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Stock alt sufficient?


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zolron 
Member - Posts: 4
Member spacespace
Joined: September 24, 2004
Location: Canada
Posted: September 24, 2004 at 12:50 PM / IP Logged  

Hi, first time poster, relatively new lurker :)

Just have a quick question on whether my stock 80amp alternator will be enough for my new planned system

Car is a mazda protege ( power moonroof, windows, doors, air, ; )..planned system will be:

Kicker 600.1 amp ( powereing 2 alpine type R, or S , not sure yet :) ) 600 RMS @2 ohms

Kicker 650.4 amp (powering fronts) 90rms x 4 @14.4V @4 ohms

Bear in mind that 80% of the time the volume will be run at 60% or less ( if that matters in current draw ?)

From what i've read, it seems that this setup will draw 35-45 amps which should be close to the breathing room for my stock alt. However, does this figure represent the max draw or avg draw?

Sorry if it sounds confusing, just trying to figure out if will fry my alt.  If this is the case, can someone advise me as to what the max RMS my system can be without ugrading the alt?

Thx in advance.

Alpine Guy 
Platinum - Posts: 2,478
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: October 18, 2003
Location: Canada
Posted: September 24, 2004 at 2:17 PM / IP Logged  

You may be okay, your on the limit of ok/and needing to upgrade.  During the day you should be fine, but at night with lights on and heat going your going to nitice dimming lights.

The best way to find out tho is to try it first.  get a voltmeter installed upfront so you can see the voltage as you cruz.

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.
jeremyjerm 
Member - Posts: 46
Member spacespace
Joined: December 13, 2002
Location: United States
Posted: September 25, 2004 at 1:08 PM / IP Logged  
will it work              yes
is it all the power you need      heck no
add your fuses together (the ones on the amps) and you see how much power your amps could pull if they were workin to absolute capacity. that should be way more than the 80 that ur alts makin.     ALL CARS NEED
AFTERMARKET ALTS FOR A KICKASS SYSTEM!
boxmaker85 
Silver - Posts: 433
Silver spacespace
Joined: September 19, 2004
Location: United States
Posted: September 25, 2004 at 11:37 PM / IP Logged  
how big should someone upgrade their amp?  and bout how much do they cost?  what size should I get for about a 700ish watt RMS system?  or should i just get an additional battery?

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