JBL, an audio company, makes some of the highest-end speakers and audio products from small Bluetooth speakers to cars, nightclubs and even studios. It was founded by the American audio and speaker designer James Bullough Lansing who set up two audio company names, Altec Lansing and JBL, the latter from his initials. ¹⁾

JBL was the first to offer a 4“ diaphragm driver on the market, and this was also the case in the 1950s. It was a compression driver with 375 high-frequency, with a flat response rate of 9kHz. ²⁾