The specific transmission line acoustical design minimizes internal reflections and acoustical losses while throat shape has been optimized for lowering air distortion. It has been optimised for obtaining a 10 degree vertical dispersion angle while the horizontal coverage angle could vary from 80 degree to 120 degree depending on the specific cabinet design. 1 in. throat entry line-array waveguide. Set of 1. - SKU: ALIAD2833_1