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In 1944, the microphone was renamed the AXBT with the addition of a Ticonal magnet to increase sensitivity by 6 decibels. [1] [12] The AXBT weighed approximately 9.25 pounds (4.20 kg). [6] The microphone had a figure-of-eight polar pattern. [2] The aluminium ribbon was less than one micrometre thick. [3]
Raymond A. Litke (1920-1986) was an American electronic engineer, the inventor of a practical wireless microphone, and the first to patent the wireless microphone.He was born and raised on a farm near Alma, Kansas, but spent most of his adult life in San Jose, California.
The following is a list of defunct microphone manufacturers with articles. Aiwa; Altec Lansing; American Microphone; Ampex; Astatic; Brush Development Company; Dynaco ...
Astatic also manufactured bullet style microphones, which are extremely popular among harmonica players. The original Astatic model JT-30 was introduced in late 1939. There were many variations in different colors such as the JT-30-C, W-30, 31, JT-31, JT-40, JT-50, and Model A. It is one of the most popular microphones for blues harp players. [6]
The Turner Microphone Company was an American manufacturer of microphones in Cedar Rapids, Iowa from 1931 to 1979. Turner operated as a small company but produced and sold many well made but modestly priced microphones. [1] Many of the microphones they produced were general purpose bullet-style microphones and CB radio communications microphones.
Shure Brothers microphone, model 55S, multi-impedance "Small Unidyne" dynamic from 1951. A microphone, colloquially called a mic (/ m aɪ k /), [1] or mike, [a] is a transducer that converts sound into an electrical signal.
RCA Type 44-BX ribbon microphone from 1940 used by CBS. Dr. Harry F. Olson began working for RCA Laboratories, where he developed ribbon microphones, first with field coils and then with permanent magnets, resulting in the first ribbon microphones with bi-directional pickup pattern, the RCA Photophone PB-17 and PB-31, introduced in 1931.
Heil Sound Communications, Inc is an American manufacturer of professional audio equipment based in Fairview Heights, Illinois.The company was founded by Bob Heil in 1966, and is well known for inventions in live sound, the Heil Talk Box and a variety of high-quality microphones and headsets for use in commercial and amateur radio.
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