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Bozak
Rudolph Thomas Bozak (1910–1982) was an audio electronics and acoustics designer and engineer in the field of sound reproduction. His parents were Bohemian Czech immigrants; Rudy was born in Uniontown, Pennsylvania. Bozak studied at Milwaukee School of Engineering; in 1981, the school awarded him an honorary doctorate in engineering. Bozak married Lillian Gilleski; the two had three daughters: Lillian, Mary and Barbara. Loudspeakers Fresh out of college in 1933, Rudy Bozak began working for Allen-Bradley, an electronics manufacturer based in Milwaukee, Wisconsin. Bozak would later employ Allen-Bradley components in his own electronic designs. Bozak moved to the East Coast in 1935 to work for Cinaudagraph out of Stamford, Connecticut. Two years later he was chief engineer. At the 1939 New York World's Fair, a tower topped with a cluster of eight 27" Cinaudagraph loudspeakers in 30" frames with huge 450 lb. field coil magnets covered low frequency duties for a 2-way PA sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln Walsh
Lincoln Walsh (November 3, 1903 – November 17, 1971) was an engineer and inventor. Walsh was educated at Stevens Institute of Technology, Columbia University and at Brooklyn College. After World War II, he founded Brooks Electronics Inc. During the war, he worked with Rudy Bozak at the Dinion Coil Company in Caledonia, New York, developing high voltage power supplies for radar use. Walsh worked as a member of the War Planning Board, where he met and later married Harriet Walsh. They were residents of Millington, New Jersey for many years. They had no children. Walsh may have been involved in the development of the Kettledrum Baffle that one associates with the first Bozak speaker systems. He redesigned the "Mark II" (Colossus computer) power supply to prolong the unit's life. Later, he was a consultant on very large transformer designs for power distribution. He also developed a high-quality AM radio receiver and an aircraft collision avoidance system. Walsh´s i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Tonawanda, New York
North Tonawanda is a city in Niagara County, New York, United States. The population was 31,568 at the 2010 census. It is part of the Buffalo–Niagara Falls Metropolitan Statistical Area. The city is named after Tonawanda Creek, its south border. Tonawanda in the Seneca tongue means "Swift Running Water". Tonawanda Creek, which flows into the Niagara River, once had large stretches of rapids (see Rapids, New York) until it was tamed with the construction of the Erie Canal. The city also calls itself "The Lumber City," due to its past primary industry and once was the largest port on the Great Lakes during the height of the Erie Canal. Along Goundry Street are mansions built for the lumber barons, including 208 Goundry Street, called "Kent Place", designed by Stanford White. Many of the local residents refer to it as "The Jewel of Niagara County" due to its geographical setting between the Niagara River and Erie Canal. It is also home to the 2009 Class AA NYS Football Champio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympani
Timpani (; ) or kettledrums (also informally called timps) are musical instruments in the percussion family. A type of drum categorised as a hemispherical drum, they consist of a membrane called a head stretched over a large bowl traditionally made of copper. Thus timpani are an example of kettle drums, also known as vessel drums and semispherical drums, whose body is similar to a section of a sphere whose cut conforms the head. Most modern timpani are ''pedal timpani'' and can be tuned quickly and accurately to specific pitches by skilled players through the use of a movable foot-pedal. They are played by striking the head with a specialized drum stick called a ''timpani stick'' or ''timpani mallet''. Timpani evolved from military drums to become a staple of the classical orchestra by the last third of the 18th century. Today, they are used in many types of ensembles, including concert bands, marching bands, orchestras, and even in some rock bands. ''Timpani'' is an Italian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustic Suspension
Acoustic suspension (air suspension, closed box, sealed box) is a method of loudspeaker cabinet design and utilisation that uses one or more loudspeaker drivers mounted in a sealed box or cabinet. Acoustic suspension systems reduce bass distortion that can be caused by stiff motor suspensions in conventional loudspeakers. A compact acoustic suspension loudspeaker was described in 1954 by Edgar Villchur, and it was brought to commercial production by Villchur and Henry Kloss with the founding of Acoustic Research in Cambridge, Massachusetts. In 1960, Villchur reiterated that: ''The first aim of the acoustic suspension design, over and above uniformity of frequency response, compactness, and extension of response into the low-bass range, is to reduce significantly the level of bass distortion that had previously been tolerated in loudspeakers. This is accomplished by substituting an air-spring for a mechanical one.'' Subsequently, the theory of closed-box loudspeakers was extensive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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