DIY Floorstanding Speakers

Written by sam jones
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DIY Floorstanding Speakers
It's possible to make your own floor standing speakers (speakers image by Sergey Galushko from

Floor-standing speakers are a welcome addition to a stereo system, because they provide a wall of sound that helps carry the listener away. Unfortunately, floor-standing speakers tend to be expensive. If you are somewhat handy around woodworking and electronics, consider making your own; doing so will save you money, and you'll be able to customise your speakers to fit your own unique needs.

Skill level:

Things you need

  • 2 32 inch by 8 inch by 1 inch boards (sides)
  • 1 32 inch by 7 inch by 1 inch board (back)
  • 1 30 inch by 5 inch by 1 inch board (inside slant board)
  • 1 8 inch by 7 inch by 1 inch board (top)
  • 1 6 inch by 5 inch by 1 inch board (bottom)
  • 4 2 inch by 1 inch by 1 inch board (braces)
  • 1 bottle of wood glue
  • 1 box of ½ inch wood screws
  • 2 1 by 1 by 1 inch wood blocks
  • 1 yard by ½ yard stretch cloth
  • 2 2 inch tweeters
  • 2 sheets of paper
  • Circular saw
  • Drill with ¼ inch bit
  • ¼ inch polyester foam

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  1. 1

    Screw the sides and back together. To start the cabinet, connect one side to the back board by applying wood glue all along the edge where they are to connect, then finish by screwing in three wood screws evenly spaced between the top and bottom of the cabinet.

  2. 2

    Attach the other side and the top. Glue and then screw the other side of the cabinet in place, then do the same for the top. When attaching the top, use two screws evenly spaced on each side.

  3. 3

    Attach the inside slant board. The inside slant board is used to cancel any echo that might be created by sound moving backward in the cabinet and bouncing off the back. It slants from the back of the cabinet to the front at a very slight angle. To get it to slant, either purchase a bevelled board or use a sander to bevel both ends of the board yourself. Try to create a 5 degree angle, though it doesn't have to be exact. Glue the top part of the slant board 1 inch in from the back of the cabinet at the top, parallel to the front. Then glue in blocks where it abuts the top to help keep it in place. The other end of the slant board will rest on the bottom after it's installed.

  1. 1

    Cut two holes in the front board for the tweeters. Lay a piece of paper on the front of one of the tweeters and shine a light on it so you can see the outline of the membrane (the speaker part of the speaker). Draw a circle to approximate the membrane. Repeat for the other tweeter.

    The two tweeters can go anywhere you choose in the cabinet so long as they are near the top. In this example, cut a hole for the first tweeter two inches down from the top of the front board and centred left to right. Then cut another hole below it for the other tweeter, two inches below the outer edge of the first one.

  2. 2

    Screw the tweeter into the front board over the circular hole. Repeat for the other tweeter.

  3. 3

    Attach the crossover. The crossover is an electronic device that splits the frequency coming in over the speaker into different ranges, and then sends the appropriate range to the appropriate tweeter.

    Some tweeter/crossovers come as a single unit that can be easily screwed together. Others come as separate units where the crossover is screwed to the inside of the cabinet. If the crossover is the single-unit kind, place it over the back of the tweeter and screw it onto place. If it's separate, screw it onto the inside slant board.

  4. 4

    Attach the bottom, braces and foam. The bottom piece fits up inside the cabinet from below. It can be held in by pressure if the fit is tight enough, or glued or screwed in place if desired. Push it up inside the cabinet until it is pressing against the slant board. Make sure it's level with the top of the cabinet. The braces fit between each of the sides at the bottom of the cabinet to provide stability. Hold them in place and screw them in with two evenly spaced screws. Finish by gluing the foam into place on the inside slant board between it and the tweeters.

Tips and warnings

  • When making the cabinet, it's easier to keep the shape square if you use wood clamps to hold all the parts together as they are assembled.
  • Normally floor speakers with tweeters are added in pairs. To make a pair, follow the above instructions to create an exact duplicate.
  • The cabinets can be customised by adding stretch material over the front, or staining or painting the wood to suit your style.
  • The electronics in speakers can hold a charge for a moment after the power to them is turned off, so never work on the insides of speakers until after the power has been disconnected for several minutes.

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