Alternator power

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mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: November 30, 2005 at 11:33 AM / IP Logged

Hi guys....I have a 500watts rms amplifier and want to hook another one of the same power...Does anyone know hoy much amps must be provided by the alternator???

mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: November 30, 2005 at 11:39 AM / IP Logged

Almost forgot !

my car is a sunfire aut 2001, air conditioner...head unit alpine mod 9845 (2 volts preout) ,preamplifier interfire , amp rockford fosgate mod 500x ,4 chan (250 x 2 @ 4 ohms) and a baby 12" kicker dual 4 ohm,400 watts rms that pounds really loud!

mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: November 30, 2005 at 11:42 AM / IP Logged

and wanna hook wheter a mono bazooka BL1500 (500 watts @2 ohms) or a 4 chan amp(50 per channel)

geepherder

Platinum - Posts: 3,668

This member consistently provides reliable information

Joined: October 27, 2003

Posted: November 30, 2005 at 4:48 PM / IP Logged

If you look in the literature that comes with your equipment, you should see fusing requirements, which will give you a rough estimate of how many amps each piece can draw.

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

mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: November 30, 2005 at 4:56 PM / IP Logged

Ofcourse I read the instructions, my amplifier requires a 50 amp fuse ,the amplifier that will buy requires 30 amp....that makes 80 amp.....So how many amps does the alternator need to feed to acomplish the amplifiers plus recharging the battery!

geepherder

Platinum - Posts: 3,668

Joined: October 27, 2003

Posted: November 30, 2005 at 5:10 PM / IP Logged

Okay, then, your factory alternator is rated at 105 amps. Since music is very dynamic, you'll probably never pull a full 80 amps even if you tried. I bet you'll be fine with no upgrade.

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

mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: November 30, 2005 at 5:23 PM / IP Logged

geepherder : thank you very much for enlighten me! i was very confused because ...as you stated in the previous post...105 is more than enough...then why the dome lights tilt a little bit? I don´t wanna get the alternator burned or damaged...

geepherder

Platinum - Posts: 3,668

Joined: October 27, 2003

Posted: November 30, 2005 at 5:32 PM / IP Logged

At any rate, you said your lights dim a little? If so, I'd get your alternator tested. I'm not sure about in Mexico, but in the states it's free at the parts store. Also, if you have a multimeter, you can turn on as many accessories as you can (a/c, rear defrost, high beams) and crank the stereo with the car running. Measure the voltage at the battery- it should stay at or above 13.5 volts. If it does not, do a search on here about the big 3, and consider upgrading the alternator.

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

ragoal12

Copper - Posts: 135

Joined: July 23, 2005

Location: United States

Posted: December 01, 2005 at 7:02 PM / IP Logged

for 500watts.. with an upgrade of the BIG 3 u should be ok.. if not get a good battery under the hood and that should help.. if problems still persist then look into upgrading to an ho alternator.. i've heard that you should have 10 amps for every 100 watts... but most people buy as big as there pocket book will allow them

S.O.B custsoms.. South Omaha, Nebraska

mariocesar

Member - Posts: 48

Joined: October 18, 2005

Location: Mexico

Posted: December 02, 2005 at 8:56 AM / IP Logged

Thanks guys!

I decided to sell my car and buy a big foot! jeje just kiddind...yeah I´get the alt tested, in fact I think it needs maint...once this is done will do the B3

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Alternator power

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