QSC AD-S8T-WH 
Features
DMT™ (Directivity Matched Transition) ensures smooth, uniform frequency response over the coverage area
Patent pending X-Mount™ enables the loudspeaker to be easily installed and deployed at a variety of angles without slipping over time
Optional yoke mount and M10 Kit-C eyebolt kit offers additional loudspeaker deployment options
Euroblock connectors allows pre-wiring of the system
Low saturation 70/100V transformers with 8 ohm bypass (S8T and S10T only)
Lightweight ABS enclosures offer long-term durability and lasting good looks
Available in black (RAL 9011) or white (RAL 9010)