the Bose FreeSpace FS2C In-Ceiling loudspeaker: Features: Full-range 2.25-inch transducer Low-frequency range down to 83 Hz 16-ohm and 70/100V operation Front baffle-mounted tap settings and front-baffle audio connections Shared voicing across all FS models for consistent tonal quality Transducers offer clear voice reproduction and smooth response for background music In-ceiling, surface-mount, and pendant-mount options for tailored mix-and-match installations Available in black and white enclosures with removable logos Euroblock inputs and front-baffle input location on in-ceiling models UL 1480 ULC-S541-listed for use in fire alarm and signaling systems in life safety applications Bose sound quality with significant upgrades in durability, design, and ease of installation Ideal for almost any commercial space, including background music and voice announcement applications Five loudspeaker models with two distinct levels of sound to choose from Customizable systems with tailored mix-and-match installations Full suite of accessories available to handle a wide range of applications and mounting options UL-listed for use in fire alarm and signaling systems in life safety applications Specifications: Dimensions (H x Dia): 4.3" x 8.3" (109 mm x 210 mm) Weight: 3.5 lbs (1.6 kg) Frequency Response (+/-3 dB): 95 Hz - 17 kHz Frequency Range (-10 dB): 83 Hz - 19 kHz Nominal Dispersion: 125° conical Sensitivity (SPL / 1 W @ 1 m): 86 dB Maximum SPL @ 1 m: 99 dB (105 dB peak) Nominal Impedance: 16 ohms (transformer bypassed) Recommended Amplifier Power: 16 W RMS / 64 W peak Transformer Taps (70/100V): 1 W, 2 W, 4 W, 8 W, 16 W Transducer: 2.25" (57 mm) full-range driver Input Connectors: Euroblock Environmental: Indoor use only, UL 1480 ULC-S541-listed for use in fire alarm and signaling systems in life safety applications.