When tuning a ported enclosure, you must make sure that you have the proper volume of airspace, the correct port area, and port length. Do you think that would work? This created distortion because it would not accurately reproduce the signal the speaker received. Make a subwoofer enclosure plan. We recommend Titebond or Elmer's Wood Glue. The size of the sealed chamber will affect the low frequency response. Some of the most popular enclosed marine subs are bass tubes. They will not have as much of the punch as a smaller sealed enclosure but will play lower bass overall. Here are a couple more examples of the different shape enclosures you can build. What is 1728 and where did that come from? This is the easy part. Remember that bass can travel through anything that is not solid such as the rear seat foam and even other speakers that are mounted near the woofers. Teal - bandpass enclosure Advice:     -When cutting the wood and making the box, one needs to remember all safety steps. Since the speaker is completely enclosed inside the cabinet, they have much more group delay. Optimized for higher-powered, infinite-baffle operation, the M7-12IB subwoofers are designed to provide intense bass output, while withstanding the harsh marine environment. 54" - 1.5" = 52.5" Now design the box that you want the subwoofer to be in. This means the bass will be delayed from reaching your ears at the same time as the sound energy from the other speakers in the system. Power Acoustik MW10WT 10" 600 Watt Waterproof Marine Subwoofer $46.95. To build a subwoofer one of the skills that you need are woodworking skills. We can provide you with comprehensive Subwoofer Box Design Software for creating a high performance bass box. Now we'll divide by 1728 to convert to cubic feet. You did an awesome job on the home audio box with the foam trick making the sound larger then it is etc. An ideal infinite baffle mounting can be a challenge due to the potential difficulty of sealing off the front and rear of the baffle. When assembling the box it is very important to glue all joints. We recommend MDF (medium density fiberboard) or Medite (high density fiberboard), They are rigid, heavy and not porous like some particle boards. Now we need to calculate the area of a circle the same size as the port, 2" in this case. When mounting woofers in an infinite baffle configuration, you must have a woofer that is capable of operating in an infinite baffle or ported enclosure. INTERNAL cubic feet If you use Kicker speakers, we've made calculating driver displacement real simple for you, just look at the chart on appendix page 25. I'm on quite a tight budget and the cheapest I've found is this (http://www.bluearan.co.uk/index.php?id=PAUSD211800EL&browsemode=category) but it says its operating range is 30-200hz, which I presume means it's incapable of infrabass... Have you ever dealt with car audio at all, particularly subwoofer boxes for car's etc. Mainly because there are so many choices to choose from. The other factor to consider with a large ported enclosure is they have more “group delay”. First we'll find the total cubic inches on our two known figures, just multiply them together. This step is completely up to you. Since Hport is 3" you need to add 1.5"( 1/2 Of Hport) tO Lport. Use the smallest dimension of the rectangular port as the minimum amount of space required between the port and any surface to insure unrestricted airflow. 3) After all measurements and markings have been done move the boards to a surface where you can start cutting. in. But that would be pushing the mechanical limits of the subwoofer itself and you will probably never be able to reach that. Any electrical and acoustic knowledge is not required but it could be helpful. 41"-1.5" = 39.5" The shape of the enclosure is not vital, but The Volume Is. Sealed enclosures are best for tighter bass and driver response, but … Infinity 1022MLW White 10" Reference … The smaller sealed enclosure will give you a little more output, or “bump” as it is called, before it rolls off but will start rolling off bass response at a higher frequency than a larger sealed enclosure. The brace will contact the enclosure only on its ends where it should be glued and screwed or stapled. When you use ports, you there are a few things to remember. This subwoofer box has a double bed liner finish that promotes a unique and sleek style. Some other filling material to figure enclosure volume, like ports and bracing you did an awesome job on home... 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