How to Build a Sub Box for a Ten-Inch Sub

Written by jay kurz
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How to Build a Sub Box for a Ten-Inch Sub
Car Subwoofer (speaker image by CraterValley Photo from

Ten-inch subwoofers are commonly used for car stereo systems. The size of the speaker will determine the dimensions a box for the subwoofer will need to be. All subwoofer manufacturers give the recommended size for the boxes to get the best performance out of the speaker. Building your own speaker box using dense fibre wood and glue will save a considerable amount of money compared with buying one from a store.

Skill level:

Things you need

  • 3/4-inch MDF board
  • 4-foot level
  • Tape measure
  • Carpenter's square
  • Pencil
  • Table saw
  • Compass
  • Terminal cup
  • Electric drill
  • 1/2-inch drill bit
  • Jigsaw
  • Construction adhesive
  • 2-inch drywall screws
  • Subwoofer mounting screws

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  1. 1

    Mark out all sides of the box on MDF (medium-density fiberboard) using a 4-foot level, carpenter's square and pencil. A 10-inch rectangular subwoofer box has a recommended outside dimension of 14 inches wide by 13 inches high by 12 inches deep. Take into account the 3/4-inch thickness of the wood when marking the box.

  2. 2

    Cut out all sides of the box using a table saw.

  3. 3

    Mark the hole for the subwoofer on the front panel of the box using a compass. Take measurements of your speaker to make sure the hole is correct. On the back panel, opposite the panel the speaker will be mounted to, mark a square that is the size of the terminal cup. The terminal cup is what the speaker wires will be connected to.

  4. 4

    Drill a hole in the centre of the front panel and in the centre of the terminal cup square using an electric drill with a 1/2-inch bit. This is for starting points for a jigsaw. Cut the square and circle out of the panels using a jigsaw.

  5. 5

    Begin assembling the box starting with the bottom panel flat on the ground or table. Glue the two side panels in place with construction adhesive and secure them with slide clamps. Glue the front and back panels in place next and clamp them as well. At this point you will want to check the squareness of the box using the carpenter's square.

  6. 6

    Screw the terminal cup into place using the mounting screws that came with it.

  7. 7

    Glue the top panel in place and screw the box together using 2-inch drywall screws. Let the glue dry for the recommended amount of time.

  8. 8

    Plug the wires from the subwoofer into the terminal cup and screw the speaker into place using the mounting screws.

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