The following projects have been designed and built over the past few years using my MathCad computer models. Each project represents an advance in the modeling methods and the MathCad worksheets to make the design analysis more accurate. Lowther DX Series of Drivers in a ML TL Project (completed 5/12/03 and updated 12/20/03) Jordan JX92S OB with a Goldwood GW-1858 Woofer in an H Frame Project (completed 2/07/09)