The JBL's CBT 50LA-1 passive speaker use constant beamwidth technology to provide a column speaker with highly balanced projection across a vast area.This public address system with a patent-pending design employs an array of eight full-range 2" drivers capable of 150 watts of power, resulting in constant, natural sound coverage in both horizontal and vertical directions. The CBT 50LA-1 is ideal for large rooms such as churches, school auditoriums, and theatres, and it's simple to set up and customise.