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1947 – JBL has a 15" speaker (38 cm), model D-130, using for the first time a 4" (100 mm) voice coil in a speaker cone; 1949 – James. B. Lansing dies of suicide; William Thomas became president of the company; 1954 – The 375 compression engine is the first 4-inch engine sold; its response extends to 9 kHz
Wharfedale Wireless Works was founded in 1932 by Gilbert Briggs, and became one of Britain's leading manufacturers of audiophile equipment, particularly loudspeakers. In addition to winning awards by groups such as the Bradford Radio Society , in mass public testing at Carnegie Hall Wharfedale speakers proved indistinguishable from live music.
These loudspeakers were manufactured at Rank Hi-Fi, Wharfedale Works in West Yorkshire by Wharfedale Loudspeakers in England . They were featured in the Gramophone magazine in July 1982. [2] This range of high-efficiency loudspeakers were released to replace their "E" Series of loudspeakers. They were originally launched with prices from £200 ...
Castle (formerly known as Castle Acoustics) is a British Loudspeaker brand, first established in 1973.. Castle Acoustics was founded in 1973 and takes its name and its logo from the 11thC historic Skipton Castle, the North Yorkshire market town of Skipton having been Castle's home from its foundation to 2006.
Wilson Audio Specialties Inc. (commonly referred to as Wilson Audio) is an American high-end audio loudspeaker manufacturing company, located in Provo, Utah.Wilson Audio was co-founded by the late David A. Wilson (1944–2018) with his wife Sheryl Lee Wilson in 1974.
Four years later, in 1915, they built a dynamic loudspeaker with a 1-inch (2.5 cm) voice coil, a 3-inch (7.6 cm) corrugated diaphragm and a horn measuring 34 inches (86 cm) with a 22-inch (56 cm) aperture. The electromagnet created a flux field of approximately 11,000 Gauss. [9]