X-Line system development was driven by the need for a high-level concert touring system that combined the sonic impact and vocal intelligibility of the renowned X-Array system with the uniform, predictable coverage that only a line-array configuration can deliver. The X-Line system provides wide horizontal dispersion from a single, vertical line-array with exceptional coherent wavefront summation in the vertical plane. Extended low-frequency polar control produces more uniform power response, further enhancing overall intelligibility.