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Welcome to AudioAnnals.Com |
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This page is a work in progress. Please visit often as updates are made almost daily. 1878 Edison Patents his Phonograph. [abstract] [DjVu178KB] 1894 Emile Berliner introduces the disk record in November. 1897 Emile Berliner trademarks the name, Gramophone and the Nipper logo (the dog, Nipper listening to a Gramophone). 1900 His Master’s Voice slogan adopted. Eldridge R. Johnson founds the Consolidated Talking Machine Company which became the Victor Talking Machine Company in 1901. [edisonng.org] Boston Symphony Hall opens October, 15 1900. [bso.org] 1925 Sidney Shure founds Shure Radio Co. that becomes Shure Incorporated 1927 Al Kahn and Lou Burroughs found Electro-Voice Frederick Kolster and Sigurd Sollie patent a free edge cone loudspeaker [abstract] [DjVu119KB] 1928 Alexander Nyman and Frank Conrad patent circuit to tame resonance in transducers [abstract] [DjVu77KB] 1929
1930
1931 Benjamin Miessner patents loudspeaker and circuit to reduce hum from vacuum tubes [abstract] [DjVu156KB] 1932 Frederick Kolster patents a loudspeaker with multiple voice coils [abstract] [DjVu88KB] 1933 Lee Bostwick patents a coaxial loudspeaker [abstract] [DjVu286KB] Alexander Nicolson patents a distributed sound system [abstract] [DjVu113KB] 1935 Harry Olson patents a loudspeaker with dual coils and improved materials [abstract] [DjVu182KB]
1937 John Minton and Abraham Ringel patent a crossover filter system for loudspeakers [abstract] [DjVu112KB] 1938 Rudalph Bierwirth patents an audio amplifier with tone control [abstract] [DjVu88KB] 1939 Juilus Weinberger patents band width and tone control circuits for hi-fidelity radio receivers [abstract] [DjVu103KB] 1946 Paul Klipsch founds Klipsch and Associates 1952 Paul Klipsch patents a high performance, low cost crossover network [abstract] [DjVu111KB] 1953 Gifford White founds White Instruments Laboratories 1954 Lou Mackenzie founds Mackenzie Laboratories 1955 Julius Lokkesmoe patents a loudspeaker with auxiliary coil to improve low and high-frequency response [abstract] [DjVu58KB] 1965 Hartley D. Peavey founds Peavey Electronics Corporation 1969 Dr. C.P. Boner patents an impedance correcting network [abstract] [DjVu72KB] 1971 Arthur & Don Davis and James Noble patents a Room Equalization Process [abstract] [DjVu256 KB] Jack Sacks patents test signal for spectral analysis of room/sound system [abstract] [DjVu207KB] 1972 Dave Blackmer patents circuit for dbx noise reduction system [abstract] [DjVu110KB] 1973 Dave Blackmer patents multiplier circuits [abstract] [DjVu82KB] 1973 Edward Haynes patents a crossover circuit with built-in frequency-impedance stability [abstract] [DjVu108KB] 1975 George Thurmond and Harro Heinz patent active feedback elimination system [abstract] [DjVu216KB] 1978 Arthur Yeap patents an active analyzer/equalizer [abstract] [DjVu77KB] 1979 Dr. C. Paul Boner dies in Austin, Texas Harvey Rubens and David Baskind patent a voltage controlled attenuator [abstract] [DjVu153KB] 1980 Paul Buff patents voltage controlled amplifier [abstract] [DjVu102KB] Gary Bergstrom a signal correction circuit for electrical gain control systems [abstract] [DjVu198KB] Fred Cizek patents a compensated crossover network [abstract] [DjVu93KB] 1981 Rane Corp. founded by Linda Arink, Rick Bernard, Dennis Bohn, Steve Brakken and Larry Winter. 1982 Robert Adams patents a gain control system [abstract] [DjVu126KB] Paul Buff patents an electronic gain control device [abstract] [DjVu143KB] Steven Eberbach patents a crossover network circuit that can be adjusted for variations in production loudspeakers [abstract] [DjVu130KB] Dave Blackmer patents gain control systems [abstract] [DjVu179KB] Steven Eberbach patents a crossover network with delay [abstract] [DjVu179KB] David Welland patents a multiplier circuit [abstract] [DjVu100KB] John Strohbeen patents a circuit for extending and smoothing the base response of a loudspeaker [abstract] [DjVu73KB] 1985 Douglas Frey patents a monolithic voltage controlled element [abstract] [DjVu220KB] 1986 Lahroy White patents a loudspeaker system utilizing an equalizer circuit [abstract] [DjVu83KB] Robert Grodinsky and David Cornwell patent a loudspeaker system with RF/EMF suppression [abstract] [DjVu149KB] 1987
1988
1989 Douglas Frey patents a dynamically biased voltage controlled element [abstract] [DjVu233KB] William Lobb patents an acoustic sound system especially suitable for two-way conversations [abstract] [DjVu 97 KB] 1990
1991
1992 Harvey Rubens patents analog multipliers [abstract] [DjVu378KB] 1993
1994
1995 Donn Werrbach patents a reflected plate amplifier [abstract] [DjVu118KB] 1996
1997 Gary Herbert patents a compensating circuit for mismatches in temperature dependent IC components [abstract] [DjVu288KB]
2002 Paul Klipsch passes May 5 at age 98
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