JBL CSS8018 8" Commercial Series Ceiling SpeakerJBL's Commercial Series Ceiling Speakers provide excellent performance for paging and background music applications. High sensitivity across the product line provides maximum sound level, even at low tap settings. Features: Very high 97 dB sensitivity 10 Watt multi tap transformer for 100V, 70V, and 25V distributed speaker lines Driver Size (dual cone): 200 mm (8 in) Driver Sensitivity (mid range, 1W, 1m): 97 dB Frequency Range (installed in CSS