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,

Subwoofer ports (a.k.a vents) are interesting things.  In a previous post I provided some background into how ports worked , in this post I am going to dig a little deeper into port design, a.k.a. port tuning. Flared Ports with Wooden Connector Rings The Port Formula There is a formula that you can use to design a port, since formulas tend to scare people away and there plenty of tools available to do the calculations for you this blog post will focus on understanding the four main parameters that you need to think about when designing a port.  Tuning Frequency Enclosure Volume Port Cross Section Port Length We can manipulate any three of these four items and the formula dictates the forth parameter.  For this post we are going to examine how the tuning frequency, enclosure volume, and port cross section influence the length of the port.  It is very important to understand the impact of these four parameters as they will determine the size, shape and sound of our subwoofer.  We need to

If you want to build a subwoofer, here is what you need to know before you start cutting wood. You have the bug!  A friend with a great subwoofer (home or car) has shown you their setup.  You have been browsing various online retailers and you think you can build it better, or cheaper.  Perhaps you have been into audio for years and you are ready to up your game and DIY.  This is a multipart guide on how to get started!  Here is what you need to do before you start ordering parts and cutting wood. 1.  BEGIN WITH THE END IN MIND This is an old quote from Steven Covey.  Focus on the result that you want, define the purpose of this project, and clearly understand why you are doing it yourself.  Here are some things to think about. Is this for music or home theater ?  For home theater you need to reproduce bass frequencies that are below the normal human hearing range (20 HZ).  For most types of music you don't need to play as low. Is this for null or home?  Car's have less space