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Hercules PSU
Hercules is the de facto brand name of a range of substitute, or 'upgrade,' power supplies for audiophile turntables that use a synchronous motor. A single design of PCB (printed circuit board) provides crystal oscillator regulated power for both 33⅓ rpm and 45 rpm operation, and is offered with a choice of enclosures and installation kits to suit different makes and models of turntable, such as the Linn Sondek LP12, as well as certain models from Rega, Thorens, and others. The so-called "Mose" enclosure is claimed to provide a sound quality enhancement to the standard power supply, and is offered with either an integrated or separate control switch. The products are designed by Edmund Chan, and have been produced in Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audiophile
An audiophile (from + ) is a person who is enthusiastic about high-fidelity sound reproduction. The audiophile seeks to achieve high sound quality in the audio reproduction of recorded music, typically in a quiet listening space in a room with good acoustics. Audiophile values may be applied at all stages of music reproduction—the initial audio recording, the production process, the storage of sound data, and the playback (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 music streaming services, laptop or cell phone speakers, and low-cost 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 ... [...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] |
Synchronous motor
A synchronous electric motor is an AC electric motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integer number of AC cycles. Synchronous motors use electromagnets as the stator of the motor which create a magnetic field that rotates in time with the oscillations of the current. The rotor with permanent magnets or electromagnets turns in step with the stator field at the same rate and as a result, provides the second synchronized rotating magnet field. Doubly fed synchronous motors use independently-excited multiphase AC electromagnets for both rotor and stator. Synchronous and induction motors are the most widely used AC motors. Synchronous motors rotate at a rate locked to the line frequency since they do not rely on induction to produce the rotor's magnetic field. Induction motors require ''slip'': the rotor must rotate at a frequency slightly slower than the AC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printed Circuit Board
A printed circuit board (PCB), also called printed wiring board (PWB), is a Lamination, laminated sandwich structure of electrical conduction, conductive and Insulator (electricity), insulating layers, each with a pattern of traces, planes and other features (similar to wires on a flat surface) Chemical milling, etched from one or more sheet layers of copper laminated onto or between sheet layers of a non-conductive substrate. PCBs are used to connect or Electrical wiring, "wire" Electronic component, components to one another in an electronic circuit. Electrical components may be fixed to conductive pads on the outer layers, generally by soldering, which both electrically connects and mechanically fastens the components to the board. Another manufacturing process adds Via (electronics), vias, metal-lined drilled holes that enable electrical interconnections between conductive layers, to boards with more than a single side. Printed circuit boards are used in nearly all e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Oscillator
A crystal oscillator is an electronic oscillator Electrical circuit, circuit that uses a piezoelectricity, piezoelectric crystal as a frequency selective surface, frequency-selective element. The oscillator frequency is often used to keep track of time, as in quartz clock, quartz wristwatches, to provide a stable clock signal for digital data, digital integrated circuits, and to stabilize frequencies for radio transmitters and radio receiver, receivers. The most common type of piezoelectric resonator used is a quartz crystal, so oscillator circuits incorporating them became known as crystal oscillators. However, other piezoelectric materials including polycrystalline ceramics are used in similar circuits. A crystal oscillator relies on the slight change in shape of a quartz crystal under an electric field, a property known as inverse piezoelectricity. A voltage applied to the electrodes on the crystal causes it to change shape; when the voltage is removed, the crystal generates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LP Record
The LP (from long playing or long play) is an Analog recording, analog sound storage medium, specifically a phonograph record format characterized by: a speed of revolutions per minute, rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk. Introduced by Columbia Records in 1948, it was soon adopted as a new standard by the entire US record industry and, apart from a few relatively minor refinements and the important later addition of stereophonic sound in 1957, it remained the standard format for record albums during a period in popular music known as the album era. LP was originally a trademark of Columbia and competed against the smaller 7-inch sized Single (music), "45" or "single" format by RCA Victor, eventually ending up on top. Today in the vinyl revival era, a large majority of records are based on the LP format and hence the LP name continues to be in use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gramophone Record
A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph (or "gramophone", "turntable", or "record player"). Records have been produced in different formats with playing times ranging from a few minutes to around 30 minutes per side. For about half a century, the discs were commonly made from shellac and these records typically ran at a rotational speed of 78 rpm, giving it the nickname "78s" ("seventy-eights"). After the 1940s, "vinyl" records made from polyvinyl chloride (PVC) became standard replacing the old 78s and remain so to this day; they have since been produced in various sizes and speeds, most commonly 7-inch discs pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linn Sondek LP12
The Linn Sondek LP12 (often shortened to Sondek or LP12) is a transcription turntableGreenberg, Corey (1 December 1993)"Linn Sondek LP12 turntable & Klyde phono cartridge". ''Stereophile'' produced by Glasgow-based Linn Products, manufacturers of hi-fi, home theatre, and multi-room audio systems. Its name is derived from the 12" vinyl LP (long play gramophone record). ''Hi-Fi Choice'' reviewers voted the LP12 "the most important hi-fi component ever sold in the UK"Hi-Fi that Rocked the World , ''Hi-fi Choice'', 20 July 2006 and ''The Absolute Sound'' ranked it the second most significant turntable of all time in 2011. Linn named their flagship CD player the Sondek CD12. History The Sondek LP12 turntable, introduced in 1972, uses a su ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rega Research
Rega Research Ltd. is a British audio equipment manufacturer. Rega was founded in 1973. The company's name was formed of the initials of its two founders (RElph & GAndy). Rega are widely known for their turntables – most notably the iconic Rega Planar 3, cartridges and tonearms, and has produced award-winning amplification and speakers for over 20 years. In addition to manufacturing products under their own brand name, they have also served as an original equipment manufacturer of turntables and tonearms for other companies such as NAD and Rotel. History In addition to making its own brand products, Rega is an OEM supplier. For example, Rega arms or variants are found in numerous other audiophile turntables. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thorens
Thorens is a formerly Swiss manufacturer of high-end audio equipment. Thorens is historically renowned for the range of phonographs (turntables) the manufacturer produces. In addition to audio playback equipment, Thorens is also a historical manufacturer of harmonicas and has been separately a producer of Swiss-made cigarette lighters, most notably the button actuated "automatic lighter". History In 1883, the Thorens family business was first registered in Sainte-Croix (Ste-Croix), Vaud, Switzerland by Hermann Thorens. An initial producer of musical boxes and clock movements (which they were still producing in the 1950s), as well a cigarette lighters, they started producing Edison-type phonographs in 1903. In 1928, they produced their first electric (motor-drive) record player, and went on to produce a range of audiophile record players in the 1950s and 1960s which are, even today, regarded as high-end audio equipment, and are much sought-after, for example, the belt-drive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ceded Hong Kong Island in 1841–1842 as a consequence of losing the First Opium War. The colony expanded to the Kowloon Peninsula in 1860 and was further extended when the United Kingdom obtained a 99-year lease of the New Territories in 1898. Hong Kong was occupied by Japan from 1941 to 1945 during World War II. The territory was handed over from the United Kingdom to China in 1997. Hong Kong maintains separate governing and economic systems from that of mainland China under the principle of one country, two systems. Originally a sparsely populated area of farming and fishing villages,. the territory is now one of the world's most signific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
