Building a Fiberglass Subwoofer Enclosure Box

Fiberglass Enclosure Design

Although there are numerous commercially produced subwoofers available from a variety of manufacturers, those on a budget or serious audiophiles may choose to assemble their own components. Designing and building a custom enclosure can create a subwoofer that is perfectly matched to the system and room dimensions.

Since fiberglass is a very durable material when hardened, it is an excellent choice for speaker enclosures. It is also visually appealing when prepared and finished properly. While choosing the speaker and electronics may be uncomplicated, many find that the intimidating part of the process is learning how to build a fiberglass subwoofer enclosure.

When considering the type of cabinet to make, it is important to establish the correct dimensions. Since subwoofers push a specific amount of air, improper sizing will diminish performance. Subwoofer speaker manufacturers can provide the exact specifications for building a box with the necessary free space.

A fiberglass enclosure can be constructed for under $200 and includes the following materials:

* Resin and Hardener

* MDF Board

* Fleece

* Fiberglass Mat

* Body Filler

* Primer

* Acrylic Paint and Clear Coat

* Sandpaper

* Gloves, Brush and Trowel

Building a Form

The first step in building a fiberglass enclosure is creating a form that will serve as the substructure. This is most often made from

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