An enclosure has one or more loud speakers therein adjacent the front of the enclosure; and the back of the enclosure defines an opening. A pair of tilt members are mounted on inner surfaces of the enclosure at opposite sides thereof for sliding and rotating movement with respect to the enclosure. The tilt members each include an elongated straight portion and an offset portion at one end of the straight portion. The tilt members are stored completely within the enclosure and may be adjusted to extend through and rearwardly of the opening at the rear of the enclosure to engage a support surface. A locking member locks each tilt member in adjusted position. Electronic means for operating the loud speakers may be disposed within the enclosure at the top thereof.