Building a Car Audio System: Where to Start

A great system does not have to be built in one go. Here is the order that gives the biggest gains at each step.

Start with speakers

Factory speakers are usually the weak point. New component speakers, mounted well, bring a big jump in clarity even on factory power.

Add an amplifier

An amplifier gives speakers the clean power they need, which lets the music play loud without turning harsh. Proper wiring and a good ground matter as much as the amplifier itself.

Add a subwoofer

A subwoofer takes the low notes off your door speakers and gives the music weight. A well-built enclosure sounds tight rather than boomy.

Finish with the head unit and sound deadening

A new head unit adds CarPlay, Android Auto and better controls, and sound deadening in the doors makes everything sound tighter. Plan these so each step works with the next.