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Henry Kloss
Henry Kloss (February 21, 1929 – January 31, 2002) was a prominent American audio engineer and entrepreneur who helped advance high fidelity loudspeaker and radio receiver technology beginning in the 1950s. Kloss (pronounced with a long o, like "close") was an undergraduate student in physics at the Massachusetts Institute of Technology (class of 1953), but never received a degree. He was responsible for a number of innovations, including, in part, the acoustic suspension loudspeaker and the high fidelity cassette deck. In 2000, Kloss was one of the first inductees into the Consumer Electronics Association's Hall of Fame. He earned an Emmy Award for his development of a projection television system, the Advent VideoBeam 1000. Career During the course of his half-century career, Kloss founded or co-founded several significant audio and video equipment manufacturing companies, most of which were located in Cambridge, Massachusetts, at least during the period he was directly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altoona, Pennsylvania
Altoona is a city in Blair County, Pennsylvania. It is the principal city of the Altoona Metropolitan Statistical Area (MSA). The population was 43,963 at the time of the 2020 Census, making it the eighteenth most populous city in Pennsylvania. The Altoona MSA includes all of Blair County and was recorded as having a population of 122,822 at the 2020 Census, around 100,000 of whom live within a radius of the Altoona city center according to U.S. Census ZIP Code population data. This includes the adjacent boroughs of Hollidaysburg and Duncansville, adjacent townships of Logan, Allegheny, Blair, Frankstown, Antis, and Tyrone, as well as nearby boroughs of Bellwood and Newry. Having grown around the railroad industry, the city has worked to recover from industrial decline and urban decentralization experienced in recent decades. The city is home to the Altoona Curve baseball team of the Eastern League, which is the AA affiliate of the Pittsburgh Pirates Major League Baseball ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolby Noise Reduction
A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. The first was '' Dolby A'', a professional broadband noise reduction system for recording studios in 1965, but the best-known is '' Dolby B'' (introduced in 1968), a sliding band system for the consumer market, which helped make high fidelity practical on cassette tapes, which used a relatively noisy tape size and speed. It is common on high-fidelity stereo tape players and recorders to the present day, although Dolby has as of 2016 ceased licensing the technology for new cassette decks. Of the noise reduction systems, ''Dolby A'' and '' Dolby SR'' were developed for professional use. ''Dolby B'', '' C'', and '' S'' were designed for the consumer market. Aside from Dolby HX, all the Dolby variants work by companding: compressing the dynamic range of the sound during recording, and ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Singer Corporation
Singer Corporation is an American manufacturer of consumer sewing machines, first established as I. M. Singer & Co. in 1851 by Isaac Singer, Isaac M. Singer with New York lawyer Edward Cabot Clark, Edward C. Clark. Best known for its sewing machines, it was renamed Singer Manufacturing Company in 1865, then the Singer Company in 1963. It is based in La Vergne, Tennessee, near Nashville, Tennessee, Nashville. Its first large factory for mass production was built in 1863 in Elizabeth, New Jersey. History Singer's original design was the first practical sewing machine for general domestic use. It incorporated the basic eye-pointed needle and Lockstitch, lock stitch, developed by Elias Howe, who won a patent-infringement suit against Singer in 1854. Singer obtained in August 1851 for an improved sewing machine that included a circular feed wheel, thread controller, and power transmitted by gear wheels and shafting. Singer consolidated enough patents in the field to enable him ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrostatic Loudspeaker
An electrostatic loudspeaker (ESL) is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field. Design and functionality The speakers use a thin flat diaphragm usually consisting of a plastic sheet coated with a conductive material such as graphite sandwiched between two electrically conductive grids, with a small air gap between the diaphragm and grids. For low distortion operation, the diaphragm must operate with a constant charge on its surface, rather than with a constant voltage. This is accomplished by either or both of two techniques: the diaphragm's conductive coating is chosen and applied in a manner to give it a very high surface resistivity, and/or a large value resistor is placed in series between the EHT (Extra High Tension or Voltage) power supply and the diaphragm (resistor not shown in the diagram here). However, the latter technique will still allow distortion as the charge will migrate across t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selectivity (radio)
Selectivity is a measure of the performance of a radio receiver to respond only to the radio signal it is tuned to (such as a radio station) and reject other signals nearby in frequency, such as another broadcast on an adjacent channel. Selectivity is usually measured as a ratio in decibels (dB), comparing the signal strength received against that of a similar signal on another frequency. If the signal is at the adjacent channel of the selected signal, this measurement is also known as adjacent-channel rejection ratio (ACRR). Selectivity also provides some immunity to blanketing interference. LC circuits are often used as filters; the Q ("Quality" factor) determines the bandwidth of each LC tuned circuit in the radio. The L/C ratio, in turn, determines their Q and so their selectivity, because the rest of the circuit - the aerial or amplifier feeding the tuned circuit for example - will contain present resistance. For a series resonant circuit, the higher the inductance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FM Band
The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. In Europe and Africa (defined as International Telecommunication Union (ITU) region 1) and in Australia and New Zealand, it spans from 87.5 to 108 megahertz (MHz) - also known as VHF Band II - while in the Americas (ITU region 2) it ranges from 88 to 108 MHz. The FM broadcast band in Japan uses 76 to 95 MHz, and in Brazil, 76 to 108 MHz. The International Radio and Television Organisation (OIRT) band in Eastern Europe is from 65.9 to 74.0 MHz, although these countries now primarily use the 87.5 to 108 MHz band, as in the case of Russia. Some other countries have already discontinued the OIRT band and have changed to the 87.5 to 108 MHz band. Frequency modulation radio originated in the United States during the 1930s; the system was developed by the American electrical engineer Edw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Józef Hofmann
Josef Casimir Hofmann (originally Józef Kazimierz Hofmann; January 20, 1876February 16, 1957) was a Polish-American pianist, composer, music teacher, and inventor. Biography Josef Hofmann was born in Podgórze (a district of Kraków), in Austro-Hungarian Galicia (present-day Poland) in 1876. His father was the composer, conductor and pianist Kazimierz Hofmann, and his mother the singer Matylda Pindelska. He had an older sister – Zofia Wanda (born June 11, 1874, also in Krakow). Throughout their childhood, their father, Kazimierz, was married to Aniela Teofila ''née'' Kwiecińska (born on January 3, 1843, in Warsaw), who, after moving to Warsaw in 1878 with her husband, died there on October 12, 1885, entry 1392. Then the next year Kazimierz Mikołaj Hofmann married on June 17, 1886, Matylda Franciszka Pindelska - the mother of his children, (daughter of Wincenty and Eleonora ''née'' Wyszkowska, b. in 1851 in Kraków) in the Holy Cross Basilica in Warszawa. In order to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KLH (company)
KLH Audio is an American audio electronics company based in Noblesville, Indiana. Originally founded in 1957 as KLH Research and Development Corporation in Cambridge, Massachusetts, the company takes its name from the initials of its founders: Henry Kloss, Malcolm S. Low, and Josef Anton Hofmann. History The original aim of the company was to design and produce loudspeakers in speaker enclosures. KLH had sales of $17 million, employed over 500 people and sold over 30,000 speakers a year before it was sold to Singer Corporation in 1964. In 1970, KLH became a wholly-owned subsidiary of Electro Audio Dynamics (EAD) of Great Neck, New York. EAD moved KLH's headquarters to Canoga Park, Los Angeles, in 1980. Japanese conglomerate Kyocera acquired KLH in 1982, and production was shifted overseas. Kyocera later decided to stop manufacturing audio products, and sought a buyer for the KLH brand. In 1989, KLH was acquired by Wald Sound of Sun Valley, Los Angeles. In 2003, Sony f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KLH Model Eight Radio - 8-16-07
KLH may refer to: *Keyhole limpet hemocyanin, a carrier protein *Kolhapur Airport (IATA code KLH), a regional airport in Kolhapur, Maharashtra, India *Korean Light Helicopter, a designation used by the Republic of Korea Army *KLH (company), an audio company founded in 1957 in Cambridge, Massachusetts, United States * KLH-Arena, a set of ski jump hills in Murau, Austria *KLH Vajgar Jindřichův Hradec, an ice hockey team in Jindřichův Hradec, Czech Republic *WKLH WKLH (96.5 FM) is a classic rock-formatted radio station in Milwaukee, Wisconsin. The station is owned by Saga Communications. Its studios (which are shared with the other four sister stations) are located on Milwaukee's West Side and the transm ... (also known simply as KLH), a radio station in Milwaukee, Wisconsin, United States See also * KHL {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altec Lansing
Altec Lansing, Inc. is a U.S. audio electronics company founded in 1927. Their primary products are loudspeakers and associated audio electronics for professional, home, automotive and multimedia applications. Engineers at Western Electric, who later formed Altec Services Company, developed the technology for motion picture sound that was introduced in 1927, with the release of '' The Jazz Singer''. Originally, Altec Services Company serviced the theater sound systems the company founders had helped develop. In 1941 the Altec Services Company purchased the nearly bankrupt Lansing Manufacturing Company and melded the two names, forming the Altec Lansing Corporation, and with the manufacturing capabilities of the former Lansing Manufacturing Company, they quickly expanded into manufacturing horn loudspeakers. In 1958 the Altec Lansing Corporation was purchased by James Ling who made it part of LTV Ling Altec. LTV spun off Altec which it loaded down with debt first. By 1974, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
