Subwoofer Design

Design resources and free tools

When it comes to designing your sub, it's handy to have an up to date list of local suppliers and some quality software. The software is all free and allows you to design your subwoofer, work out your box or sonosub dimensions and choose the correct size for your port. Recently added is an overview and some software for designing QRD diffusers. The drivers, amps and pipe supplies listed here are specific to Australia, and are reasonably up to date. Prices generally have the date alongside.

• Drivers Comparison of some subwoofer drivers available in Australia
• Amplifiers Details of some amplifiers available in Australia for your powered subwoofer
• PVC Pipe sizes Some of the sizes available in Australia suitable for making ports
• WinISD A look at some of the features of this free design software from Finland
• Boxnotes Free software to optimise your enclosure dimensions and print your cutting list
• Sonosub If you prefer to use sonotube to build a cylindrical sub, this software will help
• Flare-it Free calculator to choose port and flare size to minimise turbulence
• Active High Pass Filter A solution to that excess excursion
• Subsaver Calculator for finding component values for a the Active High Pass Filter
• QRD diffusers A technical overview of diffusers based on the QRD principle   (note: heavy graphics)
• QRDude Calculator for designing advanced QRD diffusers