Doug MacCallum, Co-Founder of One Systems, Dead at 62 - ProSoundNetwork.com
Pro audio exec passes after a year's battle with leukemia.

Nashville, TN (September 13, 2018)—Douglas “Doug” MacCallum, co-founder and president of Nashville-based speaker manufacturer One Systems, died at his Brentwood, TN home in mid-September, after a year’s battle with leukemia. He was 62.

Born in Pittsburgh, PA in 1956, graduating from Baldwin High School in 1974, MacCallum headed to Otterbein University in Westerville, OH, where he earned a Bachelor of Arts degree in Business Administration.

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MacCallum began his AV career in 1978 with manufacturers rep firm C. L. Pugh and Associates. Following four years at the firm, he joined Electro-Voice and then Mark IV Audio where he worked for 13 years. During his time there, he also served as president of University Sound and Altec Lansing. In 1996, he joined the AKG team as vice president and general manager of U.S. operations, and was there until 2006.

MacCallum began his career in 1978 as sales manager of Cambridge Marketing Group, a manufacturers’ rep firm, followed by a 14-year run of sales management and executive positions with Electro-Voice and its parent company, the Mark IV Audio Group (the former parent company of EV, Altec Lansing, University Sound, Cetec Vega, Klark Teknik, DDA and Midas).

He ended his Mark IV Audio tenure as vice president from 1994-96, and from there he went on to join Harman-owned AKG as vice president and general manager of U.S. operations for a decade, when the microphone and headphone manufacturer was based in Nashville.

In 2007, MacCallum co-founded loudspeaker manufacturer One Systems, Inc. One Systems is also the USA distribution partner for P.Audio’s line of sound reinforcement systems. He served as president of the company until his death.

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MacCallum is survived by his wife Jeanette, stepchildren Christina and Jacob, brother Bob, sisters Heather, Laurie and Tracy MacCallum, and many nephews, nieces, and great-nephews and nieces.