JBL CBT 70J-1WH High Power Line Array Speaker Column (White)The CBT 70J 1, with Constant Beamwidth Technology, represents a breakthrough in pattern control consistency, utilizing complex analog delay beam forming and amplitude tapering to accomplish superior, consistent vertical coverage without the narrow vertical beaming and out of coverage lobing that are typical of straight form factor column speakers. (shown with included grille removed) Features Asymmetrical vertical coverage sends more sound toward far