Is it possible to hook up a 3,000 Watt aftermarket sound system to a stock 1990 Chevy...

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box_eatjj

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...audio system? Can i hook up an audio system to a stock audio system? If so, how do you do it? What will i have to buy? I'm willing to pay whatever. The car i want to do this on is a stock 454 1990 Chevy SS. Will i have to go "Big 3" and what will i have to buy to make this possible? Would i have to buy an extra battery, a new alternator, and a capacitor or just one of these?
 
You will need a LOC (Line-Out Converter) to convert the high-level speaker signal to low-level RCA signal to the amp(s).

If your total system power is 1200 watts RMS or more, you will need to:

1. Upgrade the alternator to a high output alternator
2. Upgrade to a yellow top battery
3. Install the "Big 3" with at least 2 AWG wire.

Failure to do this will result in the early death of the alternator as it will eventually fail.

Here is a guide that will calculate what size alternator and power wires you need http://www.box.net/shared/uchv4dbk88

You will need Microsoft Excel. If you don't have Excel, use this link http://www.box.net/shared/nkkw1dhk4g

A second battery is never a good idea as it's an added strain on the alternator to charge two batteries AND supply power for the car. The ONLY time a second battery is useful is if the audio system is to be used with the car off.

A capacitor is only good so far as the audio system isn't trying to pull too much from the electrical system. A cap doesn't provide more power, it's designed to 'stiffen' the voltage to the amp, nothing else. If the current isn't there, a cap won't help.

The alternator must have at least 20% more amperage power than the entire vehicle and sound system combined for a cap to be of benefit which is ironically the same requirements for an amp to be efficient.

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