THE DIY SUBWOOFER NETWORK

In this post I am going to share with you plans for a home theater subwoofer with some interesting design elements.             Parts Used* Dayton Audio Classic Series 4 Ohm 12" Subwoofer Young 300 W Plate Amplifier B52 3" x 5 " port flares Birch Veneered Plywood Wood Glue Birch Edge Banding Clear Poly Textured Coating Pocket hole screws Cap Head Hex Wood Screws Brad Nails 5 minute epoxy Polly-Fill Quilt Batting Sound Deadener   2 Design Goals    The hardest part of building a speaker is making it look good, especially if it is a budget build.  Wood veneer is a simple solution that that looks great, but it can really run up the cost of a project.  It is no more expensive to use cabinet grade as compared to veneering MDF.  The problem with plywood is the exposed layers on the edges. Some people like the look, I don't.  So, this design is going to make use of overhangs to cover as many edges as possible, and edge banding to cover the rest. As far as the sound goes,

What exactly is a Bandpass Subwoofer?  Let’s take a look and see!   Along the way we will dispel some popular myths about bandpass subwoofers.   Forth Order Bandpass Subwoofer Enclosure The image above shows a speaker enclosure with the subwoofer mounted on an internal baffle that divides the box into two separate airspaces.   One of those chambers is sealed, one is ported.   At first glance this seems like an odd configuration.   How does it make any sound if the speaker is inside of the box?   The answer is simple once you understand that a port is just a speaker made out of air.   As the air in the ported side of the enclosure is compressed and decompressed it causes the air in the port to move back and forth and the port produces the sound.   A common myth is that the subwoofer driver makes the sound and the port “let’s the sound out”.   That is not accurate, what you are actually hearing is the sound waves produced by the port itself. DIY 4th Order It turns out that there