The ST2600 is a high-fidelity, full-range 6.5 ceiling speaker designed for demanding installation projects such as conference centers, hotels, casinos, and other venues that require rich, full sounding AV playback and precise background and foreground audio.Frequency range (-10 dB): 75 Hz - 20 kHz Frequency response (-3 dB): 85 Hz - 20 kHz Power handling (pink noise): 60 W Max. power handling: 120 W Sensitivity: 89 dB, 1 W @ 1 m, 1/2 space Nominal dispersion: 150 Directivity factor (Q): 8.1 averaged 500 Hz to 4 kHz Directivity factor (DI)L 7.7 averaged 500 Hz to 4 kHz Crossover frequency: 2.5 kHz Nominal impedance: 8 O Maximum SPL (low impedance): 107 dB @ 1m Transformer taps @ 70 V: 60, 30, 15, 7.5 W Transformer taps @ 100 V: n/a, 60, 30, 15 W Transducers: - Low frequency driver 6.5" - High frequency driver " Baffle: Plastic Back can: Steel Termination: 4-pole Euroblock Outside diameter: 10.3" / 260 mm Inside depth: 7.7" / 196 mm Cutout size: 9.3" / 235 mm Net weight: 7.1 lbs / 3.2 kg Shipping/gross weight (by pair): 24.9 lbs / 11.3 kg Included accessories: Mounting C-ring and tile rail Optional accessories: Plaster ring Safety Agency Rating Information: Rated for use in air handling spaces per UL1480, UL2043, NFPA70 and NFPA90. All ST2000 series ceiling speakers are in compliance with applicable fire codes.>