How To Make a 3”Speaker Sound Box Project by Paperboard

Subwoofers are essential components of any sound system, enhancing the low-frequency audio range to provide a fuller and more immersive listening experience. While you can purchase subwoofer speakers from electronics stores, building your own can be a rewarding DIY project. In this article, we will guide you through the process of making a 3-inch subwoofer speaker sound box using paperboard.

Materials Needed

Before you begin, gather the following materials:

  • Paperboard sheets
  • Cutting tool (e.g., utility knife or scissors)
  • Glue or adhesive
  • Speaker (3-inch subwoofer)
  • Speaker wire
  • Paint or decorative materials (optional)

Preparing the Paperboard

Start by cutting the paperboard sheets to the required size for the speaker enclosure. You will need pieces for the front, back, sides, and top/bottom of the box. Ensure the pieces are cut precisely to ensure a snug fit when assembled.

Next, fold and assemble the paperboard pieces according to the design of your speaker box. Use glue or adhesive to secure the folds and joints, ensuring a sturdy construction.

Building the Speaker Enclosure

Once the paperboard pieces are prepared, glue them together to form the speaker enclosure. Pay attention to the corners, reinforcing them with additional paperboard strips for added durability.

Installing the Speaker

With the speaker enclosure assembled, create a mounting hole for the speaker on one of the panels. Carefully secure the speaker in place using screws or adhesive, ensuring it is positioned correctly for optimal sound projection.

Make a 3”Speaker Sound Box Project by Paperboard

Wiring the Speaker

Connect the speaker wires to the terminals on the back of the subwoofer. Ensure the connections are secure and insulated to prevent any short circuits.

Testing the Speaker

Before closing the speaker box, connect the subwoofer to a sound source and test it. Adjust the volume and settings to achieve the desired sound quality.

Finishing Touches

Once the speaker is tested and working correctly, you can paint or decorate the speaker box to your liking. Add any finishing touches to enhance its appearance and blend it with your home or office decor.


Building a 3-inch subwoofer speaker sound box using paperboard is a fun and rewarding DIY project. By following the steps outlined in this article, you can create a custom speaker that meets your audio needs and adds a personal touch to your sound system.

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