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EV Timeline: 1965 - 1986
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1965: Electro-Voice builds and opens two new production plants Tennessee, one in Sevierville and the other in Newport.
1966: A new anechoic chamber, one of the largest in the U.S., is built at the Buchanan facility.
1967: With gross annual sales approaching $20 million, EV is acquired by Gulton Industries.
The venerable RE20, still a top broadcast, production and kick drum mic after 30-plus years. |
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1968: The RE20 microphone is introduced, quickly becoming a standard in studio and broadcast applications, and later, it is in sound reinforcement for low-frequency applications such as kick drum, where its Variable D technology rejects excessive bass boost.
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1968: After retiring from Electro-Voice, Kahn establishes Ten-Tec, a manufacturer of ham radio equipment, in a new building erected across the street from EV’s Sevierville plant. (Kahn presently serves as Ten-Tec chairman of the board.)
Pioneering the use of lasers in microphone analysis. |
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Early 1970s: EV pioneers the use of holographic interferometry (laser technology) to study the motion of mic diaphragms. Initial efforts in this regard are done with the University of Michigan, with EV later bringing the laser testing process in-house.
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1972: The company is the first to include Thiele-Small parameters on woofer specification sheets, for user determination of enclosure characteristics and frequency response.
1973: EV develops “constant directivity” (CD) horn technology for dramatically improved high-frequency performance and control. Also, EV is the first to publish full sets of third-octave polar responses for horns.
"Dr. Burroughs Medicine Show" - Lou tosses a mic to make a point. |
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1974: EV introduces the 100S Entertainer, a molded plastic portable loudspeaker system that proves immensely popular.
1974: Lou Burroughs textbook, 'Microphones: Design and Application" is published, and still serves as a valuable reference source to this day.
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1963: EV becomes one of the few manufacturers ever to receive an Oscar for the development of the model 642 Cardiline, another long-range mic.
The Tapco 6000 mixer, developed by Greg Mackie. |
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Late 1970s: EV/Gulton acquire Tapco, a company founded by Greg Mackie and specializing in the development of innovative pro audio electronic products, mixers in particular. Tapco products become a mainstay of the EV line, both individually and within packaged systems such as the Entertainer.
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1980: The company's patent count surpasses 160.
1985: EastVAMP, a high-accuracy graphic technique for determining loudspeaker coverage, is made available to customers.
Neodymium technology still going strong in the new EV N/D967 dynamic mic. |
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1986: EV introduces a neodymium-based (N/DYM) magnet structure in microphone design, resulting in extended frequency response and increased power output. The concept is quickly copied by other leading mic manufacturers and later finds its way into compression drivers.
1986: Mark IV Industries acquires Gulton Industries, which now includes EV, Altec Lansing, University Sound, Cetec Vega and other leading manufacturers. These companies are formed into the Mark IV Audio Group, headed by Robert Pabst.
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