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Alternator amp output


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jpilson21 
Member - Posts: 6
Member spacespace
Joined: August 21, 2003
Location: United States
Posted: August 22, 2003 at 2:54 PM / IP Logged  
Has anyone run into this problem - not having enough alternator power for a custom stereo system install?
I want to install a system that has (2) amplifiers. The max RMS of these total 1000 watts, which means I would need about 75 to 80 amps from the alternator to power them safely. Since the audio system should not draw more than 1/3 of the total alternator output, this means an additional 150 to 160 amps is needed for all other electrical needs. So it appears I need an alternator that produces around 230 amps of power. But my factory Dodge Ram alternator only puts out a total of 117 amps. Assuming my info and math are correct, does anyone have suggestions on this problem?
l7sdime 
Copper - Posts: 55
Copper spacespace
Joined: July 26, 2003
Location: United States
Posted: August 22, 2003 at 8:47 PM / IP Logged  

im not sure about 230 amps because i know a guy who is runnin a kx1200.1 which in my opinion is a good and powerful amp and he is runnin a 160 amp alternator with a farad 1.0 capacitor. i dont know if that will help but that wil give you a idea of how much you have to put out.

    Wes

speedwayaudio1 
Silver - Posts: 879
Silver spacespace
Joined: March 18, 2003
Location: United States
Posted: August 22, 2003 at 9:20 PM / IP Logged  
go ahead and get a 250 amp alt. you got a truck and you need the power for your system, and other stuff like wenches and cb radio, kc lights, neon, navagation, etc...... it will cost some bucks ,but you will be glade you did. Trust me it's worth it.
Big Dave
c.c. 
Member - Posts: 48
Member spacespace
Joined: August 02, 2003
Location: United States
Posted: August 23, 2003 at 9:29 AM / IP Logged  
check out ohio-generator.  they make alternators for a lot of applications.
toyota echo...perfect sound named vehicle
bberman1 
Gold - Posts: 2,314
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Joined: March 11, 2002
Location: United States
Posted: August 23, 2003 at 10:47 AM / IP Logged  
You should get a 200 amp alt. 120 amps  for the truck and 80 for the system
l7sdime 
Copper - Posts: 55
Copper spacespace
Joined: July 26, 2003
Location: United States
Posted: August 23, 2003 at 11:34 AM / IP Logged  

Im not tryin to steal your forum jpilson21 but id like to ask quick question about my alternator. I am gonna be runnin two kx1200.1's how muc hshould i rewind my alt. for?? over 230?? Thanks.

       Wes

bberman1 
Gold - Posts: 2,314
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Joined: March 11, 2002
Location: United States
Posted: August 23, 2003 at 12:14 PM / IP Logged  

l7sdime it depends on your car but your two kx1200.1's alone will use about 200 amps at max draw.

eurotek 
Copper - Posts: 58
Copper spacespace
Joined: July 31, 2003
Location: United States
Posted: August 23, 2003 at 7:33 PM / IP Logged  

if you rstock alternator is 117 amps, and you need an additional 80 amps,, why do you say you need an additional 150-160 amps to power electrical stuff?

next, there is no such rating as max rms... rms is rms there is no minimum or max..

with your math you would need an alternator of approx 200 amps


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