The SH-S720 Speaker System is a pair of 5.25" powered two-way speakers designed for indoor wall mounting. Ideal for boardrooms & classrooms requiring increased volume from projectors, TV's and interactive displays. Mounted vertically or horizontally using the mounting brackets which can rotate each speaker left or right. Simply connect your projector via RCA or AUX to produce room filling sound with 30 watts RMS. Green Power saving automatically switches the speakers ON/OFF when it detects a signal providing energy-saving efficient operation. Separate treble, bass and volume controls are located on the rear of the passive speaker for full control. Bass reflex for quality audio reproduction.