Electro-Voice
Dynacord & Electro‑Voice are part of the Bosch Communications Systems family of brands
On September 1, 1927, Lou Burroughs and Albert R. Kahn began a small business called Radio Engineers, servicing radio receivers in the basement of the Century Tire and Rubber Company in South Bend, Indiana.
On June 1, 1930, Burroughs and Kahn incorporated under the name "Electro-Voice".[2][3]