How To: Build a frame for 18-inch subwoofers

The great thing about owning a car is the ability to do whatever you want with it. This ranges from adding a certain type of brake pads to an awesome looking spoiler.

In this tutorial, you'll find out how to build a frame for two 18-inch subwoofers. This is a great way to add some meat to your sound system. So good luck, be careful, and enjoy!