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The JBL Paragon, measuring almost 9 feet (2.7 m) from left to right. The JBL D44000 Paragon is a one-piece stereo loudspeaker created by JBL that was introduced in 1957 and discontinued in 1983; its production run was the longest of any JBL speaker. [1] At its launch, the Paragon was the most expensive domestic loudspeaker on the market. [2]
1946 – JBL creates the original 'JBL signature' logo with an exclamation (!) in black and white. Designed by Jerome Gould [8] 1946 – Lansing leaves Altec and founded a new company, James B. Lansing Sound Inc. 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 ...
The former Jensen Radio Manufacturing Company was founded in 1927 by Peter Laurits Jensen, the co-inventor of the first loudspeaker, in Chicago, Illinois.The company gained popularity in its early years, rising to its peak in the mid 1940s when Jensen speakers were selected to be used in the first production of a guitar amplifier by Fender Musical Instruments Corporation.
A functional specification is a kind of requirement specification, and may show functional block diagrams. [citation needed] A design or product specification describes the features of the solutions for the Requirement Specification, referring to either a designed solution or final produced solution. It is often used to guide fabrication ...
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.
A compression driver is a small specialized diaphragm loudspeaker which generates the sound in a horn loudspeaker.It is attached to an acoustic horn, a widening duct which serves to radiate the sound efficiently into the air.
Data from International Directory of Civil Aircraft, [75] Bell 412EP Product Specifications [76] General characteristics. Crew: one-two pilots; Capacity: up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg) [5] Length: 56 ft 1 in (17.09 m) including rotors; Fuselage length: 43 ft (13 m) Height: 15 ft 0 in (4.57 m)
MasterSpec is a master guide building and construction specification system used within the United States by architects, engineers, landscape architects, and interior designers to express results expected in construction.