JBL Professional JBL CBT 100LA-1 Constant Beamwidth Technology line array column

The CBT 100LA-1 doubles the CBT 50LA-1: sixteen 50 mm full-range drivers in a one-metre column. Constant Beamwidth Technology is analogue delay beam-forming plus amplitude tapering across the driver column. The point is consistent vertical coverage without the narrow beaming and out-of-coverage lobing that plain passive columns produce, which is why these turn up in reverberant rooms where intelligibility is the whole job.

Vertical coverage switches between a 15-degree narrow mode and a 40-degree broad mode; horizontal stays at 150 degrees. It runs at 5 ohms in through mode or off a 70/100 V line with 120 W, 60 W and 30 W taps. A swivel and tilt wall bracket is included, there are eighteen M6 inserts on the back, and the cabinet is IP-55 rated with the optional MTC-PC2 cover.