-=Current draw=-

xpl0it
10+ year member

CarAudio.com Elite
How much current would 3000 watts be pulling, from a powerbass XA-3000D that is. I'm going to run it off my optima yellow top and one or a few kinetik hc800s. I want a really nice alternator that will supply the amp sufficiently. The iraggi alt i was looking at (115a idle 240a max) doesn't seem practical. I would like an alternator that idled much higher. I don't want to spend anymore than 350, 300 would be ideal.

 
alternator isn't where you want to pinch pennies. seriously though i'd go for a 300amp alt at this point cuz if you upgrade it's gonna be needed. i'm a penny pincher myself but if you don't have clean steady power for your amps to run on why have them?

 
you dont' think 115idle, 240 max on an optima and an hc800 or two would be enough for a powerbass xa-3000d? I just want above 13v to the amp, ideal is 13.8-14v

 
i'm cheap/poor and have wife naggin me all the time yet to me having 3kw on tap but not being positive you've got enough power to juice it up makes little to no sense. even if it's "enough" what if you decide to upgrade later or decide to throw acouple monitors, or upgrade frontstage amp.

EDIT= i know somewhere here there is a post with how to tell how much your amp is gonna draw but i don't know. i'm in same boat as you, gonna install my 1 acoustiks 3000db and hopefully a 2nd within 3months.

 
3000w could draw around 208.3ampers of current max.
the forumula is (3000w)/14.4v= 208.3ampers
You forgot to account for efficiency young Jedi.

I don't know off hand...but say, for example, that amplifier is 70% efficienct.

(3000*1.3)/14.4V = 270.8A

And on a more realistic 13.8V electrical system;

(3000*1.3)/13.8V = 282.6A

 
as i said in theory, and said in reality it would be far less

upon further review i didnt say in theory, i meant to tho. perhaps im too old school to be helping these folks, maybe i should just stick with the lounge

and who you calling young jedi? if anything your the padiwan

 
as i said in theory, and said in reality it would be far less
upon further review i didnt say in theory, i meant to tho.
Even "in theory" it wouldn't be 208A maximum draw due to efficiency //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

maybe i should just stick with the lounge
Good idea //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif

 
even if the info isnt 100% correct, it was still about 70% right
See, now there you properly accounted for your efficiency //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

I'm so funny.

 
See, now there you properly accounted for your efficiency //content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

I'm so funny.
lol...

 
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xpl0it

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