If you are adding an amp and sub to a factory premium sound system with its own stock subwoofer, you must get your signal for the line output converter from that subwoofer. Adding an amp and subwoofer to a stock radio can be the easiest way to improve your stereo system in your car, if you do it correctly.

Can you use factory radio with subwoofer?

Adding a subwoofer to your factory stereo is a great way to improve your sound without giving up your familiar factory controls.

Can you wire an amp to a stock radio?

Another popular way to connect an amplifier to a factory radio is to use something called a line output converter. It connects to the factory radios speaker wires and converts the speaker-level signal to a preamp-level signal. This lets you use RCA cables to run that signal to your amplifier.

How do I choose an amp for my subs?

When choosing an amplifier, the most important thing is to pick one with the right amount of power for your subs. Once youve decided how much power you need, youll need to decide which type of amp to use. For most bass systems, youll want to choose either a mono (single-channel) amp or a 2-channel amp.