Calculate speaker box volume, port length and other parameters without getting confused in formulas. Dd box design dd box design product support system setup asistencia tecnica in order to get the most performance from these nonoptimum applications we have taken a different design approach. For this example, i picked 3 scanspeak drivers for a 3way speaker the same 3 used on the crossover tutorial. While you can certainly design a box, do your own math, and add your own drivers, investing in a good piece of speaker design software will do wonders. Aj audio subwoofer box enclosure design software sub. In this video i go behind the theory of sealed vs ported boxes, and explain how both types of boxes work. Can be used for car, truck, sport utility vehicle suv, jeep automotive, guitar and home theater applications and projects. Build a ported box, sealed box for your lowfrequency speaker. Adjust the height width depth ratios to minimise problem resonances within the box. When you have completed your enclosure, it is important to make sure the speaker is at least close to your design specs. Free software the software offered here can take your speaker design to the next level boxnotes determine your enclosure dimensions taking into account the space occupied by ports and the driver.