QSC AD-C821R SYSTEM 
Features
8-inch low-frequency woofer
1.4-inch diaphragm compression driver
200 watt continuous power rating
70V/100V multi-tap transformer included (system can operate in distributed or low-impedance mode)
AD-C821 designed as a fully integrated blind-mount system
AD-C821 is sold in the following system packages:
AD-C821R SYSTEMAD-C821 blind-mount loudspeaker system
Split ring and tile rails
AD-C800RG Round grille (white, paintable)