The JBL's CBT 100LA-1 line-array column loudspeaker incorporates Constant Beamwidth Technology to deliver exceptional pattern control in a variety of indoor and outdoor applications. This public address system employs 16x2" full-range drivers that use CBT, a complicated analogue delay beam-forming, and amplitude tapering to achieve continuous vertical coverage without the limited vertical beaming and out-of-coverage lobing that are common with straight form-factor column speakers. The vertical pattern coverage can be changed from 40 degrees for medium-throw applications to 15 degrees for long-throw applications.