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Horn Loudspeaker
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an horn (acoustic), acoustic horn to increase the overall efficiency of the driving element(s). A common form ''(right)'' consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air. Another type is a woofer driver mounted in a loudspeaker enclosure which is divided by internal partitions to form a zigzag flaring duct which functions as a horn; this type is called a ''folded horn'' speaker. The horn serves to improve the coupling efficiency between the speaker driver and the air. The horn can be thought of as an "acoustic transformer" that provides impedance matching between the relatively density, dense diaphragm material and the less-dense air. The result is greater acoustic output power from a given driver. The narrow part of the horn next to the driver is called the "throat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker Enclosure
A loudspeaker enclosure or loudspeaker cabinet is an enclosure (often rectangular box-shaped) in which speaker drivers (e.g., woofers and tweeters) and associated electronic hardware, such as crossover circuits and, in some cases, power amplifiers, are mounted. Enclosures may range in design from simple, homemade DIY rectangular particleboard boxes to very complex, expensive computer-designed hi-fi cabinets that incorporate composite materials, internal baffles, horns, bass reflex ports and acoustic insulation. Loudspeaker enclosures range in size from small "bookshelf" speaker cabinets with woofers and small tweeters designed for listening to music with a hi-fi system in a private home to huge, heavy subwoofer enclosures with multiple or even speakers in huge enclosures which are designed for use in stadium concert sound reinforcement systems for rock music concerts. The primary role of an enclosure is to prevent sound waves generated by the rearward-facing surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klipsch Audio Technologies
Klipsch Audio Technologies (also referred to as Klipsch Speakers or Klipsch Group, Inc.) is an American loudspeaker company based in Indianapolis, Indiana. Founded in Hope, Arkansas, in 1946 as 'Klipsch and Associates' by Paul W. Klipsch, the company produces loudspeaker drivers and enclosures, as well as complete loudspeakers for high-end, high-fidelity sound systems, public address applications, and personal computers. On January 6, 2011, Audiovox announced that the company had signed a "term sheet to purchase all the shares of Klipsch Group Inc". The sale was completed March 1, 2011. Horn loading Since its inception, Klipsch has promoted the use of horn-loaded speakers as part of its goal to produce speakers featuring: *High efficiency (more formally called "sensitivity"), meaning that they can be driven by relatively low-powered amplifiers *Low modulation distortion, which Paul Klipsch believed was very important *Wide dynamic range, meaning that they accurately reproduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resonance
Resonance is a phenomenon that occurs when an object or system is subjected to an external force or vibration whose frequency matches a resonant frequency (or resonance frequency) of the system, defined as a frequency that generates a maximum amplitude response in the system. When this happens, the object or system absorbs energy from the external force and starts vibrating with a larger amplitude. Resonance can occur in various systems, such as mechanical, electrical, or acoustic systems, and it is often desirable in certain applications, such as musical instruments or radio receivers. However, resonance can also be detrimental, leading to excessive vibrations or even structural failure in some cases. All systems, including molecular systems and particles, tend to vibrate at a natural frequency depending upon their structure; when there is very little damping this frequency is approximately equal to, but slightly above, the resonant frequency. When an Oscillation, oscillat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry F
Harry may refer to: Television *Harry (American TV series), ''Harry'' (American TV series), 1987 comedy series starring Alan Arkin *Harry (British TV series), ''Harry'' (British TV series), 1993 BBC drama that ran for two seasons *Harry (New Zealand TV series), ''Harry'' (New Zealand TV series), 2013 crime drama starring Oscar Kightley#Professional career, Oscar Kightley *Harry (talk show), ''Harry'' (talk show), 2016 American daytime talk show hosted by Harry Connick Jr. People and fictional characters *Harry (given name), a list of people and fictional characters with the given name, including **Prince Harry, Duke of Sussex (born 1984) *Harry (surname), a list of people with the surname Other uses *"Harry", the tunnel used in the Stalag Luft III escape ("The Great Escape") of World War II *Harry (album), ''Harry'' (album), a 1969 album by Harry Nilsson *Harry (derogatory term), derogatory term used in Norway *Harry (newspaper), ''Harry'' (newspaper), an underground newspaper in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Institute Of Electrical Engineers
The American Institute of Electrical Engineers (AIEE) was a United States–based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Institute of Electrical and Electronics Engineers (IEEE). History The 1884 founders of the American Institute of Electrical Engineers (AIEE) included some of the most prominent inventors and innovators in the then new field of electrical engineering, among them Nikola Tesla, Thomas Alva Edison, Elihu Thomson, Edwin J. Houston, and Edward Weston. The purpose of the AIEE was stated "to promote the Arts and Sciences connected with the production and utilization of electricity and the welfare of those employed in these Industries: by means of social intercourse, the reading and discussion of professional papers and the circulation by means of publication among members and associates of information thus obtained." The first president of AIE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collapsible Phonograph Horn
Collapse or its variants may refer to: Concepts * Collapse (structural) * Collapse (topology), a mathematical concept * Collapsing manifold * Collapse, the action of collapsing or telescoping objects * Collapsing user interface elements ** Accordion (GUI) -- collapsing list items ** Code folding -- collapsing subsections of programs or text ** Outliner -- supporting folding and unfolding subsections * Ecosystem collapse or Ecological collapse * Economic collapse * Gravitational collapse creating astronomical objects * Societal collapse ** Dissolution of the Soviet Union, the collapse of Soviet federalism ** State collapse * Wave function collapse, in physics Medicine and biology In medicine, collapse can refer to various forms of transient loss of consciousness such as syncope, or loss of postural muscle tone without loss of consciousness. It can also refer to: * Circulatory collapse * Lung collapse * Hydrophobic collapse in protein folding Art, entertainment and medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nipper
Nipper ( – September 1895) was a British dog. He is best known as the subject of ''His Master's Voice'' (1898), painted posthumously by his second owner, Francis Barraud. The painting became a worldwide entertainment trademark, with Nipper's likeness used across consumer electronics, record labels and entertainment retail. Background Nipper was born in 1884 in Bristol, England, and died in September 1895. He was likely a mixed-breed dog A mongrel, mutt, or mixed-breed dog is a dog that does not belong to one officially recognized Dog breed, breed, including those that result from intentional Dog breeding, breeding. Although the term ''mixed-breed dog'' is sometimes preferred, m ..., although most early sources suggest that he was a Smooth Fox Terrier, or perhaps a Jack Russell Terrier, or possibly "part Bull Terrier". He was named Nipper because he would often "nip" at the backs of visitors' legs. Nipper originally lived with his owner, Mark Henry Barraud, in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diaphragm (acoustics)
In the field of acoustics, a diaphragm is a transducer intended to inter-convert mechanical vibrations to sounds, or vice versa. It is commonly constructed of a thin membrane or sheet of various materials, suspended at its edges. The varying air pressure of sound waves imparts mechanical vibrations to the diaphragm which can then be converted to some other type of signal; examples of this type of diaphragm are found in microphones and the human eardrum. Conversely a diaphragm vibrated by a source of energy beats against the air, creating sound waves. Examples of this type of diaphragm are loudspeaker cones and earphone diaphragms and are found in air horns. Loudspeaker In an electrodynamic loudspeaker, a diaphragm is the thin, semi-rigid membrane attached to the voice coil, which moves in a magnetic gap, vibrating the diaphragm, and producing sound. It can also be called a cone, though not all speaker diaphragms are cone-shaped. Diaphragms are also found in headphones. Qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonograph
A phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration Waveform, waveforms are recorded as corresponding physical deviations of a helical or spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a ''Phonograph record, record''. To recreate the sound, the surface is similarly rotated while a playback #Stylus, stylus traces the groove and is therefore vibrated by it, faintly reproducing the recorded sound. In early acoustic phonographs, the stylus vibrated a Diaphragm (acoustics), diaphragm that produced sound waves coupled to the open air through a flaring Horn loudspeaker, horn, or directly to the listener's ears through stethoscope-type earphones. The phonograph was invented in 1877 by Thomas Edison; its use would rise the following year. Alexander Graham Bell's Volta Laboratory an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
