If you like big bass, it's hard to argue with the proposition that two subs are better than one. Once you've decided to add two subs to your car, you may decide to build your own box. There are some good reasons why: You can decide to build a box that fits your car's dimensions, or you may just like a hands-on approach to system building. Whatever the reason, building your own dual sub box doesn't have to be hard. With a little planning and some basic carpentry, you'll soon have a box you can be proud of.
Instructions
1. Decide on the size and dimensions of your dual sub box. Your subwoofers need a certain amount of air volume in the box to work properly. This information can be found in your subwoofer's manual, or on the manufacturer's website, where the volume will be expressed in cubic feet. Sketch out some designs for your box, then multiply the length, width and height by each other, in inches. Divide that figure by 1,728, and you'll have the volume of your planned box in cubic feet. Adjust the dimensions of your design until it matches the specs of the subwoofers.
2. Once you have your design, cut out the front, rear, top and bottom of your box from 3/4-inch MDF (medium density fiberboard). Use a circular or table saw so you get clean, straight cuts. Cut openings in the front panel for your subs, using a jigsaw, and test to be sure the subs fit properly. Now put these pieces together, using wood glue and wood screws.
3. Cut end pieces for the box. These should be large enough to completely cover the ends. In each end piece, cut an opening for a terminal cup. Attach the end pieces to the box with wood glue and wood screws. When the glue is dry, seal all of the seams with silicone sealant so the box is air-tight.
4. Cover the box with box carpet, securing the carpet with a hot glue gun. This is optional, but your box will look much more professional if you take this simple step.
5. Wire a separate piece of speaker wire to each of the inside terminals of the terminal cups. Now mount the terminal cups into their holes with wood screws. Attach the other end of each piece of speaker wire to the terminals of the subwoofers. Mount the subwoofers into their mounting holes using wood screws.
Tags: wood screws, cubic feet, decide build, dimensions your, each piece, glue wood, glue wood screws