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JBL Professional
JBL is an American audio equipment manufacturer headquartered in Los Angeles, California, United States. JBL serves the customer home and professional market. The professional market includes studios, installed/tour/portable sound, cars, music production, DJ, cinema markets, etc. JBL is owned by Harman International, a subsidiary of Samsung Electronics. JBL was founded by James Bullough Lansing (1902–1949), an American audio engineer and loudspeaker designer best known for establishing two audio companies that bear his name, Altec Lansing and JBL, the latter taken from his initials. History Lansing and his business partner Ken Decker started a company in 1927, in Los Angeles, manufacturing six- and eight-inch speaker drivers for radio consoles and radio sets. The firm was named '' Lansing Manufacturing Company'', from March 1, 1927. In 1933, head of the Metro-Goldwyn-Mayer (MGM) sound department, Douglas Shearer, dissatisfied with the loudspeakers of Western Electric and R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsidiary
A subsidiary, subsidiary company or daughter company is a company owned or controlled by another company, which is called the parent company or holding company. Two or more subsidiaries that either belong to the same parent company or having a same management being substantially controlled by same entity/group are called sister companies. The subsidiary can be a company (usually with limited liability) and may be a government- or state-owned enterprise. They are a common feature of modern business life, and most multinational corporations organize their operations in this way. Examples of holding companies are Berkshire Hathaway, Jefferies Financial Group, The Walt Disney Company, Warner Bros. Discovery, or Citigroup; as well as more focused companies such as IBM, Xerox, and Microsoft. These, and others, organize their businesses into national and functional subsidiaries, often with multiple levels of subsidiaries. Details Subsidiaries are separate, distinct legal entities f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shearer Horn
A shearer is someone who shears, such as a cloth shearer, or a sheep shearer. Origins of the name include from near Bergen in Norway 1600s weden of that periodas ''Skea'' (pronounced "Skeg" meaning "beard") and Heddle (meaning market place) as migrated to The Orkney Islands where the name 'Shearer' is found in Church marriage records of the time and as quite prolific for the overall population. Members of those family Shearer migrated to Australia and New Zealand in the 19th century and represents the highest concentration of nation for the name globally Additionally, Shearers are some kind of mining machines used for continuous mining Additionally, Shearer is a surname: In sports *Alan Shearer (born 1970), English footballer *Bob Shearer (born 1948), Australian professional golfer and golf course architect * Bobby Shearer (1931–2006), Scottish footballer * Brad Shearer (born 1955), Gridiron stalwart *Dale Shearer (born 1965), Australian rugby league player * Dave Shearer (b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bart N
Bart is a masculine given name, usually a diminutive of Bartholomew, sometimes of Barton, Bartolomeo, etc. Bart is a Dutch and Ashkenazi Jewish surname, and derives from the name ''Bartholomäus'', a German form of the biblical name ''Bartholomew'' meaning 'son of talmai' in Aramaic. Given names * Bart Andrus (born 1958), American football player and coach * Bart Arens (born 1978), Dutch radio DJ * Bart Baker (born 1986), American comedian and parody musician * Bart Bassett (born 1961), Australian politician * Bart Baxter, American poet * Bart Becht (born 1956), Dutch businessman * Bart Berman (born 1938), Dutch-Israeli pianist and composer * Bart Biemans (born 1988), Belgian footballer * Bart Bok (1906–1983), Dutch-American astronomer * Bart Bongers (born 1946), Dutch water polo player * Bart Bowen (born 1967), American cyclist * Bart Bradley (1930–2006), Canadian ice hockey centre * Bart Braverman (born 1946), American actor * Bart Brentjens (born 1968), Dutch cyclis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marquardt Corporation
Marquardt Corporation was an aeronautical engineering firm started in 1944 as ‘’’Marquardt Aircraft Company’’’ and initially dedicated almost entirely to the development of the ramjet engine. Marquardt designs were developed from the mid-1940s into the early 1960s, but as the ramjet disappeared from military usage, the company turned to other fields. In 1968 Marquardt was merged with CCI Inc. of Tulsa, OK. The newly merged firm became known as "CCI-Marquardt, Inc.". That name changed back to "CCI Inc." after a few years. Throughout the 1970s and 1980s pieces of Marquardt were sold off or merged with other firms. By the 1990s, one of the remnants of the company, called ''Marquardt Manufacturing Inc.'' (MMI) was embroiled in a legal suit with its predecessor organization, which had become principally a landlord who owned the buildings and land where MMI was located. By then, most of the remaining pieces of Marquardt were part of Ferranti in England which was in bankr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnico
Alnico is a family of iron alloys which in addition to iron are composed primarily of aluminium (Al), nickel (Ni), and cobalt (Co), hence the acronym ''al-ni-co''. They also include copper, and sometimes titanium. Alnico alloys are ferromagnetic, and are used to make permanent magnets. Before the development of rare-earth magnets in the 1970s, they were the strongest type of permanent magnet. Other trade names for alloys in this family are: ''Alni, Alcomax, Hycomax, Columax'', and ''Ticonal''. The composition of alnico alloys is typically 8–12% Al, 15–26% Ni, 5–24% Co, up to 6% Cu, up to 1% Ti, and the rest is Fe. The development of alnico began in 1931, when T. Mishima in Japan discovered that an alloy of iron, nickel, and aluminium had a coercivity of , double that of the best magnet steels of the time. Properties Alnico alloys can be magnetised to produce strong magnetic fields and have a high coercivity (resistance to demagnetization), thus making strong permanent magn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Coil
A voice coil (consisting of a former, collar, and winding) is the coil of wire attached to the apex of a loudspeaker cone. It provides the motive force to the cone by the reaction of a magnetic field to the current passing through it. The term is also used for voice coil linear motors, such as those used to move the heads inside hard disk drives, which produce a larger force and move a longer distance but work on the same principle. Operation By driving a current through the voice coil, a magnetic field is produced. This magnetic field causes the voice coil to react to the magnetic field from a permanent magnet fixed to the speaker's frame, thereby moving the cone of the speaker. By applying an audio waveform to the voice coil, the cone will reproduce the sound pressure waves, corresponding to the original input signal. Design considerations Because the moving parts of the speaker must be of low mass (to accurately reproduce high-frequency sounds without being damped too much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woofer
A woofer or bass speaker is a technical term for a loudspeaker driver designed to produce low frequency sounds, typically from 50 Hz up to 1000 Hz. The name is from the onomatopoeic English word for a dog's bark, " woof" (in contrast to the name used for loudspeakers designed to reproduce high-frequency sounds, ''tweeter''). The most common design for a woofer is the electrodynamic driver, which typically uses a stiff paper cone, driven by a voice coil surrounded by a magnetic field. The voice coil is attached by adhesives to the back of the loudspeaker cone. The voice coil and the magnet form a linear electric motor. When current flows through the voice coil, the coil moves in relation to the frame according to Fleming's left hand rule for motors, causing the coil to push or pull on the driver cone in a piston-like way. The resulting motion of the cone creates sound waves, as it moves in and out. At ordinary sound pressure levels (SPL), most humans can hear down to about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-way Speaker
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or "loudspeaker", comprises one or more such speaker ''drivers'', an enclosure, and electrical connections possibly including a crossover network. The speaker driver can be viewed as a linear motor attached to a diaphragm which couples that motor's movement to motion of air, that is, sound. An audio signal, typically from a microphone, recording, or radio broadcast, is amplified electronically to a power level capable of driving that motor in order to reproduce the sound corresponding to the original unamplified electronic signal. This is thus the opposite function to the microphone; indeed the ''dynamic speaker'' driver, by far the most common type, is a linear motor in the same basic configuration as the dynamic microphone which uses such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JBL TI 5000
JBL is an American audio equipment manufacturer headquartered in Los Angeles, California, United States. JBL serves the customer home and professional market. The professional market includes studios, installed/tour/portable sound, cars, music production, DJ, cinema markets, etc. JBL is owned by Harman International, a subsidiary of Samsung Electronics. JBL was founded by James Bullough Lansing (1902–1949), an American audio engineer and loudspeaker designer best known for establishing two audio companies that bear his name, Altec Lansing and JBL, the latter taken from his initials. History Lansing and his business partner Ken Decker started a company in 1927, in Los Angeles, manufacturing six- and eight-inch speaker drivers for radio consoles and radio sets. The firm was named '' Lansing Manufacturing Company'', from March 1, 1927. In 1933, head of the Metro-Goldwyn-Mayer (MGM) sound department, Douglas Shearer, dissatisfied with the loudspeakers of Western Electric and RCA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lansing Iconic Multicell Horn Speaker 1937
Lansing () is the capital of the U.S. state of Michigan. It is mostly in Ingham County, Michigan, Ingham County, although portions of the city extend west into Eaton County, Michigan, Eaton County and north into Clinton County, Michigan, Clinton County. The 2020 United States census, 2020 census placed the city's population at 112,644, making it the List of municipalities in Michigan, sixth largest city in Michigan. The population of its metropolitan statistical area (Lansing–East Lansing metropolitan area, MSA) was 541,297 at the 2020 census, the third largest in the state after metropolitan Detroit and Grand Rapids. It was named the new state capital of Michigan in 1847, ten years after Michigan became a state. The Lansing-East Lansing Metropolitan Statistical Area, Lansing metropolitan area, colloquially referred to as "Mid-Michigan", is an important center for educational, cultural, governmental, commercial, and industrial functions. Neighboring East Lansing, Michigan, Eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
