The BOSE's FREESPACE DS 100F is a flush-mount passive 2-way loudspeaker featuring a 5.25" woofer, a 2.25" Twiddler driver, and a 160° conical coverage pattern for intelligible foreground music and speech playback in retail establishments, restaurants, and resorts, among other places. It can handle continuous power of up to 100 watts (400 watts peak) and has a maximum peak SPL of 111 decibels. This public address system has an integrated multi-tap transformer that can be tuned to a variety of 70V/100V voltages using a thumbwheel beneath the grille.