Hi all, Have a horn I'm trying to identify. Unique with it's mounting face and by the 90° bend Notable and maybe identifiable parts: black crinkle paint, threaded throat (1 1/8" id on threads), front flange has two notches on the corners. Came form a junk pile of an avid JBL and Altec collector, but he also had quite a few Klipsch parts laying around. Pictures attached. Any help is appreciated. Thanks, Thomas