Siegfried Linkwitz

Siegfried Linkwitz (November 23, 1935 – September 11, 2018) was a German American engineer who was noted co-inventor of the Linkwitz–Riley filter^[1] along with Russ Riley. He submitted several important technical papers to the Journal of the Audio Engineering Society and other related publications, which have become foundational to modern loudspeaker theory.^[2] Examples of his most recent work included extensive development of dipolar loudspeaker theory.^[3]

Siegfried H. Linkwitz
Born	(1935-11-23)November 23, 1935 Bad Oeynhausen, Germany
Died	September 11, 2018(2018-09-11) (aged 82) Corte Madera, California, U.S.
Alma mater	Stanford University, Darmstadt University of Technology
Known for	Microwave, RF, EMC
Scientific career
Fields	Electrical engineering
Institutions	Telefunken Hanover, Siemens Munich, Hewlett-Packard, Audio Artistry

Linkwitz was also a contributor to electronics and "DIY" loudspeaker enthusiast magazines such as Electronics (Wireless) World, and Speaker Builder magazines.^[4][5] He died in 2018 at the age of 82.^[6][7]