OS Horn, Oblate Spheroid with optimized end of profile.

OS if for Oblate Spheroid, the Geddes formula with coverage on demand. This horn is design for free-air usage.

Oblate Spheroid Horn Horn
Oblate Spheroid Horn Horn



OS horn are flexible, as we can choose the coverage angle it can be uses at close to medium range listening distance.

The Bi-Radial or TH-4003-NG will still be better on this point on loading needs.