What you're looking at is a patented Wave Guide Technology design. I know it looks like a hand print, but it is actually designed using a proprietary algorithm so the audio is dispersed in such a way to avoid listener fatigue. The model in the picture is designed for use as a Left Front or Right Surround. They are very expensive because they are hand made.
Fins: Still Slamming' His Trunk on pilgrim's Small Weenie - One Trunk at a Time!