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2. JBL - Wikipedia

   en.wikipedia.org/wiki/JBL

   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 ...

3. JBL Paragon - Wikipedia

   en.wikipedia.org/wiki/JBL_Paragon

   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.

4. James Bullough Lansing - Wikipedia

   en.wikipedia.org/wiki/James_Bullough_Lansing

   September 29, 1949. (1949-09-29) (aged 47) San Marcos, California, US. Occupation (s) Engineer, inventor, designer. Employer (s) Lansing Manufacturing Company, Altec Lansing, JBL. James Bullough Lansing (born James Martini, January 2, 1902 – September 29, 1949) was a pioneering American audio engineer and loudspeaker designer who was most ...

5. John Layfield - Wikipedia

   en.wikipedia.org/wiki/John_Layfield

   John Charles Layfield (born November 29, 1966), [ 1 ] better known by the ring name John "Bradshaw" Layfield, [ 2 ][ 3 ] is an American professional wrestling color commentator and retired professional wrestler and football player. He is currently signed to WWE, where he is an ambassador and former wrestler and commentator for the company.

6. Subwoofer - Wikipedia

   en.wikipedia.org/wiki/Subwoofer

   From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...

7. Loudspeaker - Wikipedia

   en.wikipedia.org/wiki/Loudspeaker

   Loudspeaker. The hole below the lowest woofer is a port for a bass reflex system. A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic ...