Jean Michel on LeCleac'h horns | Page 40 | diyAudio
1pc Dj Speaker Tweeter Horn 1" Throat Oval Waveguide 90° X 60° For Impact-x15 Professional Audio Hifi Home Theater Car Piezo - Speaker Accessories - AliExpress
18 Sound XT120 horn, for 1 inch compression driver
SRTTU Axial Corrugated Horn Antenna with an Elliptical Tapering Function | Semantic Scholar
DAYTON AUDIO H07E Elliptical Waveguide High Frequencies Ø15.2cm - Audiophonics
Faital Pro LTH102 - Faital Pro LTH102 1" long elliptical tractrix horn. Faital Pro LTH102 elliptical tractrix horns available here at US Speaker.