The SuperTyfon horns first appeared in 1951 as a replacement for the failed Chime-Tone series of multi note horns. When the SuperTyfon horns first came out, they were still called Chime-Tone horns which eventually evolved into "chime whistles". Note that Leslie has always called their horns "whistles".
The SuperTyfon line was introduced in 1951 with the S3J and S5D. These horns sounded the same chords as the M3 and M5 offered by AirChime at the time (A-major triad and A-major 7th). Just after these were announced, Leslie added the S3E and S5A to their offerings.
In late 1952, Leslie dropped all other models in favor of their SuperTyfon line. These S3L and S5T models changed Leslie’s sound from then until the end of time.
In order to create a unique sound, Leslie took an unconventional approach in creating their horns to play chords that were slightly off-key. The theory was that an off-key, less pleasing chord would be more effective as a warning device.
In November of 2021, HornBlasters acquired the assets to the Leslie SuperTyfon line. Moving forward, HornBlasters will carry the legacy of the Leslie SuperTyfon line from 2021 and beyond. HornBlasters is committed to preserving the Leslie legacy and will continue to manufacture the SuperTyfon line for many years to come.