How to Build a Subwoofer Box

Building a subwoofer box is the foundation of your new car audio system . In this video I will show you different techniques that will make your sub enclosure perfect and help it sound even better! Video 2 - How to Customize Your Sub Box: Need a box design? Go here: For Extended Cut (15 Minute Videos) Sign Up Here: Underseat Fiberglass Sub Box Series: Fiberglass D