// --> , , 1970's JBL Professional Lineup In 1970, JBL introduced the L-100 home hi-fi speakers based on the company's popular 4310 Pro Studio monitors. Initially, there were no dedicated loudspeakers for touring. The speakers are JBL 4311’s. $123,456. I replaced the old cap in the crossover with new caps - a Solen 8.2uF. Initially overseeing this remarkable period of growth was Free shipping on selected items. Once constant throughout the decade was Arnold Wolf. JBL Decade L26 speakers with grill cloth off - two way speaker from mid-1970's . // -->