DIY: Speaker Cabinet for a Guitar Amp

Written by christian mullen
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DIY: Speaker Cabinet for a Guitar Amp
DIY guitar cabinbets can help you find your tone. (Guitar player #1 image by Warren Millar from

Making your own guitar speaker enclosure can not only save you money, but it also can allow you to customise your sound by using different types of speaker cabinets. You can use four of the same speakers in a cabinet or mix it up and place two models in the same guitar cabinet. That way you can place microphones on two different speakers and get two different sounds for recording or live sound, which can add depth to your tone.

Skill level:

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Things you need

  • Plywood
  • Saw
  • Drill
  • Drill bit
  • Jigsaw
  • Nails
  • Wood glue
  • Speakers
  • Speaker jack
  • Speaker wire

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  1. 1

    Cut the back and front for the speaker cabinet. The most common configuration for a guitar cabinet is 4-by-12, which contains four 12-inch speakers. Cut two pieces of plywood to 26 inches by 26 inches.

  2. 2

    Cut the top, bottom and side pieces for your speaker cabinet. Cut four pieces of plywood to 16 inches by 14 inches. This will allow you to have a 4-by-12 cabinet with a 16-inch depth. This will give you good bass response and will be easily transported.

  3. 3

    Build the frame of the speaker cabinet by joining the four pieces cut in Step 2 to form an open box. Make sure that each corner is at a 90 degree angle. This will assure that the front and back pieces are attached with no gaps. Glue and nail each corner for strength.

  4. 4

    Rout the back piece of wood to accommodate the speaker jack. Trace the shape of the jack on the wood, toward the top in the centre. Drill a large hole to accommodate the jigsaw within your tracing. Stay about 1/2 inch inside the tracing, or the rout will be too large and the speaker jack will be useless. Screw the jack in with the included wood screws when you are finished.

  5. 5

    Attach the completed back piece to the open box frame in Step 3. Glue all around the frame and place the back on the frame. When the glue dries, nail around the outer edge for strength. You can use epoxy on any gaps that you see, as you do not want air to escape on a sealed cabinet.

  6. 6

    Rout the four speaker holes on the front piece of wood. Place the four speakers as even as possible on the wood, facing the cones down. Trace around all four of the speakers. Drill a large hole within each circle to accommodate the jigsaw. Use the jigsaw to cut out each circle, staying about 1/2 inch away from the line you drew. This will allow you to screw in each speaker using the 1/2-inch flange on the outside of each speaker.

  7. 7

    Screw all four speakers into place with the included wood screws. Attach the wires to each speaker from the backside and place the front piece, with speakers, on the almost-completed cabinet frame. Glue around the open edge of the box and carefully place the front piece. Nail along the edge when the glue has dried.

  8. 8

    Unscrew the speaker jack and connect the wires from the speakers to the jack. Plug in an amplifier and a guitar to see if your cabinet is working properly.

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