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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] |
Mark VII Productions
Mark VII Limited was the production company of actor and filmmaker Jack Webb, and was active from 1951 to his death in 1982. Many of its series were produced in association with Universal Television; most of them aired on the NBC television network in the U.S. Coincidentally, NBC and Universal are today part of the same company. The estate of Jack Webb now owns the full rights to the company's library, with the exception of the original 1954 feature film version of '' Dragnet'' (originally released by Warner Bros., but now owned by Universal Pictures), and the films '' Pete Kelly's Blues'' and ''The D.I.'' (which are controlled by original distributor Warner Bros.). However, Webb's three seminal series, '' Dragnet'' (the 1967–1970 incarnation), ''Emergency!,'' and ''Adam-12,'' are now available on DVD from either Universal or Shout! Factory, the first two under license from the Webb estate, the latter in-house since Universal was reassigned the ''Adam-12'' series copyrigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack Webb
John Randolph Webb (April 2, 1920 – December 23, 1982) was an American actor, television producer, Television director, director, and screenwriter, who is most famous for his role as Joe Friday, Sgt. Joe Friday in the Dragnet (franchise), ''Dragnet'' franchise, which he created. He was also the founder of his own production company, Mark VII Limited. Early life Webb was born in Santa Monica, California, on April 2, 1920, son of Samuel Chester Webb and Margaret (née Smith) Webb. He grew up in the Bunker Hill, Los Angeles, Bunker Hill section of Los Angeles. His father left home before Webb was born, and Webb never knew him. In the late 1920s and early 1930s, Webb lived in the parish of Our Lady of Loretto Church and attended Our Lady of Loretto Elementary School in Echo Park, Los Angeles, Echo Park, where he served as an altar boy. He then attended Belmont High School (Los Angeles), Belmont High School, near downtown Los Angeles. Webb was elected student body president o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benny Goodman
Benjamin David Goodman (May 30, 1909 – June 13, 1986) was an American clarinetist and bandleader known as the "King of Swing". From 1936 until the mid-1940s, Goodman led one of the most popular swing big bands in the United States. His concert at Carnegie Hall in New York City on January 16, 1938, is described by critic Bruce Eder as "the single most important jazz or popular music concert in history: jazz's 'coming out' party to the world of 'respectable' music." Goodman's bands started the careers of many jazz musicians. During an era of racial segregation, he led one of the first integrated jazz groups, his quartet and quintet. He performed nearly to the end of his life while exploring an interest in classical music. Early years Goodman was the ninth of twelve children born to poor Jewish emigrants from the Russian Empire. His father, David Goodman (1873–1926), came to the United States in 1892 from Warsaw in partitioned Poland and became a tailor. His mother, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Mancini
Henry Mancini ( ; born Enrico Nicola Mancini, ; April 16, 1924 – June 14, 1994) was an American composer, conductor, arranger, pianist and flautist. Often cited as one of the greatest composers in the history of film, he won four Academy Awards, a Golden Globe, and twenty Grammy Awards, plus a posthumous Grammy Lifetime Achievement Award in 1995. His works include the theme and soundtrack for the ''Peter Gunn'' television series as well as the music for ''The Pink Panther'' film series ("The Pink Panther Theme") and " Moon River" from '' Breakfast at Tiffany's''. ''The Music from Peter Gunn'' won the inaugural Grammy Award for Album of the Year. Mancini enjoyed a long collaboration in composing film scores for the film director Blake Edwards. Mancini also scored a No. 1 hit single during the rock era on the Hot 100: his arrangement and recording of the " Love Theme from ''Romeo and Juliet''" spent two weeks at the top, starting with the week ending June 28, 1969. Early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audiophile
An audiophile is a person who is enthusiastic about high-fidelity sound reproduction. An audiophile seeks to reproduce the sound of a piece of recorded music or a live musical performance, typically inside closed headphones, In-ear monitors, open headphones in a quiet listening space, or a room with good acoustics. Audiophile values may be applied at all stages of music reproduction: the initial audio recording, the production process, and the playback, which is usually in a home setting. In general, the values of an audiophile are seen to be antithetical to the growing popularity of more convenient but lower quality music, especially lossy digital file types like MP3, lower definition streaming services, and inexpensive headphones. The term ''high-end audio'' refers to playback equipment used by audiophiles, which may be bought at specialist shops and websites. High-end components include turntables, digital-to-analog converters, equalization devices, preamplifiers and amplifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damping Ratio
Damping is an influence within or upon an oscillatory system that has the effect of reducing or preventing its oscillation. In physical systems, damping is produced by processes that dissipate the energy stored in the oscillation. Examples include viscous drag (a liquid's viscosity can hinder an oscillatory system, causing it to slow down; see viscous damping) in mechanical systems, resistance in electronic oscillators, and absorption and scattering of light in optical oscillators. Damping not based on energy loss can be important in other oscillating systems such as those that occur in biological systems and bikes (ex. Suspension (mechanics)). Not to be confused with friction, which is a dissipative force acting on a system. Friction can cause or be a factor of damping. The damping ratio is a dimensionless measure describing how oscillations in a system decay after a disturbance. Many systems exhibit oscillatory behavior when they are disturbed from their position of sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latex
Latex is an emulsion (stable dispersion) of polymer microparticles in water. Latexes are found in nature, but synthetic latexes are common as well. In nature, latex is found as a milky fluid found in 10% of all flowering plants (angiosperms). It is a complex emulsion that coagulates on exposure to air, consisting of proteins, alkaloids, starches, sugars, oils, tannins, resins, and gums. It is usually exuded after tissue injury. In most plants, latex is white, but some have yellow, orange, or scarlet latex. Since the 17th century, latex has been used as a term for the fluid substance in plants, deriving from the Latin word for "liquid". It serves mainly as defense against herbivorous insects. Latex is not to be confused with plant sap; it is a distinct substance, separately produced, and with different functions. The word latex is also used to refer to natural latex rubber, particularly non-vulcanized rubber. Such is the case in products like latex gloves, latex condoms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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