David B. Weems - 1922-2021 - A Tribute

DIY audio pioneer and author David B. Weems passed away on April 4, 2021 at his Newtonia Missouri home after a short illness. Mr. Weems is known to many in the speaker design and building community for his prolific authorship of DIY books, and articles for such publications as Audio, Popular Electronics, Radio Electronics, Audio Amateur, Speaker Builder, and AudioXpress.

In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. Now that turntables are back in force, this excellent project not only allows some knowledge about a vital part of the motor's rotational speed adjustment, but it also dives into one of the most crucial aspects of a record player for anyone interested in a little DIY or restoration projects. This article was originally published in audioXpress, December 2010.