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Modeling drivers in free air without a back box.

One of King’s greatest achievements was mathematically modeling the effect of acoustic stuffing (like polyfill or fiberglass). His sheets tell the user exactly how many ounces of stuffing per cubic foot are needed to damp unwanted harmonic resonances without killing the bass.

In this article, we will focus on Martin J. King's Mathcad worksheets, which have become a valuable resource for anyone looking to learn and apply mathematical concepts using Mathcad. Who is Martin J. King, and what makes his worksheets so special?

Many of the classic sheets were written for Mathcad 11, 14, or 15.