The XG10 is a 1.0 inch throat entry line-array waveguide. The specific transmission line acoustical design minimizes internal reflections and acoustical losses, while throat shape has been optimized for lowering air distortion. The XG10 has been optimised for obtaining a 10° vertical dispertion angle, while the horizontal coverage angle could vary from 80° to 120° depending on the specific cabinet design. The waveguide has been developed to obtain optimum performances when it will coupled with 1.0 inch exit Eighteen Sound high frequency compression drivers.