This pair of Control 28 Audio Speakers has 2 of the largest JBL Professional's Control Contractor Series indoor/outdoor loudspeakers. Their rich sonic character makes the Control 28 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 unique InvisiBall mounting hardware makes short work of permanent installation. The InvisiBall mounting method adds the benefit of vertical rotation of up to 37° off-axis and horizontal rotation of up to 44° off-axis. Because InvisiBall adjustments are made through a hidden access behind the logo badge, the grille never needs to be removed and there exists a high degree of theft deterrence as well. The Control 28s readily accept a variety of paints and finishes to match any decor. Weather resistance is maximized on the Control 28 Speakers by coating the woofer cones in polypropylene and terminating its circumference in JBL's WeatherEdge, a seamless, rubberized extension of the woofer surround that provides added protection to critical transducer elements. The polycarbonate tweeter diaphragms are reinforced with a thin film of titanium for added rigidity and endurance against sun, salt and moisture. Zinc-plated grilles resist rusting in the harshest conditions. You can't go wrong with speakers from the company whose name is synonymous with cinema sound and was voted number one in the recording industry in 1976 (the heyday of recording) by studio professionals. Today, JBL monitors are used by Grammy winners such as Frank Fillipetti (Ray Charles, Korn, Billy Joel, Kiss) and Nate Kunkel (B.B. King, Sting, Crystal Method, Maroon 5).