The Control 25AV-LS is built on the same platform as our popular Control 25AV and is UL 1480 UUMW Listed for use in fire alarm and/or emergency communication systems. The Control 25AV-LS utilizes a deep cabinet, high power components and complex network to achieve extremely smooth high fidelity performance from a compact 2-way loudspeaker. Premium performance capability and even coverage ensures excellent sound quality throughout the listening area. A top-quality, low saturation transformer, enables the loudspeaker to be used on either 70 volt or 100 volt distributed speaker lines, with similar fidelity performance to the 8 ohm bypass position. The patented InvisiBall mounting method is simple to install, aims easily, and provides a high degree of theft deterrence. The cabinet accepts a variety of paints to match any décor. Weather resistance is maximized by utilizing an aluminum grille featuring polyester powder coating and liquid-tight MTC-PC2 terminal covers. Coating the woofer cone in polypropylene and terminating its circumference in JBL's WeatherEdgeTM, a seamless, butyl rubber extension of the woofer surround, protects critical transducer elements. The polycarbonate tweeter diaphragm is reinforced with a thin film of titanium for added rigidity and endurance. Nickel/zinc rust-resistant terminals ensure a secure input connection.