
Yes, you can absolutely use the Polk Audio DB571 5x7 inch coaxial speakers with your car's existing factory stereo system, and you don't necessarily need an amplifier. These speakers are engineered to be efficient and perform well with the power provided by a standard car head unit. You can simply connect the Polk Audio DB571 speakers to your car's wiring and enjoy improved sound quality and volume. While these speakers can handle more power, they are designed to deliver great audio even without an external amplifier.


