Leslie made an RSL-4T horn?

If Amtrak stuck with its first custom horn tuning, this is what it would have sounded like. These unique Leslie Supertyphon horns were only ordered on the first SDP40Fs. They found their way onto a Turboliner and F40, but were a short lived sound of Amtrak. This horn came from Leslie before they sold off their line of horns, and is likely the only RS example that left their doors.