TL speakers, once thought "fussy" or unpredictable, could be engineered for flat, deep bass response comparable to much larger ported or sealed boxes. Modern Availability
The benefits of using Martin J. King's Mathcad worksheets include:
Martin J. King is known among engineering and applied-mathematics communities for creating and sharing Mathcad worksheets that demonstrate practical problem-solving, computational techniques, and worked examples across mechanics, dynamics, structural analysis, and numerical methods. Below is a concise, structured summary of the typical content, pedagogical value, and how to use and adapt such worksheets. martin j king mathcad worksheets
Using her own CNC router, she cut the labyrinthine folds from 18mm Baltic birch plywood—just as King’s worksheet specified. The path length was 2.4 meters. The taper ratio was 0.6. The stuffing density varied from 0.8 lb/ft³ near the driver to 0.2 lb/ft³ at the terminus.
This article provides a comprehensive overview of who Martin J. King is, why his Mathcad worksheets revolutionized DIY speaker design, how to use them, and where to find legitimate copies of these legendary files. TL speakers, once thought "fussy" or unpredictable, could
Furthermore, there is a niche community of engineers who still use Mathcad for work. For them, having King’s worksheets allows them to design a custom TL loudspeaker in 30 minutes, export the data to Excel for BOM generation, and order parts.
As of recent years, Mathcad has evolved (from Mathsoft to PTC), and the community has shifted toward open-source platforms like or R . However, King’s original .xmcd and .mcdx files remain perfectly usable. The path length was 2
Even slight changes in the taper or the driver’s position along the line significantly impact performance.