How to Make a Homemade Subwoofer
Making your own homemade subwoofer for your car is a fun way to add bass power to your audio system. And if you like working on do-it-yourself projects, you'll have the added benefit of making something that you can really show off to your friends. Making a homemade subwoofer is easy to do. If you follow a few simple principles of design and construction, you'll have a homemade subwoofer that'll really lay down the lows.
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Things You'll Need
- Subwoofer speaker 3/4 inch MDF (medium density fiberboard) Terminal cup Speaker wire Circular saw Drill Jig saw Wood glue Wood screws
Instructions
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Purchase a subwoofer speaker, or component subwoofer, if you don't have one already. There are many online vendors, but Crutchfield.com carries an excellent selection, with lots of good information for the subwoofer shopper to compare (see Resources below).
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When you have your subwoofer selected, sketch out a design for the enclosure you'll mount it into. When you consult your manual or tech sheet, you'll note that it will have a range of volumes (size) for the enclosure it should be mounted in. You can use an online box designer to determine your box's dimensions (see Resources below), or you can sketch out some designs and do your own calculations for box volume. To do this, simply multiply together the dimensions of your design's length, width, and height in inches, then divide by 1728. The result is the volume of the enclosure in cubic feet. Tweak your design until you have a box that meets your subwoofer's specs and the room available in your car.
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Cut out front, back, top, and bottom panels for your enclosure, using 3/4 inch MDF and your circular saw. Cut an opening for the subwoofer in the front panel using your drill and jig saw, then check the subs fit. Assemble the panels, using wood glue and wood screws.
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Cut out the side panels for your sub enclosure. These should be large enough to completely cover the end of the box. In one panel, cut out an opening for the terminal cup. Put the end panels on the box with wood glue and wood screws.
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Attach a piece of speaker wire (12 to 18 inches long) onto the rear terminals of the terminal cup and mount it into the opening you made with wood screws. Attach the other end of the speaker wire to the terminals of your subwoofer speaker, and then mount the subwoofer into the enclosure with wood screws.
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