builds system components. 1941 – Altec Service Company acquires Lansing Manufacturing Company 1944 – Lansing and Hilliard redefine the reference theater speaker with model A-4, renamed Voice of the Theatre 1946 – Lansing leaves Altec and founds 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 – 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 1954 – Presentation of acoustic lenses developed by Bart N. Locanthi 1955 – Leo Fender integrates the D-130 model in their amplifiers, thus starting the entry of JBL into professional music 1958 – Introduction of JBL Paragon stereo speaker system 1962 – JBL creates the first 2-way studio monitor, using a high-frequency motor lens 1968 – JBL launches the 3-way speaker 4310 1969 – Sidney Harman acquires JBL 1969 – L-100, a consumer version of the 4311 is launched; it would sell over 125,000 pairs in the 70s 1969 – JBL components deliver sound at Woodstock and many other rock festivals 1973 – 4300 Series launched, including the first 4-way speaker 1975 – 4682 Model Line Array Strongbox 1979 – Technology diamond surround for control of high frequency resonances in 1979 – Development of Symmetrical Field Geometry (SFG) 1980 – Pavilion Bi-Radial Constant dispersion technology 1981 – The first Bi-Radial monitor, 4400 for the recording studio 1982 – Titanium is used as a material for compression engines 1984 – JBL acquires UREI 1986 – The first models of Control series introduced 1990 – Vented Gap Cooling technology (reduces low frequencies transducer temperature) 1991 – The first pro-audio speaker based on neodymium with Array Series 1995 – Birth of EON system 1995 – First Neodymium Differential Drive speaker 1996 – Creation of the HLA standard with Line Array Space Frame design 1999 – JBL used at Woodstock 1999 2000 – Creation of VerTec Line Array system 2000 – Birth of EVO, the intelligent loudspeaker controlled by DSP 2002 – VerTec is used for the Super Bowl, the Grammy Awards and the ceremony of the 2002 FIFA World Cup (Seoul, Korea) Portable Bluetooth speakers currently being produced (as of 2022) JBL JR Pop JBL Go 2 JBL Go