High Efficiency Speaker Asylum: Tractrix vs. hypex vs. conical - corrected (long with pictures) by Volvotreter
Tamás Görbe on Twitter: "Fun fact about the tractrix: It is used in making horn loudspeakers. In fact, a horn with tractrix shaped contour minimizes distortion caused by internal reflection of sound
TRACTRIX-110 – Horns by Auto-Tech
Tractrix Poly Horn | Kabelloser Hornlautsprecher
TRACTRIX hORNS – GPoint Audio
Tractrix midrange horn (Pt I) | D a r k L a n t e r n
TRACTRIX-600 – Horns by Auto-Tech
Stereolabs stone horns (4), 250Hz and 1,000Hz, plus Selenium drivers | Stereo, Home Cinema, Headphones Components
voigt-pa: The Voigt " Tractrix " Loudspeaker Horn. | Radiomuseum