The BOSE's PS1 L1 S1 is a high-performance, powered, portable two-way loudspeaker system with nominal dispersion of 195° H x 10° V ideal for live music, music playback, speeches, and sound reproduction. This portable PA system may be used as a PA and monitoring system for solo artists and public speakers with up to 300 people in the audience. The 12-driver articulated line array provides wide, homogeneous sound coverage across the whole listening area—even to the far corners. With 12 drivers arranged in a vertical line array provide consistent front-to-back coverage and create less decline in sound pressure level per doubling in distance than a typical point source.