QSC AC-C4T-nb Acoustic Coverage Series “no back can” models (nb) are full-range 4.5 and 8 inch ceiling-mounted loudspeakers. Each comes with a 70/100V transformer and is suitable for a wide variety of audio/ video conferencing reinforcement. And it used voice paging and background music applications.
Rated noise power [rms]: 6 W
Effective frequency range: 62 Hz – 18 kHz
Rated Coverage: 140° conical
Product dimensions (Diameter x Height): Ø 206 x 95 mm (Ø 8.11 x 3.75-inch)