do I need a larger alternator? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Electrical, Audio, GPS, & 2-Way Radio > do I need a larger alternator?

*VOTE NOW Help Metalcloak Giveaway an XJ Suspension*Stainless Steel Door Hinge PinsPoly Door Hinge Bushings

Reply
Unread 02-23-2009, 11:12 AM   #1
ABerry
Registered User
2004 WJ 
 
Join Date: Apr 2004
Location: Portland/Eugene, OR
Posts: 374
do I need a larger alternator?

I'm currently running a true 750-1000rms single JL 12" W7 subwoofer powered by a JL 1000/1 amp. I'm about to install a 4x100rms alpine pdx amplifier to power a set of infinity kappa components for the front and kappa 6.5" 2 ways for the rear... would it be strongly recommended to upgrade to a larger alternator? I have the 4.0 WJ, whats the output of the stock alternator?

__________________
IRO 3", BFG MT KM2 31's, MX-6's
University of Oregon ALUMNI GO DUCKS!
ABerry is offline   Reply With Quote
Unread 02-23-2009, 11:55 AM   #2
Jerry Bransford
Do it right or not at all
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 59,998
Your alternator is fine. That setup doesn't draw that much power for normal listening levels. Only if you had it cranked up enough to provide sound for a stadium or competition event would it draw even close to what it can draw when it's putting out all of its power. The peak amperage comes right out of the battery when needed. Your alternator is likely 117 amps.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.

Jerry Bransford is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.