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post #1 of 16 (permalink) Old 07-11-2008, 10:21 PM Thread Starter
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enough power?

how much power can a cobalt lt give to an amplifier? just one, possibly two in the future, along with subs

so it would be a 400 watt amp and a 1000 watt amp

theoretically would i need anything? whats this capacitor ive heard of and what does it do, how does it install etc. thanks

creedin added 12 Minutes and 31 Seconds later...

okay so i did the math according to crutch field


105 amp altenator x 40 /100 is 42
400 watt amp (4x100rms) x 2 / 13.8 = about 57 / 3 about 20

so id have 22 amps left to work with correct?

anyone know where to get a higher alternator and how easy it is to install?

Last edited by creedin; 07-11-2008 at 10:39 PM. Reason: Automerged Doublepost
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post #2 of 16 (permalink) Old 07-11-2008, 11:23 PM
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That should be fine. Lots of cars run that setup just fine. I was planning on doing something similar.

A capacitor just keeps the flow of power constant. Keeps the subs from taking took much power an dimming lights and such. You'll need it if you have a really powerful setup, like over 1200 watts (and thats a good company's wattage that doesn't overrate their stuff).
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post #3 of 16 (permalink) Old 07-12-2008, 07:30 AM
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I'm pushin 800w amp for over a year and i'm just fine, but i really need a capacitor.
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post #4 of 16 (permalink) Old 07-12-2008, 10:02 AM Thread Starter
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well i might go with a pair of subs later on, how much does 1 farad help out etc. and once again itd be 1000 w amp most likely
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post #5 of 16 (permalink) Old 07-12-2008, 12:20 PM
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The stock alternator is pushing 130 amps, you will be fine sticking with stock.

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post #6 of 16 (permalink) Old 07-12-2008, 12:39 PM Thread Starter
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o i thot it was 105 amps...?

okay so a 100 rms x 4 channels is 400 * 2 = 800 / 13.8 = ~57 / 3 is ~20
plus
1000 rms x 1 channel is 1000 * 2 = 2000 / 13.8 = ~145 / 3 is ~48

so a total of 68 would be needed... but i only have 52 available?

and all of the ratings are just what the amp needs, and the amp powers the speakers and subs so i don't need to account for the speakers or subs power right??
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post #7 of 16 (permalink) Old 07-13-2008, 07:02 AM
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In the setup I have, I'm pushing 2 12" Kicker CVRs with a 1000w Amp and a 1 farat Cap. The system sounds terrific, and there is no power dimming going on anywhere in the car. You'll be fine.

'05 Base Coupe, Blue, 2.2L, 5 speed manual, Too many mods to list in this signature. I'll just say insanely loud system, fully upgraded suspension (nothing original), Intake, Full Exhaust from the engine back, Rims, Tires, etc... Give me about a month to get back stateside and pics will be posted in the vBGarage.
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post #8 of 16 (permalink) Old 07-13-2008, 10:02 AM Thread Starter
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okay thats great, but im going to push a total of 1400 watts (4 channel 400 watt, 1 channel 1000 watt) idk if that will work
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post #9 of 16 (permalink) Old 07-13-2008, 05:32 PM
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i think a battery can pretty much put out a pretty insane amount of power. I know itsnot a cobalt but my buddys got a big van, idn what kind but hes got 42 speakers 4 subs and 4 amps in his car. two 1500 wat amps and two 750 wat amps and they all get power from a single battery, yes the lights dim like crazy when the subs hit, but thats it, everything still runs fine. And yes that wasnt a typo, 42 speakers, i know its crazy.

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post #10 of 16 (permalink) Old 07-13-2008, 06:18 PM
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so my 1500 watt clarion amp and 250watt alpine should be alright in my cobalt?
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