J.R. and Eric return for Part 2 of our series on how to build the perfect car audio system for your needs.

Once again, your hosts explain the jargon and answer essential questions like, "What is RMS wattage?" and "Do I need to think about 'sensitivity'?" Find out more about speaker sizes, the importance of speaker materials, and all the good reasons to upgrade the factory speakers in your older vehicle.

Ready to find out which speakers fit your vehicle? Start with our ⁠⁠⁠vehicle selector tool⁠⁠⁠.

And for a recap of everything in this episode, check out our ⁠⁠⁠car speakers buying guide⁠⁠⁠.