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George Petersen is SVC's Senior Consulting Editor. He grew up in Italy, where he performed in rock bands, opening for acts such as The Searchers. Returning to America for...more

Archive for August 9th, 2010

Shure Model 55: Still Cool After All These Years

shure-55-collage.jpgAFTER MORE THAN 70 YEARS IN PRODUCTION, Shure’s Unidyne 55 series easily takes the prize for the longest running, most successful product in audio history. The story begins in 1937 with Shure engineer Benjamin Bauer looking for a single-capsule approach to creating a unidirectional microphone.

He experimented with capsules having front and rear openings that allowed sound waves to reach the diaphragm. Partially blocking the rear openings created a short phase delay that effectively cancelled the sounds from the rear. Varying the rear port resistance created various directional patterns—cardioid, hypercardioid and supercardioid—and the Unidyne was born. In 1939, Shure announced its model Unidyne 55. more

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George Petersen is an internationally recognized expert on audio production; he has written five books and more than 1,000 articles and lectured worldwide; he has been a writer and editor for SVC for 10 years and a leading voice at Mix since 1981. As an IATSE Journeyman, he has done sound reinforcement, 35/70mm motion picture projection, Dolby Stereo theater installs and film/video production. He also operates a record label, ASCAP publishing company, 24-track recording studio, and performs with the Bay Area rock ensemble ARIEL.
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