Dead End Game Calls Mouth Diaphragm – Signature Series This custom turkey mouth call is designed by Jeff Sipe , two-time NC State Champion Turkey Caller . Built as a three-reed diaphragm , this call requires very little air to run while delivering an impressive range of realistic turkey vocalizations . Featuring one of the most unique cuts in a mouth call today , the bottom two reeds are prophylactic latex , creating an extremely nasally, raspy tone that drives gobblers crazy. From kee-kees and yelps to cutting, clucks, and purrs , this call excels across the entire spectrum of turkey talk. A deadly, easy-blowing diaphragm built for hunters who want something different—and effective—this call is designed to shine when realism matters most this spring.