Thanks for visiting the Fastrac Lascala information page.
The Fastrac Lascala horn lens was developed as a direct replacement for the original Klipsch K-400 lens. The Fastrac Lascala is a Tractrix lens that provides natural sound, more detail, and less distortion than the original exponential K-400 horn.
Round to square adapters are included with Fastrac Lascala. This adapter allows for a plethora 1 inch driver choices.