Primos Sonic Dome Singe Turkey Mouth Call. Simple and dependable. You're gonna love the way this call works. The Sonic Dome has been designed so the call is automatically positioned correctly in your mouth. The Dome gives you a consistent distance between the reeds and the roof of the dome, for an inmcredibly consistent sound. The Sonic Dome Series calls uses latex reeds. These calls do it all. Primos Sonic Dome Single Turkey Mouth Call.