|12-19-2009, 05:24 AM||#1|
What is HD?
Join Date: Dec 2009
CAR AUDIO : Determine Your Ampere's Pull
This is all Information I myself have gathered from the MECP Installers Guide book.
Alright Here's the Question!
I am trying to figure out how much pull on my alternator I am getting from the amp.
Here is the formula We use to figure this out
I = (Po - n*Po + Po) / V
I = amperes
So for me its:
I = (3000 - .8*3000 + 3000) / 13.8
So I do this
3000*.8 and i get 2400
260.87 This is my amperage draw correct?
and if I'm correct for everyone else heres an easier equation for this:
I = (2-n)Po/V
So for me this would go
1. 2-.8 =1.2
And there we go. 260.87!!!!!
Now, We must remember that Most Class D Amplifiers have a 80% Efficiency Rating and Most Class A/B Amplifiers have a 60-70% efficiency Rating!