Curvatone Curvatone 700 panels feature holes on the panel faces. The holes can be configured in a variety of spacing styles and patterns. The hole diameter can also be altered to help create a unique panel. Like Curvatone 900, Curvatone 700 can also be made into a concave, convex or serpentine panel shape. If you are looking for acoustical performance and want a creative solution, consider Curvatone 700.