You would need to get a software for builder a speaker. You can perform a search in Yahoo! to get the software you need. There are specific applications for different computer systems.
The next thing to do is to purchase a component loudspeaker that is 12-15 inch wide and that is high-quality in order to obtain subwoofers that have efficient deep bass for installation in home theater and for trucks and family cars.
In your desktop computer, create a new speaker application file and input the Thiele-Small data. Thiele-Small (T-S) parameters are employed to standardize and simplify the process of making speakers of good quality. Vendors only offer them with components that are excellent. Besides, they can be found on the internet database for Thiele-Small.
After that, you should prepare some one inch planks made of plyboard to fit the sizes as instructed by the speaker software. Though medium density fiberboard (MDF) is a popular material for building subwoofer boxes, plyboard that is of high quality is cheaper. Use a saw to cut the panels to the correct size.
The panels of the box frame should then be fixed, starting from the 2 sides, the panel from the top or the bottom and the brace of the interior. The strength of the speaker box is increased by the interior support. Good quality screws and plyboard adhesive shall be used as both of them will ensure that the speaker box is fixed securely. Furniture brackets or other large clamps should be utilized to clamp the speaker box. Use a hole saw to make the back piece that would then be attached. The terminal cup should then be glued to the panel at the back.
All interior seams of the speaker box shall be sealed with sealant so as to make a cabinet that is completely airtight. Acoustic foam or any other type of material for acoustic damping shall be used to cover the interior faces of the box in order to improve its density.
When making a subwoofer that is ported the openings should be made in the front panel of the speaker. The cuts should be made with a hole saw. The hookup wires running from the terminal connectors must then be attached to the loudspeaker. A minimum of eight inches of line is required to connect to the loudspeaker.
Non-drying caulk and timber screws should be used to fasten speakers to ensure that there is an airtight seal on the speaker. FInally, use stain and creativity to finish up the speaker.