13+ Effective Ways On How To Build A Subwoofer Box

Most of people have a dream of building their own subwoofer box. It certainly beats buying one from the market. After all, you know, building a subwoofer box is an outcome of your creativity and imagination. It shows that you are quite capable of creating something unique and personal for yourself or someone else.

  • How could it get any better than this?

1. Things You Need in Building a Subwoofer Box

How To Build A Subwoofer Box by speakerjournal.com

Firstly, you will need the right supplies.

  • Here are some:

1. Plywood

the most commonly used material for building a subwoofer box. This material is not only sturdy, but it is also easy to work on.


you will need this in order to attach your plywood together.


you will use these for attaching the plywood’s corner pieces.

4.Wood finish

once you are done with your project, you should have this item handy so that you can add a touch of shine and make your box appear polished and professional.


your project will not be perfect if you do not sand it down afterwards. You can start on a rough grit and eventually switch to a finer one as you progress until you are satisfied with the smoothness of your work.

6.Carpenter's square

this tool will help you cut your wood pieces into straight lines. It is essential to have this tool because, without it, you are likely to make a wrong cut that can alter the size and shape of your box.


for nailing purposes.

8.Protective gloves

in case of glue gets on your hands, you better be ready with these gloves to protect your hands from any unfavourable reactions.


 for drawing on the wood pieces. You can also use a carpenter’s pencil for this purpose which is easy and smooth to make lines with.

10.Tape measure

you will need this to correctly calculate the length of each piece of wood required for your subwoofer box.


you can use this to sand down the hard edges and corners of your woodworking projects. It is better than using a sandpaper on these specific areas since it will allow them to retain their shape, especially where curves or edges are involved.

12.Stain or paint

 you should coat your project with this to guard it against stains, watermarks and scratches

13.Power tools

 you will probably need these if you build a vast the if subwoofer box and there is not enough room for essential woodworking tools like drills and saws.

2. The Size of the Box

How To Build A Subwoofer Box by speakerjournal.com

The size of your subwoofer box dramatically affects how well it performs. For instance, if your subwoofer box is too small for the woofer that you have chosen, it is doubtful that you will get the desired bass effect. On the other hand, if you build a subwoofer box that is way too big for your woofer, there will be a lot of space left unused which can compromise the audio performance.

  • To make matters easier for you, here are some guidelines on how to determine the correct size of your box:

1.Measure your woofer

 you should have this information handy in case you forgot to get it when you were buying the speaker, or it is still packed. If you do not know where to find this info, make sure to check if there is a manufacturer’s label on the box where it is stored.

2. Calculate the volume of your box

make use of your tape measure and calculator to arrive at the exact square footage of your subwoofer box before you start working on it. For instance, if you are using a 12″ woofer, multiply this number by pi since what you will need for figuring out the box’s volume is the radius of your woofer. Calculate the total cubic inches of this product and divide it by 1728 for better results. For instance, if you get a total of 14 cubic feet from your calculations, it means that the ideal size for your subwoofer box should be 2 cubic feet or 264 cubic inches.


3. Measure the inside dimensions of your box

make use of your carpenter’s square and measure from corner to corner or wall to wall if you are working on a rectangular design.

4. Correctly, the Subwoofer Box to Increase Bass Response

Next, it is time to build a subwoofer box.

  • There are some essential steps you will need to follow:

1.Cut the wood pieces according to the measurements provided in the plans, You can use our template before cutting them out by hand. Make sure they are right when you finish up this step of building a subwoofer box. If everything is in order, you can move on to the next step.

2.Nail down the pieces together to form your subwoofer box. it is best that you only nail them at two opposing corners so that you won’t be doing a lot of hammering when putting them together.

Make sure they are correctly fitted. If there are voids between the corners of your subwoofer box, fill them up with extra pieces that you can cut with precision from the rest of your wood. 

3.Drill holes for the woofer make sure to drill plenty of spots equal to the number of screws and bolts that secure it to maintain a stronger bond between these two parts.

5. Finish your Subwoofer Box with the Right Stencils

Now that you have finished building a subwoofer box, it is time to seal and finish its insides with your favourite fabric or paint. If you prefer a design on any part of this project, you are free to use woodcarving tools to make one as long as it is not on the inside walls or ceiling.

The best way to finish your subwoofer box is by applying coat after coat of paint over its walls and parts. You can choose from various colours to complement your woofer’s theme. For example, if you chose black, go with black paint to give it a rich and classy look.

  • – If you plan to apply stencils, this is the best time to do so as long as you took out those decorative tools from your toolbox. Lastly, attach caster wheels using the hardware that came with them. You can choose to install them on all four corners or just one, depending on your preference.
  • – Cut out holes for the crossover, ports and input/output jacks. Make sure to drill plenty of them so that they can line up with the respective parts. If you created your subwoofer box properly, this is the part where your DIY project will come to life!

If you want to repair your subwoofer. Here is a complete guide on How To Repair A Subwoofer?

Still don’t get it and have questions? Feel free to ask in comment section.