Building a vented dual subwoofer enclosure is an excellent way to add bass to your car audio system. The combination of two subwoofers with the additional dB output provided by the venting system ensures that the bass output of the enclosure will be loud, strong and deep. If you have some basic carpentry skills, you can create your own dual vented subwoofer enclosure.
Instructions
1. Decide on the size of your box. Measure the area where you'll put the box and then check the specs for your subwoofers. They'll have a figure in the specifications for Vented Enclosure Size. This number will be in cubic feet. Sketch out a design for your box, and then determine the volume by multiplying the height, depth and width of your box in inches and dividing the number by 1728. The resulting number is the cubic-foot volume of the enclosure. When this is within 10 to 15 percent of the recommended specification for the subwoofers, you'll have a suitable box design and volume.
2. Use your circular saw to cut out the front, back, top and bottom panels of the box from 3/4-inch MDF. Then cut openings for the two subwoofers in the front panel using your drill and jigsaw. Assemble the parts together, securing the panels with carpenter's glue and wood screws.
3. Cut end panels, and then cut an opening in each end panel for your terminal cup. Secure a piece of speaker wire to the tabs on the back of each terminal cup and mount the terminal cups into the end panels. Secure the end panels onto the box with carpenter's glue and wood screws.
4. Connect the ends of the wires attached to the terminal cups to the speaker terminals of the subwoofers. Mount the subwoofers into the openings at the front of the box, screwing them into place with wood screws.
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