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Old 10-23-2010, 02:47 PM   #1
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Do I need to upgrade my alternator?

I have a 01 v6 mustang, currently there is one 400rms amp, one 12" sub and a 3 farad cap. My current voltage when the car is running is bewteen 14.3 and 14.8. I recently have gotten a zx1500 watt rms kicker amp, two l5 solo barics, a blue top optima and 16' of 0 gauge wire.. By my calculations the 1500w amp will be pulling from 100a-150a, my alternator can put out between 95a-105a. This seems unsustainable and will cause problems correct? Do I need to upgrade my alternator before I install the new system? Here is my wiring diagram.


Here is my the wiring on my 400w amp 12" sub. I plan on putting the second battery by the cap, removing that 12" and sony amp, then running a 0guage power wire from the second battery to cap then to the 1500w amp that will be mounted on a box that sits on my back seat. I need feedback and advice.




Main battery



Second battery for trunk


This is how im mounting my amp, the fuse will be moved though.
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Old 10-23-2010, 09:34 PM   #2
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Re: Do I need to upgrade my alternator?

Your alternator should be fine because your amp will not draw that much amps continuously I have a kenwood 1000w/rms mono amp and it does fine with the stock size battery but you might want to upgrade your capicitor if you can "the bigger the better". Your stock alt should be 130 amp if you have air because mine is.
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Old 12-21-2010, 12:56 PM   #3
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What you need is a capacitor to store an energy charge so when the bass hits your lights don't dim. An extra battery wouldn't hurt as long as it was wired in parallel. It would store extra energy as well and vastly improve cold starting in winter
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Old 12-25-2010, 07:13 PM   #4
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Quote:
Originally Posted by Justus
I have a 01 v6 mustang, currently there is one 400rms amp, one 12" sub and a 3 farad cap. My current voltage when the car is running is bewteen 14.3 and 14.8. I recently have gotten a zx1500 watt rms kicker amp, two l5 solo barics, a blue top optima and 16' of 0 gauge wire.. By my calculations the 1500w amp will be pulling from 100a-150a, my alternator can put out between 95a-105a. This seems unsustainable and will cause problems correct? Do I need to upgrade my alternator before I install the new system? Here is my wiring diagram.

Here is my the wiring on my 400w amp 12" sub. I plan on putting the second battery by the cap, removing that 12" and sony amp, then running a 0guage power wire from the second battery to cap then to the 1500w amp that will be mounted on a box that sits on my back seat. I need feedback and advice.

Main battery

Second battery for trunk

This is how im mounting my amp, the fuse will be moved though.
As long as you haven't put on new pulleys you should be fine.
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