Microfiles: Altec Lansing (and Western Electric) 639 A/B
A look at an early two-element microphone that made its debut in the early 1940s
A look at an early two-element microphone that made its debut in the early 1940s
David Gunness and Stephen Siegel are principals of Fulcrum Acoustic, a sound reinforcement technology company developing new methods that improve the performance of audio equipment by combining advanced signal processing techniques, never previously used in audio, with solid electro-acoustical design principles.
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