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HH Electronics
HH Electronics is a British amplifier manufacturer, that was founded in 1968 by Mike Harrison, Malcolm Green and Graham Lowes in Harston near Cambridge, England, where its first solid state TPA and MA range of studio quality amplifiers were designed and manufactured. These amplifiers were used by many recording and broadcasting studios, including the BBC. The company later moved to larger premises at Milton, Cambridgeshire, named the 'Dust Bowl' producing the first of the IC range of music amplifiers. The I/C100 Organ/Musical Instrument Amplifier, which gave a massive 100-watt RMS of undistorted power and featured a unique green electro-luminescent lit front panel which was to become one of HH's unique selling points, was produced with musicians specially the semi-proand the retail music equipment market in mind. The separate 412BL x 12"speakerBass/Lead Cabinet was also produced for the I/C100. The I/C100 was also put in a cabinet alled a Combowith 2 x 12" Celestion Speaker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amplifier
An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It may increase the power significantly, or its main effect may be to boost the voltage or current ( power, voltage or current amplifier). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals, producing a greater amplitude signal at its output. The ratio of output to input voltage, current, or power is termed gain (voltage, current, or power gain). An amplifier, by definition has gain greater than unity (if the gain is less than unity, the device is an attenuator). An amplifier can either be a separate piece of equipment or an electrical circuit contained within another device. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment. Amplifiers can be ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loudspeaker
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 suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Midlands (region)
The West Midlands is one of nine official regions of England at the first level of International Territorial Level for statistical purposes. It covers the western half of the area traditionally known as the Midlands. The region consists of the counties of Herefordshire, Shropshire, Staffordshire, Warwickshire, West Midlands and Worcestershire. The region has seven cities; Birmingham, Coventry, Hereford, Lichfield, Stoke-on-Trent, Wolverhampton and Worcester. The West Midlands region is geographically diverse, from the urban central areas of the West Midlands conurbation to the rural counties of Herefordshire, Shropshire and Worcestershire which border Wales. The region is landlocked. However, the longest river in the UK, the River Severn, traverses the region southeastwards, flowing through the county towns of Shrewsbury and Worcester, and the Ironbridge Gorge, a UNESCO World Heritage Site. Staffordshire is home to the industrialised Potteries conurbation, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laney Amplification
Laney Amplification is a British designer and manufacturer of guitar amplifiers, bass guitar amplifiers, cabinets, and public address systems. Laney Amplification does not sell directly to the public, instead dealing with distributors and retailers. History Laney Amplification was founded in 1967 by Lyndon Laney while playing bass guitar in Band of Joy. Lyndon's intense interest in electronics, paired with his lack of funds to purchase a proper amplifier, led to his building what would become the first Laney amp in his father's garage. As word spread of the tone supplied by Lyndon's amplifiers, he was able to supplement his income with amp sales to many local musicians, including Tony Iommi of Black Sabbath. When the Laney signature tone was heard on Black Sabbath's seminal debut album in 1970, demand became too high for the new company's manufacturing facilities. Laney began manufacturing in the Digbeth quarter of Birmingham temporarily, but ultimately settled in Cradley H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huntingdon
Huntingdon is a market town in the Huntingdonshire district in Cambridgeshire, England. The town was given its town charter by King John in 1205. It was the county town of the historic county of Huntingdonshire. Oliver Cromwell was born there in 1599 and became one of its Members of Parliament (MP) in 1628. The former Conservative Prime Minister (1990–1997) John Major served as its MP from 1979 until his retirement in 2001. History Huntingdon was founded by the Anglo-Saxons and Danes. It is first mentioned in the Anglo-Saxon Chronicle in 921, where it appears as ''Huntandun''. It appears as ''Huntedun'' in the Domesday Book of 1086. The name means "The huntsman's hill" or possibly "Hunta's hill". Huntingdon seems to have been a staging post for Danish raids outside East Anglia until 917, when the Danes moved to Tempsford, now in Bedfordshire, before they were crushed by Edward the Elder. It prospered successively as a bridging point of the River Great Ouse, a market town, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MOSFET
The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of field-effect transistor (FET), most commonly fabricated by the controlled oxidation of silicon. It has an insulated gate, the voltage of which determines the conductivity of the device. This ability to change conductivity with the amount of applied voltage can be used for amplifying or switching electronic signals. A metal-insulator-semiconductor field-effect transistor (MISFET) is a term almost synonymous with MOSFET. Another synonym is IGFET for insulated-gate field-effect transistor. The basic principle of the field-effect transistor was first patented by Julius Edgar Lilienfeld in 1925.Lilienfeld, Julius Edgar (1926-10-08) "Method and apparatus for controlling electric currents" upright=1.6, Two power MOSFETs in V_in_the_''off''_state,_and_can_conduct_a_continuous_current_of_30 surface-mount_packages._Operating_as_switches,_each_of_these_components_can_su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19-inch Rack
A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is wide. The 19 inch dimension includes the edges or "ears" that protrude from each side of the equipment, allowing the module to be fastened to the rack frame with screws or bolts. Common uses include computer servers, telecommunications equipment and networking hardware, audiovisual production gear, and scientific equipment. Overview and history Equipment designed to be placed in a rack is typically described as rack-mount, rack-mount instrument, a rack-mounted system, a rack-mount chassis, subrack, rack cabinet, rack-mountable, or occasionally simply shelf. The height of the electronic modules is also standardized as multiples of or one rack unit or U (less commonly RU). The industry-standard rack cabinet is 42U tall; however, 45U racks are also common. The term ''relay rack'' appeared first in the world of telephony. By 1911, ... [...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., loudspeakers 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 the enclosure is to prevent sound waves generated by the rearward-facing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bar Hill
Bar Hill is a purpose-built village with a population of 4,000 about 4 miles (7 km) northwest of Cambridge, England on the A14 road, just east of the Prime Meridian. History Prior to the building of the Bar Hill settlement the area was occupied by Bar Farm, named after the toll bar that was in place along the Roman Road running immediately to the North of the site. The farm house and toll gate still remain in the village. Planning for the village began in the late 1950s to alleviate the housing shortage in South Cambridgeshire. 350 acres of land was purchased from Chivers Ltd. in the parish of Dry Drayton in 1959, and a village was planned of a self-contained community of approximately 1,200 residences, all leasehold, located in closes on the interior of an outer ring road. In the face of opposition from nearby Cambridge City Council, the plan was approved in 1964, building work started in 1965, and the first residents arrived in May 1967. Cubitts, the original devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestion
Celestion is a British designer and exporter of professional loudspeakers. History Origins What became Celestion was started in Hampton Wick (suburban London) in 1924. ''Cyril French'' and his three brothers had taken over a plating works and established the ''Electrical Manufacturing and Plating Company''. They were listed as "electrical instrument manufacturers". ''Eric Mackintosh'' approached Cyril French for assistance with improving a new loudspeaker he had already filed a patent for (British Patent No. 230,552 on 15 December 1923, issued 16 March 1925). The BBC had started their programme in November 1922 and was building up new senders, public interest in radio broadcasting grew rapidly. But listeners still needed to connect either earphones or gramophone horns to the first radio receivers. Installing a loudspeaker sensitive enough in decorative cabinets quickly made these sought-after pieces of furniture in the roaring twenties. French and Mackintosh perfected the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge
Cambridge ( ) is a College town, university city and the county town in Cambridgeshire, England. It is located on the River Cam approximately north of London. As of the 2021 United Kingdom census, the population of Cambridge was 145,700. Cambridge became an important trading centre during the Roman and Viking ages, and there is archaeological evidence of settlement in the area as early as the Bronze Age. The first Town charter#Municipal charters, town charters were granted in the 12th century, although modern city status was not officially conferred until 1951. The city is most famous as the home of the University of Cambridge, which was founded in 1209 and consistently ranks among the best universities in the world. The buildings of the university include King's College Chapel, Cambridge, King's College Chapel, Cavendish Laboratory, and the Cambridge University Library, one of the largest legal deposit libraries in the world. The city's skyline is dominated by several Colleg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Power
Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts. The electrical power delivered to the loudspeaker, together with its efficiency, determines the sound power generated (with the rest of the electrical power being converted to heat). Amplifiers are limited in the electrical energy they can output, while loudspeakers are limited in the electrical energy they can convert to sound energy without being damaged or distorting the audio signal. These limits, or power ratings, are important to consumers finding compatible products and comparing competitors. Power handling In audio electronics, there are several methods of measuring power output (for such things as amplifiers) and power handling capacity (for such things as loudspeakers). Amplifiers Amplifier output power is limited by voltage, current, and temperature: * Voltage: The amp's power supply voltage limits the maximum amplitude of the waveform it can output. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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