What size Alt you think?

[Trixter 10+ year member]

i have a 2006 liberty with a stock 136a alt. my system is a cadence A7 that does 1200w x 1 @ 1ohm and a 4 channel that does 200 x 4 at 4ohm...these are all rms ratings. from what i have found the combined 2000w at 14.4 v will require an additional ~140a of power (~160a @ 12v). so is it true that i need to find a 276a alt minimum? that seems a bit high for a 2000w system. i guess a nother Q would be how much of the original 136a am i actually using? i am think a 240a will work...but i'm looking for any thoughts here....

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[TC2k15x2 10+ year member]

i have a 2006 liberty with a stock 136a alt. my system is a cadence A7 that does 1200w x 1 @ 1ohm and a 4 channel that does 200 x 4 at 4ohm...these are all rms ratings. from what i have found the combined 2000w at 14.4 v will require an additional ~140a of power (~160a @ 12v). so is it true that i need to find a 276a alt minimum? that seems a bit high for a 2000w system. i guess a nother Q would be how much of the original 136a am i actually using? i am think a 240a will work...but i'm looking for any thoughts here....

You dont need a new alt for that panzy setup....

GO BIG OR GO HOME!!!

 

[hoss 5,000+ posts]

7 inches.

 

[Trixter 10+ year member]

You dont need a new alt for that panzy setup....
GO BIG OR GO HOME!!!

lmao...i had a 180a with the same set up in my cavalier and it was barely enough....dual batteriers and big 3 done in 2g.

ftr: that A7 is benched at 2300w rms at 1 ohm.

 

[natisfynest 10+ year member]

7 inches.

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[hoss 5,000+ posts]

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I'm talking about the alt sweetie.

 

[natisfynest 10+ year member]

o yea i knew that

 

[loopkiller 10+ year member]

I would guess that with proper batteries and wiring, a 200a alt would be more than plenty for that setup.