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Encyclopedia > Advent Corporation

Henry Kloss (1929, Altoona, PAJanuary 31, 2002, Cambridge, MA) was a prominent audio engineer and businessman who helped advance high fidelity loudspeaker and radio receiver technology beginning in the 1950s. Kloss was responsible for a number of innovations, including 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 the first projection television system, the Advent Video Beam 1000. 1929 (MCMXXIX) was a common year starting on Tuesday (link will take you to calendar). ... Altoona is a city located in Blair County, Pennsylvania. ... January 31 is the 31st day of the year in the Gregorian calendar. ... For album titles with the same name, see 2002 (album). ... Harvard Square, May 2000 Cambridge is a city in the greater Boston area in Massachusetts, United States. ... Sound reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. ... High Fidelity is also the title of a book by Nick Hornby and a film directed by Stephen Frears, based upon Hornbys book. ... Closeup of a loudspeaker driver Wall-mounted loudspeaker. ... In radio terminology, a receiver is an electronic circuit that receives a radio signal from an antenna and decodes the signal for use as sound, pictures, navigational-position information, etc. ... The 1950s were the decade that traditionally speaking, spanned the years 1950 through 1959. ... A typical consumer hi-fi cassette deck from late 1980s, features full electronic transport, separate playback and record heads, Dolby B, C and HXPro noise reduction A cassette deck is a type of tape deck for playing or recording compact audio cassettes. ... This article is about the year 2000. ... The Consumer Electronics Association (CEA) is the industry organization for the consumer electronics industry in the United States. ... An Emmy Award. ...


Kloss (rhymes with gross) was a student in physics at Massachusetts Institute of Technology (class of 1953), but never received a degree. He co-founded Acoustic Research Corporation (AR) with Edgar Villchur in 1954. Villchur, a former teacher of Kloss, had conceived a novel way of building an accurate loudspeaker. Together they developed the AR Model 1, which changed the way that speakers were designed. Until then, speakers of quality had to be quite large. By using an enclosure with a sealed air cavity behind the speaker cone which acted as a spring to damp woofer motion, they were able to make less-expensive, bookshelf-size speakers. Although they were inefficient in power consumption compared to ported designs, they had extremely low distortion. The AR-1 was the first commercial acoustic suspension loudspeaker. The first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density. ... The Massachusetts Institute of Technology, or MIT, is a private research university located in the city of Cambridge, Massachusetts, USA. Its mission and culture are guided by an emphasis on teaching and research grounded in practical applications of science and technology. ... Acoustic Research is a brand of Hi-Fi loudspeakers formerly produced by Acoustic Research Corporation of Massachusetts and now by Audiovox electronics company. ... 1954 (MCMLIV) was a common year starting on Friday of the Gregorian calendar. ... It has been suggested that Coil spring be merged into this article or section. ... A Sony 9 inch woofer Woofer is the term for a loudspeaker driver that is designed to produce low frequency sounds, typically from around 40 hertz up to a few hundred hertz. ...

Kloss began his custom of eponymous products by lending his last name's initial to KLH as a founder in 1957, along with Malcolm Low and J. Anton Hofmann (son of pianist Józef Hofmann) who had also been investors in AR. There Kloss continued to build speakers such as the classic KLH Model 6 and produced one of the first small FM radios with high selectivity, the Model 8. He also created the first solid state record player, the KLH Model 11. In 1968, he collaborated with Ray Dolby of Dolby Laboratories to develop the B version of the Dolby noise reduction system to reduce tape hiss. This resulted in the KLH Model 40 reel-to-reel tape recorder, Dolby's first foray into the consumer product market. An eponym is the name of a person, whether real or fictitious, which has (or is thought to have) given rise to the name of a particular place, tribe, discovery or other item. ... KLH is an audio company founded in 1957 by Henry Kloss, Malcolm Lowe, and J. Anton Hoffman. ... 1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar. ... Józef Kazimierz Hofmann (January 20, 1876 - February 16, 1957) was a Polish-American pianist and composer. ... In most of the world, the FM broadcast band, used for broadcasting FM radio stations, goes from 87. ... Selectivity is a measure of the performance of a radio receiver to respond only to the tuned transmission (such as a radio station) and reject other signals nearby, such as another broadcast on an adjacent channel. ... In electronics, solid state circuits are those that do not contain vacuum tubes. ... Edison cylinder phonograph from about 1899 The phonograph, or gramophone, was the most common device for playing recorded sound from the 1870s through the 1980s. ... 1968 (MCMLXVIII) was a leap year starting on Monday (the link is to a full 1968 calendar). ... ` Dolby (left) is inducted into the NIHF Ray Dolby (born January 18, 1933) is the American inventor of the noise reduction system known as Dolby NR. He is the founder and chairman of Dolby Laboratories, and a billionaire. ... Dolby Laboratories, Inc. ... Dolby NR is a noise reduction system developed by Dolby Laboratories for use in analogue magnetic tape recording. ...

Kloss founded Advent Corporation in 1967. The name came from the legal description the advent corporation ("advent" means approaching in Latin) used in the incorporation documents before the actual name is selected. The original goal had been to develop a projection television, but by 1969 he had quit KLH to build a remarkable dual driver speaker system with 10 inch (25 cm) woofer called simply the Advent Loudspeaker (later renamed the Larger Advent). It rivaled the sound of the then top-line AR Model 3a (which used three drivers and a 12 inch (30 cm) woofer), but only cost about one third as much. He then went to work on increasing the fidelity of cassette tapes, a format that had originally been meant to be used only for dictation. Kloss introduced the Advent 201 in 1971, incorporating Dolby B along with chromium dioxide tape to create the first high fidelity cassette deck. 1967 (MCMLXVII) was a common year starting on Sunday of the Gregorian calendar (the link is to a full 1967 calendar). ... Latin is an ancient Indo-European language originally spoken in the region around Rome called Latium. ... Incorporation (abbreviated Inc. ... 1969 (MCMLXIX) was a common year starting on Wednesday (the link is to a full 1969 calendar). ... For the meaning of cassette in genetics, see cassette (genetics). ... Speech recognition technologies allow computers equipped with a source of sound input, such as a microphone, to interpret human speech, e. ... 1971 (MCMLXXI) was a common year starting on Friday (the link is to a full 1971 calendar). ... A typical consumer hi-fi cassette deck from late 1980s, features full electronic transport, separate playback and record heads, Dolby B, C and HXPro noise reduction A cassette deck is a type of tape deck for playing or recording compact audio cassettes. ...

The Advent Video Beam 1000 was finally released in 1972, the first large screen projection television for home use. This led to founding Kloss Video Corporation in 1977. He invented the Novatron tube there, which increased the efficiency of projection TVs. 1972 (MCMLXXII) was a leap year starting on Saturday. ... For the album by Ash, see 1977 (album). ... Mellotron MK II The Mellotron is an electromechanical polyphonic keyboard musical instrument originally developed and built in Birmingham, England in the early 1960s. ...

Cambridge SoundWorks was founded in 1988. That company was quite successful, producing dozens of different models ranging from the ever-present table radio of Kloss's companies to high quality speaker systems for computers. It is now a subsidiary of Creative Technology. Cambridge SoundWorks is an Andover, Massachusetts based consumer audio manufacturer and retailer. ... 1988 (MCMLXXXVIII) was a leap year starting on Friday of the Gregorian calendar. ... A Lego RCX Computer is an example of an embedded computer used to control mechanical devices. ... Creative Technology Limited (SGX: C76, NASDAQ: CREAF) is a listed manufacturer of computer multimedia products based in Singapore where the firm was initially founded by Sim Wong Hoo (born 1955) on July 1, 1981. ...

Kloss briefly went into retirement in the late 1990s, but soon found himself co-founding another company, Tivoli Audio, with long-time associate and former Cambridge SoundWorks co-founder Tom DeVesto. There, he made the Model One (mono) and Model Two (stereo) table radios using MESFET technology to increase selectivity. The high-quality tuner combined with a good speaker arrangement led some reviewers to call these radios "Bose killers." However, the Cambridge SoundWorks Model 88 had used some similar technology, leading to a lawsuit between Cambridge and Tivoli Audio. See also 1990s, the band The 1990s decade refers to the years from 1990 to 1999, inclusive, sometimes informally including popular culture from 2000 and 2001. ... Cambridge SoundWorks is an Andover, Massachusetts based consumer audio manufacturer and retailer. ... Look up mono, mono- in Wiktionary, the free dictionary. ... Symbol for stereo Stereophonic sound, commonly called stereo, is the reproduction of sound, using two independent audio channels, through a pair of widely separated speaker systems, in such a way as to create a pleasant and natural impression of sound heard from various directions as in natural hearing. ... MESFET stands for Metal-Semiconductor Field Effect Transistor. ... A Sansui TU-X1 stereo FM tuner. ... The Bose Corporation is a privately held American company based in Framingham, Massachusetts that specializes in audio equipment. ...

Kloss continued to work on other projects until his death in 2002 of a subdural hematoma. A subdural hemorrhage (SDH), is a form of traumatic brain injury in which blood collects between the dura (the outer protective covering of the brain) and the arachnoid (the middle layer of the meninges). ...

External links


  • Cambridge Soundworks Memoriam and Timeline
  • Stereophile Obituary
  • Wes Phillips (2002) Henry Kloss: The Man Who Changed Audio and Video OnHiFi.com
  • CE Hall of Fame: Henry Kloss. Consumer Electronics Association.
  • About Tivoli Audio. Tivoli Audio.
  • About KLH. KLH.



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