JBL Professional CSS8018 Commercial Series 10-Watt Ceiling Speaker, 8-Inch, White

Round ceiling speaker, 8 inch driver. 10 watt multi-tap transformer for 100V, 70V and 25V distributed lines. Ultra-high sensitivity 97 dB for maximum sound level, even at low tap settings. Single speaker (not a pair). Pre-assembled speaker / transformer / grille assembly. For added convenience, code-ratings, and sound control, optional matching back cans (CSS-BB8) made of zinc-plated steel with a powder-coated finish are available. Wide 110 degree conical coverage. Very high 97dB sensitivity provides maximum sound levels using minimal amplifier power. Handles up to 20 W of RMS power. Frequency Range (-10 dB): Driver/Grille Assembly: 50 Hz - 17 kHz. Installed in CSS-BB back-can: 90 Hz - 17 kHz. Excellent for paging or background music applications, including retail stores, restaurants, schools, and other facilities. High quality triple-voltage transformer (100V, 70V and 25V). Bolt Mounting Circle to Backcan: 4 points on 11.25 inch diameter. Cutout Diameter: Open-back - 8.5 inch