Atlas Sound BIA-100 Bi-Axial Horn with PD75T High Efficiency Compression Driver High-Efficiency Bi-Axial Horn Provides 130 x 60 Wide-Angle Sound Coverage Nominal Frequency Response of 350-8,000 Hz for High-Intelligibility Voice, Signaling and Full-Range Music in Indoor/Outdoor Applications Patented 180 Gimbal-Mount for Installation Flexibility Extended Frequency Response Range for Optimum Intelligibility 75 Watt Power Rating