DESC: The Control 28T is the largest of JBL Professional's Control Contractor Series indoor/outdoor loudspeakers. Its rich sonic character makes the Control 28T a perfect choice for restaurants, health clubs, under balcony, outdoor theme & water parks, or other applications where foreground/background music and paging are required. The Control 28T can be used in either 70.7V or 100V distributed-line sound systems. Taps are provided at 60W, 30W and 15W (plus a 7.5W tap for use on 70.7V systems only).The unique InvisiBall mounting hardware is included in each system and makes short work of permanent installation. The InvisiBall mounting method adds the benefit of vertical rotation of up to ±37 deg. and horizontal rotation of up to ±44 deg..