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Post by Moz on Nov 30, 2007 7:26:41 GMT 7
Photo from the BBC's Old Studio Managers archive shows Peter Harwood (3rd from Left) in the Trainee Studio Managers Course - 01/03/1962
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Post by Moz on Nov 30, 2007 7:29:38 GMT 7
Kingswood WarrenThe home of BBC Research (from the BBC Design Engineering site).
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Post by Moz on Nov 30, 2007 7:46:34 GMT 7
2002 Reunion of the BBC's Design & Engineering Dept. from the BBC Engineering site
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Post by Moz on Dec 6, 2007 10:18:24 GMT 7
Some photos from Brian Pook - Former Rogers MD The Rogers factory at Barmeston Richard Ross Malcolm Sced at the Bruel Kjaer used to test the LS3/5A ColinMarsh - van driver who turned LS3/5A production expert
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Post by Moz on Mar 25, 2008 20:19:02 GMT 7
Raymond Cooke of Kef (from the Kef site) KEF History - The 1960s KEF was founded in 1961 by an electrical engineer named Raymond Cooke in a Nissen Hut on the premises of a metal working operation called Kent Engineering & Foundry (hence KEF), on the banks of the River Medway, near Maidstone in Kent. From the beginning KEF was destined to become a company with a flair for the unusual and controversial in terms of loudspeaker engineering, design and use of materials. Within a year, KEF, under Cooke's outstanding vision, was planning loudspeakers of a three-way design with bass and midrange units using foil-stiffened, vacuum-formed, expanded polystyrene diaphragms with a Melinex or Mylar tweeter. This idea was manifested in the K1, an immediate success, followed by the bookshelf model, Celeste, a loudspeaker with an even more significant commercial success and one that helped secure the early financial stability of the new company. Re-establishing a previous relationship with the BBC in 1966, Cooke was interested in adopting another material, Neoprene (an artificial rubber) to help maintain sound quality in the mid-band by using it as the surround to the loudspeaker diaphragm, while using new materials for the diaphragm itself. Cooke was always looking for new materials at this time and, in fact, settled on Bextrene as a solution, as its lightweight plastic sheet-like properties were flexible enough for shaping and the material remained stable under varying temperature and moisture conditions and was smooth and consistent over a wide bandwidth. As a result, in 1967, two new drive units, the 5" B110 and 8" B200 appeared which, with their countless applications, found use in some 3 million units from KEF and many other loudspeaker brands throughout the world. A new, smaller tweeter also arrived, the T27, which led to the most famous BBC/KEF collaboration, the LS3/5a, of which some 2 million units were sold world-wide. A 1997 version of this acclaimed design is still in production today!
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Post by splendor on Mar 26, 2008 7:19:23 GMT 7
THe successor of the T27 are the tweeters used on the Cresta models of Kef I believe. My Tangent Monitor Six uses the same cresta tweeters, and they're good at imaging.
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