Prime PM-920 | |
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The PM-920 was Prime Manufacturing's copy of the Leslie S-3L.
Externally, the horns can be distinguished by perfectly round contour where the bells meet
the base on the Prime horns, compared to a more complex contour on the Leslie horns, and by
the absence of the Leslie trademark on the manifold. The horn pictured uses the triangular base
that would have been an L-manifold on a Leslie horn; a base similar to the standard Leslie
diamond-shaped manifold was also an option. Horn and photo courtesy Brent Lee. | |
Factory tuning was: B inverted 7th (B,D#,A)
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Prime no longer manufactures locomotive airhorns, but PM-920's can still
be heard on BNSF and Union Pacific, intermixed with their S-3L's. The sound is
essentially indistinguishable from an S-3L.
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PM-920 sound samples:
Courtesy Dave Decker: | |