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Roksan
Roksan is a British manufacturer of high fidelity audio products for domestic use, based in Rayleigh, Essex, Rayleigh, Essex. It is best known for its influential and innovative design for hi-fi equipment, and in particular its Roksan Xerxes, Xerxes platform for playing LP records.Dudley, Art (15 May 2010)"Roksan Kandy K2 integrated amplifier" ''Stereophile'' The company Roksan was formed in 1985 by Tufan Hashemi & Touraj Moghaddam, graduates of the University of London, Imperial College London & Queen Mary, University of London, Queen Mary College. The company's first product was launched at a hi-fi show in London in 1985.Harris, Steve (4 March 2008)"Steady as a Roksan" ''Hi-fi News & Record Review'', June 2008 issue. The name Roksan itself is derived from the name of Roxana, daughter of the Achaemenid Empire, Persian King Darius III, Darius. This closely reflects the Iran, Persian heritage and roots of both Hashemi and Moghaddam. Not surprisingly many of Roksan's product na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roksan Xerxes
The Roksan Xerxes transcription turntable (often shortened to Xerxes) is a record player named after the Persian king Xerxes I and produced by London-based Roksan Audio. Designed by Roksan co-founder, Touraj Moghaddam, the Xerxes is a belt-driven turntable with a solid plinth. Launched in 1985, the sound quality of the product positioned it as a strong competitor against the established industry leader, the Linn Sondek LP12. Many reviewers use the Xerxes as a reference turntable. The production version of the Xerxes is called "Xerxes.20plus", a reference to the 20th anniversary of the launch, in 2005. History Before Touraj Moghaddam founded Roksan, he had become dissatisfied with the state of the audio arts when he heard his little television set reproduce Thelonious Monk in a more musically satisfying way than his high-end Linn/ Naim tri-amped audio system. Through experimentation, he deduced that the existing turntable design failed because the cartridge was not being ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monitor Audio
Monitor Audio is a British company that specialises in designing and manufacturing loudspeakers and sound systems. History The company was founded in 1972 by Mo Iqbal. Monitor Audio started life in a factory in Teversham near Cambridge, England. In 1976, Monitor Audio brought its manufacturing process in-house and moved to a factory in the heart of Essex. In 2000, it moved to a larger facility in nearby Rayleigh, where it remains. Monitor Audio made the manufacturing move to China in 2004. In November 2016, Monitor Audio acquired British Hi-Fi manufacturer Roksan. In April 2019, Monitor Audio acquired British Hi-Fi furniture manufacturer Blok. Monitor Audio Ltd is a British privately owned company. Technology Since launch, Monitor Audio has operated with in-house design and technology teams. Technologies brought to the market by Monitor Audio include: *C-CAM Drivers: C-CAM stands for Ceramic-Coated Aluminium/Magnesium. Conventional speaker cones are liable to flex in operation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belt-drive Turntable
There are three main types of phonograph turntable drives being manufactured today: the belt-drive, idler-wheel and direct-drive systems; the names are based upon the type of coupling used between the platter of the turntable and the motor. In a belt-drive turntable the motor is located off-center from the platter, either underneath it or entirely outside of it, and is connected to the platter or counter-platter by a drive belt made from elastomeric material. The design of the belt-drive turntable allows the use of a less expensive motor than the direct-drive turntable. Also, the elastomeric belt absorbs motor vibrations which would otherwise be picked up by the stylus. Rotational stability Rotational stability is a key goal for turntable design that produces quality output. Many belt-drive turntables with multiple speeds have mechanical devices or rely on manual effort to move the belt between different-sized pulleys on the motor shaft. Due to difficulties in designing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerxes20plus
Xerxes ( ) may refer to: People * Xerxes I of Persia, "Xerxes the Great", reigned 486–465 BC * Xerxes II of Persia, briefly reigned 424 BC * Xerxes of Sophene, ruler of Sophene and Commagene, 228–201 BC * Xerxes (Sasanian prince), 6th-century prince and general * Xerxes (name), a list of people with the name Fiction, stage and video *'' Il Xerse'' (''Xerxès'' in its 1660 French version), a 1654 opera by Francesco Cavalli * ''Xerse'' (Bononcini), a 1694 opera by Giovanni Bononcini *'' Serse'' (''Xerxes''), a 1738 opera by George Frideric Handel *''Xerxes'', a 1919 novel by Louis Couperus * ''Xerxes'' (TV series), a 1988 Swedish TV series about young adults * ''Xerxes'' (graphic novel), a 2018 graphic novel by Frank Miller Other * Xerxes Peak, a mountain in the Canadian Rockies * XerxesDZB, a Dutch professional football team based in Rotterdam *Roksan Xerxes The Roksan Xerxes transcription turntable (often shortened to Xerxes) is a record player named after the Pers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rayleigh, Essex
Rayleigh is a market town and civil parishes in England, civil parish in the Rochford (district), Rochford District in Essex, England; it is located between Chelmsford, Essex, Chelmsford and Southend-on-Sea, east of central London. It had a population of 32,150 at the census in 2011. Toponymy The name ''Rayleigh'' is Old English in origin deriving from ''rǣge'' ('female roe-deer or she-goat') and ''lēah'' ('clearing'). Therefore, the name means overall 'wood or clearing of the wild she-goats or roe-deer". History Prehistoric and Roman times There has been a scattering of stray finds around the town from Prehistoric and Roman times, including some Roman roof and hypocaust tiles found within the fabric of Rayleigh Church. This suggests that there was a Roman habitation site within the area. However, there is little evidence of any density of population here during this period. Saxon era One significant archaeological find was in the early 2000s at the western edge of Rayleig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naim Audio Amplification
Naim Audio is a specialist British manufacturer of high-end audio amplifiers well known for their self described qualities of "pace, rhythm and timing". The company has a ''sui generis'' approach to audio design, ignoring specifications and power ratings as indicators of the quality of an amplifier. Naim's approach includes, but is not limited to, absence of tone controls, the use of the DIN connectors instead of the RCA connector used almost everywhere in the home audio equipment industry, and reliance on over-engineered external power supply units (PSU) to deliver current for Transient (acoustics), musical transients. The company's two-channel amplifier made its début in 1975. History The company, established in 1973, is one of the best-known hi-fi manufacturers in the UK. Its first product was a power amplifier named ; this was soon followed by the pre-amplifier. Until 1985, Naim's activity was centred on audio amplifiers. The two-channel power amplifier that made i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Cartridge
A magnetic cartridge, more commonly called a phonograph cartridge or phono cartridge or (colloquially) a pickup, is an electromechanical transducer that is used to play phonograph records on a Phonograph, turntable. The cartridge contains a removable or permanently mounted phonograph#Stylus, stylus, the tip - usually a gemstone, such as diamond or sapphire - of which makes physical contact with the record's groove. In popular usage and in disc jockey jargon, the stylus, and sometimes the entire cartridge, is often called the needle. As the stylus tracks the serrated groove, it vibrates a cantilever on which is mounted a permanent magnet which moves between the magnetic fields of sets of electromagnetic coils in the cartridge (or vice versa: the coils are mounted on the cantilever, and the magnets are in the cartridge). The shifting magnetic fields generate an electrical current in the coils. The electrical signal generated by the cartridge can be amplifier, amplified and then c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Cinema
A home cinema, also called home theater, is a home entertainment audio-visual system that seeks to reproduce a movie theater experience and mood using consumer grade electronic video and audio equipment and is set up in a private home. In the 1980s, home cinemas typically consisted of a movie pre-recorded on a LaserDisc or VHS tape; a LaserDisc Player or VCR; and a large-screen cathode-ray tube TV set, although sometimes CRT projectors were used instead. In the 2000s, technological innovations in sound systems, video player equipment, TV screens and video projectors changed the equipment used in home cinema set-ups and enabled home users to experience a higher-resolution screen image, improved sound quality and components that offer users more options (e.g., many Blu-ray players can also stream movies and TV shows over the Internet using subscription services such as Netflix). The development of Internet-based subscription services means that 2020s-era home theatre users ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker
A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. The driver is a linear motor connected to a diaphragm, which transmits the motor's movement to produce sound by moving air. An audio signal, typically originating from a microphone, recording, or radio broadcast, is electronically amplified to a power level sufficient to drive the motor, reproducing the sound corresponding to the original unamplified signal. This process functions as the inverse of a microphone. In fact, the ''dynamic speaker'' driver—the most common type—shares the same basic configuration as a dynamic microphone, which operates in reverse as a generator. The dynamic speaker was invented in 1925 by Edward W. Kellogg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drag (physics)
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the direction of motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers, two solid surfaces, or between a fluid and a solid surface. Drag forces tend to decrease fluid velocity relative to the solid object in the fluid's path. Unlike other resistive forces, drag force depends on velocity. Drag force is proportional to the relative velocity for low-speed flow and is proportional to the velocity squared for high-speed flow. This distinction between low and high-speed flow is measured by the Reynolds number. Drag is instantaneously related to vorticity dynamics through the Josephson-Anderson relation. Examples Examples of drag include: * Net force, Net Aerodynamic force, aerodynamic or Fluid dynamics, hydrodynamic force: Drag acting opposite to the direction of movement of a solid object such as cars, aircraft, and boat hulls. * Viscou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereophile
''Stereophile'' is a monthly American audiophile magazine which reviews high-end audio equipment, such as loudspeakers and amplifiers, and audio-related news. History ''Stereophile'' was founded in 1962 by J. Gordon Holt. With the August 1987 issue, it started monthly publication. In 1998, ''Stereophile'' was acquired by the Petersen Publishing Company. At this point, it was based in Santa Fe, New Mexico. During this period, it was published eight times a year. Petersen, which was acquired by Emap Ascential (formerly EMAP) was a British-headquartered global company, specialising in events, intelligence and advisory services for the marketing and financial technology industries. It was listed on the London Stock Exchange until it was ac ..., was then sold to Primedia Inc. in 2001. Primedia sold its Enthusiast Network, a New York–based publisher of special interest magazines, to Source Interlink Media, in 2007. In March 2018, ''Stereophile'' was purchased, along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspension (vehicle)
Suspension is the system of tires, tire air, spring (device), springs, shock absorbers and Linkage (mechanical), linkages that connects a vehicle to its wheels and allows relative motion between the two. Suspension systems must support both road holding/Automobile handling, handling and ride quality, which are at odds with each other. The tuning of suspensions involves finding the right compromise. The suspension is crucial for maintaining consistent contact between the road wheel and the road surface, as all forces exerted on the vehicle by the road or ground are transmitted through the tires' contact patches. The suspension also protects the vehicle itself and any cargo or luggage from damage and wear. The design of front and rear suspension of a car may be different. History An early form of suspension on ox-drawn carts had the platform swing on iron chains attached to the wheeled frame of the carriage. This system remained the basis for most suspension systems unti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
