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How to Add an Amplifier to a Factory Stereo | It Still Works
A sub woofer or two in a vehicle can make the world of difference in listening to music. It is very important to match the RMS of your subs to your amp. You want an amp more powerful than your sub, because you don't want your sub to clip. Clipping is the number one reason of bass distortion. To create this article, 35 people, some anonymous, worked to edit and improve it over time.
How to hook up an amp and sub to a stock stereo.
If you want to upgrade your sound system in your car by adding a sub woofer or speakers powered by an auxiliary amplifier without having to get a new head unit then hopefully this should help you: I decided to keep my standard head unit because it looks well in the car, is less likely to attract thieves than a shiny after-market unit and it is a factory upgraded unit anyway and i find it gives pretty good audio quality, it works with the steering wheel controls and has bluetooth and aux-in, so an after-market unit wouldn't offer a substantial upgrade. Factory head units rarely have RCA or "Low line" outputs which your amplifier will need for it's input signal.
Wiring up an amplifier to a stock radio is something that many of our customers do themselves. With the proper parts and correct wiring, this can be an easy way to improve your factory stereo system. Line output convertor LP has adjustable input signals and signal sensing remote turn on. This is what is going to feed signal into your amplifier.