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Alternator current draw

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=81925
Printed Date: July 04, 2025 at 6:30 AM


Topic: Alternator current draw

Posted By: lincoln2002lse
Subject: Alternator current draw
Date Posted: August 22, 2006 at 4:46 PM

Hey guys,

I am running 3 JL Audio amps

1 300/4

1 450/4

1 1000/1

All are carrying a 2 ohm load. All channels run.  

I have a 2002 Lincoln LSE, with a 3.9 V8 and live in South La. (AC country) with a stock alternator. I just got off the phone with 4 people and the verdict is 50/50 as far as needing a high current alternator to push these amps. 2 say grab a deep cycle battery, and 2 say get an alternator. 

Hummmm,,,  ???




Replies:

Posted By: stevdart
Date Posted: August 22, 2006 at 4:59 PM

1.  Upgrade the Big 3.

2.  Make sure your battery is heavy duty and fairly new.

3.  Install your system.

4.  IF you experience the very noticeable symptoms of lack of current to your car's accessories while playing the system, look into an upgrade to the alternator.  While a lack of current can be missed while listening to a sound system, it will be seen in the headlights.

You're running your components at 2 ohm???



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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.



Posted By: Aruman
Date Posted: August 22, 2006 at 6:18 PM
get an HO Alternatorposted_image

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Shaking The Neighborhood



Posted By: audiocableguy
Date Posted: August 22, 2006 at 8:20 PM
H.O. Alternator, glad no one said CAP!


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