How To Make A Subwoofer

Do you want to know how to make a subwoofer? A subwoofer is a box that contains a groove speaker, that depending on its design and construction can enhance the sound.

What you need to make a subwoofer is:

• Plywood, 1/2" thick
• Glue
• Wood screws, 1 1/2"
• Speaker carpet
• Cutter blades
• Measuring tape/ruler
• Hand saw
• A speaker

The steps to make a subwoofer are:

1. Search the speaker's specs for the required box volume. This information comes with every speaker and is expressed in cubic inches or cubic meters.
2. Design the box's shape. To do this, consider the available space, or simply draw a cubic box.
3. Calculate the dimensions of your box. This is probably the most complicated step. To do it right, remember that volume is equal to height times width times depth. But, consider that this information will give you the interior dimensions, so you should add the right figures for the thickness of the walls. In the case you are using 1/2" plywood, you will have to add one inch to the height, one inch to the depth and one to the width.
4. Draw the required plywood pieces on the plywood board. Optimizing the use of plywood will save you some cash.
5. Cut the circular hole for the speaker in the front of the box.
6. Assemble the box, leaving the back open.
7. Glue the speaker carpet all around the box. To do this, use contact glue and new blades to cut the carpet. Avoid wrinkles by carefully sticking the carpet from the inside out.
8. Mount the speaker using screws. Fasten the screws just enough. Too much strength will bend the speaker's walls.
9. Weld the cables to both speaker's positive and negative bolts. Leave enough cable length to make it possible to connect from the outside. The use of switches is recommended, but not necessary.
10. Close the box. The air tightness is important for the box to deliver a true sound, because the real subwoofer sound depends on the air pressure relation between the inside and the outside of the subwoofer box, modified by the movement of the speaker's core.

Even though there are several subwoofer box designs, a cubic air tight box is the simplest yet most effective way to deliver a nice groove and true sound for just a few bucks and a couple of hours of handwork.