Appalachian State University’s Rosen Concert Hall acoustical renovations were recently completed by YCH Architects. This project began with an extensive investigation and study of the acoustical dynamics within the concert hall. And ended with the creation of a dynamic acoustic panel system that was incorporated into the back wall of the stage as well as an acoustic reflector system which was hung from the ceiling. These acoustical modifications will make the hall more acoustically flexible for a broader variety of performances.