3000 Watts... What size alternator?

[Duke 10+ year member]

I have 2 Hifonics TX1505Ds running at 1 ohm to produce a rated RMS of 1500 watts each. What size alternator should I get. I also have an extra Optima Red Top in the back, and plan on putting a Yellow Top under the hood. 1999 Dodge Durango SLT, the engine is a 5.9 liter V8. Thanks in advance.

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[90accordman 5,000+ posts]

200 amp youll be fine, I run a XX Colossus off a 200amp

 

[JoshHd6 10+ year member]

^^^^^

 

[Duke 10+ year member]

WOW, 2 replies in like a minute! Thanks guys. The thing is... I'm currently running a stock battery under the hood (plus the red top in back), and I get light dimming with ONE sub cranked up. So, I'm going to get a yellow top, and then see how that helps if it does, and do some wire upgrading also.

 

[90accordman 5,000+ posts]

im only running a yellow top and no big three and a single 12 as well

 

[Duke 10+ year member]

I think I need to shorten my power wire also, and my grounds. Do you think too much length on either of those could attribute to dimming?

 

[Duke 10+ year member]

Hey, if I'm going to be fine with 300 watts, then you should be fine with 2000. What amp you getting?

 

[90accordman 5,000+ posts]

if your at least 4gu i wouldnt think you'd have a problem, but i would do a big three and stuff if you buy the alt or not

 

[killahbean 10+ year member]

I think u should use the redtop under the hood and yellowtop in the back....the redtops are starting batteries

 

[Fast1one 10+ year member]

I think u should use the redtop under the hood and yellowtop in the back....the redtops are starting batteries

Beat me to it...+1

 

[Rawr-DQ 10+ year member]

There is an alternator group buy over on the realmofexcursion forums, sign up to thier forum, then goto the electrical/wiring section, look for the excessive amperage thread.

Nate is a good guy, and he'll give you a good deal on whatever alternator you need, just post your car specs and what you want, and he'll pm you a price before the price break.

Prices vary on different cars, but he should be able to build you an alt for your car, check it out, you wont be sorry.

 

[smd4life 5,000+ posts]

I think I need to shorten my power wire also, and my grounds. Do you think too much length on either of those could attribute to dimming?

its more about placement than length but yeah, the shorter the better

 

[Duke 10+ year member]

I've been all over that group buy for a while... just having doubts cause of the bad rep that EA has... I will also put the Red Top under the hood, and the Yellow Top in the back.

 

[Duke 10+ year member]

Nate is a good guy, and he'll give you a good deal on whatever alternator you need, just post your car specs and what you want, and he'll pm you a price before the price break.

What do you mean by "price break?"