The BE Series features an innovative and modern " Quadrant " shape that lets you create arrays of multiple speakers for ultra-wide sound dispersion. The robust, sturdy and reliable design is equipped with one 1” high frequency tweeter and two 4″ low frequency speakers that stands for superior dispersion over a wide area. Adjustable between 70V, 100V tappings or 8 Ohm operation via rotary switch. You can mount the speakers to the wall horizontally or vertically with the included mounting kit.