When connected to a CBT 70J-1 line array column speaker the CBT 70JE-1 Extension provides extended bass response extended pattern control and increased sound output levels. The combined array system provides Constant Beamwidth Technology™ which represents a breakthrough in pattern control consistency utilizing complex analog beamforming and amplitude tapering to accomplish superior consistent vertical coverage without the narrow vertical beaming and out-of-coverage lobing that are typical of passive column speakers.