6G Celicas Forums

Hi to all,
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

Now

I = amperes
Po=RMS
n=efficiency
V=voltage

So for me its:

I = (3000 - .8*3000 + 3000) / 13.8

So I do this

3000*.8 and i get 2400

3000-2400=600

600+3000

3600/13.8

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
2. 1.2*3000=3600
3. 3600/13.8

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!

Hi guys,
I don't understand why the people recommend me 8" subwoofer
why cannot be 12"?, please i need your advices

-Receiver: 5.1 Sony STR-DH500
-Center speaker: Sony SS-CR3000
-Front speakers: Sony SS-F6000 Floor Standing Speakers
-Rear speakers: Sony SS-B1000
-Subwoofer: i have a active Sony subwoofer model SA-WMSP75 from a Sony HT-DDW750 Home Theater System

My first option was a JBL ES250PBK 12" but now im seriously planing buy a Elemental Designs A2-300
Also i read good reviews about the Acoustic Audio HD-SUB12

But first i would like to know why people recommend me a 8" not 12" sub?
I live in small apartment and i use my home theater only to play movies(horror and action) i love deep and highs bumps!

I hope you can hepl me guys!

I've got interference in my speakers, a high pitch noise matching my cars rev's, I'm sure you know what I’m talking about. I remember from a long time ago, reading that its something to do with the cables being to close to one another, the problem I have is that my battery is in the trunk so I've got little room to move them.

is there anything else I can do?