Tag: Control 40 Series RBI

JBL Control 40 Series RBI Installation Guide The Expansion of Directivity Control and Achievement of Constant Directivity in Affordable Ceiling Loudspeakers CONTROL 20 SERIES SMALL-FORMAT CEILING SPEAKERS Historically, one of the early steps JBL took in the direction of improved directivity control was with the Control 24 and Control 26 speakers in the 1990s. At…