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Do I need a bigger alternator?

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=67642
Printed Date: May 10, 2024 at 10:07 AM


Topic: Do I need a bigger alternator?

Posted By: ryan2100
Subject: Do I need a bigger alternator?
Date Posted: December 04, 2005 at 5:32 PM

In my 350z i will be running about 1000watts of total power to my sub and speakers.  There will be two amps, a diamond audio D7152 running 600x1 @4ohm, and a diamond d7104 running 100x4 @4ohm.  Diamond provides a rough estimate on the amperage of each speaker which says it is 100amps for the D7152 running at 600x1 and 66amps running at the 100x4.  I believe that this makes the total amperage on my car 166.  Will i be able to run these amps on my car alternator/battery or do I need an upgrade of some sort.

Thanks

Ryan




Replies:

Posted By: dwarren
Date Posted: December 04, 2005 at 5:47 PM
Find out the output of your stock alternator. Then factor in other accessories you might use, like head lights, heater, etc. Your chances are unlikely with that sort of draw.

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Posted By: geepherder
Date Posted: December 04, 2005 at 5:48 PM
Wow- if those numbers are accurate, those are some power-hungry amps.  Definitely upgrade your alt.  Look for one rated at 200+ amps.  The big 3 is a must as well- do a search if you're unsure about what this entails.

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My ex once told me I have a perfect face for radio.




Posted By: Alpine Guy
Date Posted: December 04, 2005 at 10:57 PM
Since you spent that much money into getting everything of such high quality, you may as whell back them up with a more than powerful electrical system such as a replacement battery for that factory nissan battery, look into the kenetik batterys everyone is talking about, and definately send them an e-mail at  www.mechman.com  for a high quality unit. 

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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.




Posted By: haemphyst
Date Posted: December 05, 2005 at 10:06 AM
YES, you will need an upgrade in the alternator department. There is no stock alternator in the world that will handle an ADDITIONAL (potential) 166A load, or even an additional (potential) 100A load... Save yourself the headaches, and do the alternator and Big 3...

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."





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