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<blockquote data-quote="boxpunch" data-source="post: 8305383" data-attributes="member: 655113">1- there&#039;s no set mathematical way to figure that out. If your vehicle&#039;s alt case can be built to 320a then you&#039;re covered to approximately 7k (with a few group 31 batteries). Although we have a customer with a 7k full tilt seeing 13v+ with only 4 kinetik 2400&#039;s and one of our 270&#039;s.2- with music being dynamic (rise and fall) yes the amp will see nominal load and possibly lower. If you take a look at the impedance/frequency graph given with the specs of the sub you&#039;ll see there are frequencies where the sub&#039;s resistance is less than the nominal impedance.3- if you&#039;re going to demo with the truck off all the time, you&#039;re going to need a big bank of batteries to support your system without a charging source. Then you&#039;ll need to maintenance charge your battery bank after to ensure proper charging levels as well as prolong the life of the batteries.</blockquote>

[QUOTE="boxpunch, post: 8305383, member: 655113"] 1- there's no set mathematical way to figure that out. If your vehicle's alt case can be built to 320a then you're covered to approximately 7k (with a few group 31 batteries). Although we have a customer with a 7k full tilt seeing 13v+ with only 4 kinetik 2400's and one of our 270's. 2- with music being dynamic (rise and fall) yes the amp will see nominal load and possibly lower. If you take a look at the impedance/frequency graph given with the specs of the sub you'll see there are frequencies where the sub's resistance is less than the nominal impedance. 3- if you're going to demo with the truck off all the time, you're going to need a big bank of batteries to support your system without a charging source. Then you'll need to maintenance charge your battery bank after to ensure proper charging levels as well as prolong the life of the batteries. [/QUOTE]

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