BassBox 6 Pro – A powerful speaker box design program with many professional features, including a design wizard and a huge driver database with the specs for thousands of drivers. Also includes a beautiful 364-page printed manual and an extensive on-screen manual with tutorials and sample designs.
X•over 3 Pro – An easy-to-use passive circuit design program for 2-way and 3-way crossover networks, low-pass, band-pass and high-pass filters, impedance EQ networks and L-pads. Includes a huge driver database like BassBox Pro and a beautiful 243-page printed manual and extensive on-screen manual.

BassBox 6 Pro – A powerful speaker box design program with many professional features, including a design wizard and a huge driver database with the specs for thousands of drivers. Also includes a beautiful 364-page printed manual and an extensive on-screen manual with tutorials and sample designs.
X•over 3 Pro – An easy-to-use passive circuit design program for 2-way and 3-way crossover networks, low-pass, band-pass and high-pass filters, impedance EQ networks and L-pads. Includes a huge driver database like BassBox Pro and a beautiful 243-page printed manual and extensive on-screen manual.

This is the home of BassBox, our famous speaker enclosure design program. We offer two versions: BassBox Pro and BassBox Lite. They help the speaker designer determine a good box volume and, if vented, how it should be tuned. This is controlled primarily by the desired bass response and both programs focus on that aspect of design. They do not model high-frequency or sealed-back drivers like tweeters. For that, we offer X•over Pro, our third program. It models two-way and three-way speakers to help you design a passive crossover network for them. It can import box designs from BassBox Pro and Lite and add to them the response of a midrange driver and tweeter to estimate the response of a full-range speaker.