The Control 23T is one of the most compact of JBL Professional"s Control Contractor Series indoor/outdoor loudspeakers, making it a perfect choice for patios, foyers, retail or other applications where foreground/background music and paging are required, with minimum aesthetic impact. It can be used in either 70.7V or 100V distributed-line sound systems. The single power tap is 5W at 70.7V and 10W at 100V. The unique InvisiBall mounting hardware makes short work of permanent installation. In addition, the InvisiBall mounting method adds the benefit of vertical rotation of up to 37° and horizontal rotation of up to 44°. Because InvisiBall adjustments are made through a hidden access behind the logo badge, the grille never needs to be removed, while providing a high-degree of theft deterrence. The Control 23T readily accepts a variety of paints and finishes to match any decor. Weather resistance is maximized by coating the woofer cone 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 diaphragm is 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..