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commercial loudspeaker makers had little to offer that met their requirements. The BBC needed speakers that worked well with program material within real professional and domestic settings environments, and not just fulfil technical measurements such as frequency-response, distortion, monitors in anechoic chambers. Above all, the BBC required monitors to sound balanced, be neutral in tone, and lack colouration. Monitor usage in the industry was highly conservative, with almost monopolistic reliance on industry "standards", in spite of the sonic failings of these aging designs. The Altec 604 had a notoriously ragged
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avoidable defects". It is argued that real life low-grade sound systems are so different that it would be impossible to compensate for the characteristics of every type of system available; technical faults must not be apparent to even a minority of listeners while remaining undetected by the operating staff. It is further argued that, because of technical progress in the science of sound transmission, equipment in the studio originating the programme should have a higher standard of performance than the equipment employed in reproducing it, since the former has a longer life.
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monitors. As a result, pretty well every U.S. studio had a set of 604's and every
European studio a Tannoy Dual Concentric or two. However, in 1959, at the height of its industry dominance, Altec made the mistake of replacing the 604 with the 605A Duplex, a design widely regarded as inferior to its predecessor. There was a backlash from some record companies and studios and this allowed Altec's competitor, JBL (a company originally started by 604 designer James B. Lansing), to make inroads into the pro monitor market.
683:. While no rigid distinction exists between consumer speakers and studio monitors, manufacturers usually accent the difference in their marketing material. Generally, studio monitors are physically robust, to cope with the high volumes and physical knocks that may happen in the studio, and are used for listening at shorter distances (e.g., near field) than hi-fi speakers, though nothing precludes them from being used in a home-sized environment. In one prominent recording magazine,
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comparatively more convenient and streamlined single units, which in addition, marketeers claim a number of technical advantages. The interface between speaker and amplifier can be optimized, possibly offering greater control and precision, and advances in amplifier design have reduced the size and weight of the electronics significantly. The result has been that passive monitors have become far less common than powered monitors in project and home studios.
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them easy to work with all day (and night). Typical soft-dome systems were made by Roger
Quested, ATC, Neil Grant and PMC and were actively driven by racks of active crossovers and amplifiers. Other monitor and studio designers like Tom Hidley, Phil Newall and Sam Toyoshima continued research into the speaker/room interface and led developments in room design, trapping, absorption and diffusion to create a consistent and neutral monitoring environment.
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revolutionized monitoring by introducing the idea of close or "nearfield" monitoring. (The sound field very close to a sound source is called the "near-field." By "very close" is meant in the predominantly direct, rather than reflected, sound field. A near-field speaker is a compact studio monitor designed for listening at close distances (3 to 5 feet (0.9 to 1.5 m)), so, in theory, the effects of poor room acoustics are greatly reduced.)
530:'s use of a dozen JBL 4350 monitors, each capable of 125 dB and containing two fifteen-inch woofers and a twelve-inch mid-bass driver. Most studios, however, also used more modest monitoring devices to check how recordings would sound through car speakers and cheap home systems. A favourite "grot-box" monitor employed in this way was the Auratone 5C, a crude single-driver device that gave a reasonable facsimile of typical lo-fi sound.
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NS-10 served both domestically and professionally during the 1980s. Despite not being a "commercial product" at the outset, the BBC licensed production of the LS3/5A monitor, which it used internally. It was commercially successful in its twenty-something-year life, from 1975 until approximately 1998. The diminutive BBC speaker has amassed an "enthusiastic, focused, and ... loyal following", according to Paul Seydor in
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215:(compact or close-field) design. This is a speaker small enough to sit on a stand or desk in proximity to the listener, so that most of the sound that the listener hears is coming directly from the speaker, rather than reflecting off walls and ceilings (and thus picking up coloration and reverberation from the room). Monitor speakers may include more than one type of driver (e.g., a
553:, a design introduced in 1978 ironically for the home audio market, became the monitor of choice for many studios in the 1980s. While its sound-quality has often been derided, even by those who monitor through it, the NS-10 continues in use to this day and many more successful recordings have been produced with its aid over the past twenty five years than with any other monitor.
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quality that a more precise monitor would expose. Other producers feel that monitors should mimic home audio and car speakers, as this is what most consumers listen to music on. Still more believe that monitors need to be relentlessly unflattering, so that the producer and engineer must work hard to make recordings sound good.
301:, in a car stereo or a home stereo). While some broadcasters like the BBC generally believe in using monitors of "the highest practicable standard of performance", some audio engineers argue that monitoring should be carried out with loudspeakers of mediocre technical quality to be representative of the regular systems
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restricted area in front of the loudspeakers". The authors expressed reservations about dispersion and directionality in 2-channel systems, noting that the "face-to-face listening arrangement" was not able to give an acceptable presentation for a centrally-located observer in a domestic setting. The paper concluded:
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conservatism evident in the retention of the 604 as the standard for over twenty years began to give way to fresh technological development. Despite this, the 604 continued to be widely used - mainly because many engineers and producers were so familiar with their sonic signature that they were reluctant to change.
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signals in an endeavour to improve on nature, however, realism, or as near an approach to it as may be possible, ought surely to be regarded as the normal condition and avoidable departures from this state, while justified upon occasion, should not be allowed to become a permanent feature of the system.
689:, the number of self-amplified (active) studio monitor reviews significantly outweighs the number of passive monitor reviews over the past two decades indicating that studio monitors are predominantly self-amplified, although not exclusively so. Hi-fi speakers usually require external amplification.
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By the mid-1980s the near-field monitor had become a permanent fixture. The larger studios still had large soffit-mounted main monitors but producers and engineers spent most of their time working with near-fields. Common large monitors of the time were
Eastlake / Westlake monitors with twin 15" bass
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The 4311 was so popular with professionals that JBL introduced a domestic version for the burgeoning home-audio market. This speaker, the JBL L-100, (or "Century") was a massive success and became the biggest-selling hi-fi speaker ever within a few years. By 1975, JBL overtook Altec as the monitor of
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became the norm, the studio monitor became far more crucial to the recording process. When there was no original performance outside what existed on the tape, the monitor became the touchstone of all engineering and production decisions. As a result, accuracy and transparency became paramount and the
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In designing a loudspeaker, the BBC established the compromise that had to be established between size, weight and cost considerations. Two-way designs were preferred due to the inherently simpler crossover network, but were subject to the limitations of speaker driver technology at the time –
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It is assumed that the ideal to be aimed at in the design of a sound reproducing system is realism, i.e. that the listener should be able to imagine himself to be in the presence of the original source of sound. There is, of course, scope for legitimate experiment in the processing of the reproduced
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who had previously supplied the drivers for the
Shearer Horn in 1936, a speaker that had rapidly become the industry standard in motion-picture sound. He had also designed the smaller Iconic and this was widely employed at the time as a motion-picture studio monitor. The 604 was a relatively compact
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There are studio monitors designed for mid-field or far-field use as well. These are larger monitors with approximately 12 inch or larger woofers, suited to the bigger studio environment. They extend the width of the sweet spot, allowing "accurate stereo imaging for multiple persons". They tend to
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One of the most striking trends was the growth of soft-dome monitors. These operated without horn-loaded drivers. Horns, while having advantages in transient response and efficiency, tend to be hard to listen to over long periods. The lack of distortion of high-end dome midrange & tweeters made
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design and within a few years it became the industry standard in the United States, a position it maintained in its various incarnations (the 604 went through eleven model-changes) over the next 25 years. It was common in US studios throughout the 1950s and 60s and remained in continuous production
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are likely to be listening with; or that some technical defects are apparent only with high-grade reproducing equipment and therefore can be ignored. However, as a public broadcaster dealing with a lot of live material, the BBC holds the view that studio monitors should be "as free as possible from
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In the early years of the recording industry in the 1920s and 1930s, studio monitors were used primarily to check for noise interference and obvious technical problems rather than for making artistic evaluations of the performance and recording. Musicians were recorded live and the producer judged
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In the late 1960s JBL introduced two monitors which helped secure them pre-eminence in the industry. The 4320 was a direct competitor to the Altec 604 but was a more accurate and powerful speaker and it quickly made inroads against the industry standard. However, it was the more compact 4310 that
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To complement its larger two-way monitors for studio use, the BBC developed a small speaker for near-field monitoring of the frequency range from 400 Hz to about 20 kHz for its outside broadcasting monitoring. The principal constraints were space and situations where using headphones is
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Monitors are used by almost all professional producers and audio engineers. The claimed advantage of studio monitors is that the production translates better to other sound systems. In the 1970s, the JBL 4311's domestic equivalent, the L-100, was used in a large number of homes, while the Yamaha
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Ninety-five percent of people listen to music in their car or on a cheap home stereo; 5 percent may have better systems; and maybe 1 percent have a $ 20,000 stereo. So if it doesn't sound good on something small, what's the point? You can mix in front of these huge, beautiful, pristine, $ 10,000
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In a BBC white paper published in
January 1963, the authors explored two-channel stereophony, and remarked that it was at a disadvantage compared with multi-channel stereophony that was already available in cinemas in that "the full intended effects is apparent only to observers located within a
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Recording through unfamiliar monitors, no matter how technically advanced, was hazardous because engineers unfamiliar with their sonic signatures could make poor production decisions and it was financially unviable to give production staff expensive studio time to familiarize themselves with new
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production studios have several sets of monitors spanning the range of playback systems in the market. This may include a sampling of large, expensive speakers as may be used in movie theatres, hi-fi style speakers, car speakers, portable music systems, PC speakers and consumer-grade headphones.
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In the UK, Tannoy introduced its own coaxial design, the Dual
Concentric, and this assumed the same reference role in Europe as the Altec 604 held in the US. The British Broadcasting Corporation researchers conducted evaluations on as many speakers as they could obtain in around 1948, but found
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But it is uncertain just what tools aid translation. Some producers argue that accuracy is still the best guarantee. If a producer or audio engineer is listening to recorded tracks and mixing tracks using a "flattering" monitor speaker, they may miss subtle problems in the mic'ing or recording
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The 4310 was small enough to be placed on the recording console and listened to from much closer distances than the traditional large wall-(or "soffit") mounted main monitors. As a result, studio-acoustic problems were minimized. Smaller studios found the 4310 ideal and that monitor and its
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The main post-NS-10 trend has been the almost universal acceptance of powered monitors where the speaker enclosure contains the driving amplifiers. Passive monitors require outboard power amplifiers to drive them as well as speaker wire to connect them. Powered monitors, by contrast, are
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unsatisfactory, such as in mobile broadcasting vans. Based on scaling tests done in 1968, and detailed audio work against the LS5/8 – a large "Grade I monitor" already in use at the time – and with live sources, the BBC Research
Department developed the LS3/5, which became the famous
445:, also made the move to JBL's. Although Altec re-introduced the 604 as the "E" version Super Duplex in response to the criticism, they now had a major industry rival to contend with. Over the next decade most of the developments in studio monitor design originated from JBL.
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The achievement of suitable directional characteristics within the aesthetic and economic limitations applying to domestic equipment will however require a much greater research effort than either the corporation or the radio industry have so far been able to devote to the
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bass unit, but continually had problems with consistency of the bass units. The successful testing of a 305mm bass cone made with new thermoplastics led to development and deployment of the LS5/5 and LS5/6 monitors that occupied only 60% volume of its predecessor.
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In the 2000s, there was a trend to focus on "translation". Engineers tended to choose monitors less for their accuracy than for their ability to "translate" – to make recordings sound good on a variety of playback systems, from stock car radios and standard
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there were few high-frequency units available at the time that functioned down to 1.5 kHz, meaning that the woofer must operate in a predictable manner up to about 2 kHz. The BBC developed a two-way studio monitor in 1959, the LS5/1, using a 58mm
199:. In other words, it exhibits minimal emphasis or de-emphasis of particular frequencies, the loudspeaker gives an accurate reproduction of the tonal qualities of the source audio ("uncolored" and "transparent" are synonyms), and there will be no relative
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the performance on this basis, relying on simple tried-and-true microphone techniques to ensure that it had been adequately captured; playback through monitors was used simply to check that no obvious technical flaws had spoiled the original recording.
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systems which were mostly used in cinemas. High-end loudspeaker design grew out of the demands of the motion picture industry and most of the early loudspeaker pioneers worked in Los
Angeles where they attempted to solve the problems of cinema sound.
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to achieve the desired result. Loudspeakers are also required at various points in the audio processing chain to enable engineers to ensure that the programme is reasonably free from technical defects, such as audible distortion or background noise.
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successor, the 4311, became studio fixtures throughout the 1970s. Ironically, the 4310 had been designed to replicate the sonic idiosyncrasies of the Altec 604 but in a smaller package to cater for the technical needs of the time.
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549:, a reaction to high-tech recording and large corporate-style studios set in and do-it-yourself recording methods became the vogue. Smaller, less expensive, recording studios needed smaller, less expensive monitors and the
345:. Bi-amplification is done so that a cleaner overall sound reproduction can be obtained, since signals are easier to process before power amplification. Consumer loudspeakers may or may not have these various design goals.
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invested considerable resources in determining studio monitor suited to their different broadcasting needs, and also created their own models from first principles. A 1958 research paper identified the sound goal, in a
725:, who comprise key players in the professional monitor market. Most of the consumer audio manufacturers confine themselves to supplying speakers for home hi-fi systems. Companies that straddle both worlds, like
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sound system, regardless of the design principle or cost, has a completely flat frequency response; all speakers color the sound to some degree. Monitor speakers are assumed to be as free as possible from
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units, a wooden midrange horn and a horn-loaded tweeter. The UREI 813 was also popular. Based on the almost ageless Altec 604 with a Time-Align passive crossover network developed by
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but almost all U.S. studios continued to use it because virtually every producer and engineer knew its sound intimately and were practiced at listening through its sonic limitations.
605:"Laboratory Series" monitors were used in a few high-end studios, but with increasing costs of manufacture, they became rare. The once dominant JBL fell gradually into disfavour.
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shift of particular frequencies—meaning no distortion in sound-stage perspective for stereo recordings. Beyond stereo sound-stage requirements, a linear phase response helps
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for low and high frequency components. Both parts are amplified using separate low- and high-frequency amplifiers, and then the low-frequency part is routed to a
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Broadcasting and recording organisations employ audio engineers who use loudspeakers to assess the aesthetic merits of the programme and to tailor the balance by
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choice for most studios. The major studios continued to use huge designs mounted on the wall which were able to produce prodigious SPL's and amounts of bass.
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Also, studio monitors are made in a more physically robust manner than home hi-fi loudspeakers; whereas home hi-fi loudspeakers often only have to reproduce
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commercial recordings, studio monitors have to cope with the high volumes and sudden sound bursts that may happen in the studio when playing back
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901:"The Influence of Loudspeaker Directivity and Orientation on the Effective Audience Area in Two-Channel Stereophonic Reproduction"
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The engineer may mix programming that will sound pleasing on the widest range of playback systems used by regular listeners (i.e.
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powered monitors all you want. But no one else has these monitors, so you're more likely to end up with a translation problem."
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As a result, early monitors tended to be basic loudspeaker cabinets. The state-of-the-art loudspeakers of the era were massive
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584:, meaning the tweeter for frequencies from 1.400 Hz and above is located independently in the center of the 30 cm bass driver
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856:(Expanded Version of I.EoE. Paper Read on 23 April 1958). Report No. L-041 (1958/31), The British Broadcasting Corporation
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This article is about studio reference loudspeakers. For onstage monitor speakers for live performances, see
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As the public broadcaster in the UK, the BBC had the determinant role in defining industry standards. Its
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be used in film scoring environments, where simulation of larger sized areas like theaters is important.
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604 in 1944. This innovative driver has historically been regarded as growing out of the work of
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However, a backlash against the behemoth monitor was soon to take place. With the advent of
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that was used from 1975 to much of the 1990s and beyond by the BBC and audiophiles alike.
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replaced their Altecs with JBL D50 Monitors and a few years later their UK affiliate,
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remain true to source without encountering "smearing". An unqualified reference to a
699:. Estimates of their sales differ, but are generally in the 100,000 pairs ballpark.
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The first high-quality loudspeaker developed expressly as a studio monitor was the
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was in its infancy, having been pioneered in
Britain by an engineer who worked for
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H.D. Harwood, BSc, M.E. Whatton, C.Eng., M.I.E.E. and R.W. Mills. (October 1976)
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and project or home studios, where accurate audio reproduction is crucial. Among
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specifically designed for professional audio production applications, such as
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in a mastering studio (A near-field studio monitor can be seen on the left.)
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implies that the speaker is designed to produce relatively flat (linear)
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886:"The Design of the Studio Monitoring Loudspeakers Types LS5/5 and LS5/6"
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http://www.topstudiogear.com/difference-between-monitors-and-speakers/
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Quested HM412 main monitor, Studio 9000, PatchWerk
Recording Studios
981:"Yamaha's NS-10: The Most Important Speaker You've Never Heard Of"
821:"Near Field Vs Far Field Studio Monitors [Ultimate Guide]"
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tend to clearly differentiate their monitor and hi-fi lines.
994:"The Yamaha NS10M: Twenty Years a Reference Monitor. Why?"
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The Absolute Sound's Illustrated History of High-End Audio
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to esoteric audiophile systems. As the mix engineer
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1045:"Choosing The Best Studio Monitors For Your Music"
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670:) BBC LS3/5A manufactured under license by Spendor
592:Tannoy, Dynaudio, Genelec, and K+H studio monitors
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152:PreSonus Eris E4.5 HD Active Studio Monitor
1097:"Stirling Broadcast LS3/5a V2 Loudspeaker"
903:, BBC Engineering Division, January 1963.
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134:Learn how and when to remove this message
992:PR Newell, KR Holland & JP Newell.
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317:Amplification: Studio monitors may be "
266:A near-field passive studio monitor by
1120:(courtesy link to reproduced content)
979:Gardiner, Bryan (15 September 2010).
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72:adding citations to reliable sources
526:This trend reached its zenith with
1081:"A timeline of LS3/5A manufacture"
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764:List of loudspeaker manufacturers
1095:Seydor, Paul (2 December 2008).
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59:needs additional citations for
1027:"review search term "Monitor""
920:, pp67–9 (Courtesy link)
655:Comparison with hi-fi speakers
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945:Atkinson, John (April 2007).
912:Prakel, David (August 1979).
819:Roy, Gautam (3 August 2018).
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947:"Stirling LS3/5a V2, 2007"
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996:. report commissioned by
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964:"The Yamaha NS10 Story"
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914:"BBC's Home Service"
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800:. 1 November 2007
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124:November 2021
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79:Find sources:
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57:This article
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1142:Loudspeakers
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1053:. Retrieved
1051:. 2 May 2022
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1033:. 1994–2016.
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828:. Retrieved
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802:. Retrieved
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663:Late model (
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397:until 1998.
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327:bi-amplified
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291:clock radios
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275:audio mixing
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161:loudspeakers
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66:Please help
61:verification
58:
1083:. Ls351.com
962:Phil Ward,
951:Stereophile
668: 1998
641:has noted:
574: 1990
557:1980s–1990s
485:overdubbing
412: 1956
364:horn-loaded
297:", in club
187:, the term
1131:Categories
830:18 January
780:References
681:coloration
635:boom boxes
299:PA systems
295:boom boxes
244:unmastered
240:compressed
213:near-field
173:filmmaking
94:newspapers
1118:HiFi News
1014:emusician
983:. Gizmodo
798:Mixonline
622:Bruce Gil
469:Celestion
422:, Germany
303:end-users
279:mastering
229:subwoofer
225:bass drum
753:See also
735:Dynaudio
539:new wave
502:subject.
473:Goodmans
455:monaural
1055:14 June
804:29 June
741:, JBL,
715:Quested
711:Neumann
707:Genelec
599:Ed Long
576:) from
528:The Who
457:system:
405:Siemens
394:coaxial
349:History
339:tweeter
246:mixes.
217:tweeter
209:monitor
189:monitor
108:scholar
747:Tannoy
603:Fostex
578:Tannoy
545:, and
509:LS3/5A
420:Munich
335:woofer
319:active
221:woofer
219:and a
110:
103:
96:
89:
81:
873:p.306
676:hi-fi
613:2000s
547:lo-fi
543:indie
293:and "
201:phase
193:phase
115:JSTOR
101:books
1057:2022
832:2020
806:2022
731:ADAM
721:and
535:punk
483:and
343:horn
277:and
250:Uses
195:and
159:are
87:news
743:PMC
443:EMI
418:in
373:EMI
341:or
163:in
70:by
1133::
1116:.
1099:.
1088:^
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949:.
938:^
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893:^
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571:c.
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112:·
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