery is doing the work on the musical peaks. [/QUOTE]

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