Two Rivers engineers restore the voice of Titanic

Established in 1895 as Kahlenberg Brothers Company, Kahlenberg Industries, Inc. of Two Rivers is a leading manufacturer of sound signaling products, primarily pneumatic air and electric horns for marine, industrial, and mass notification use.

Kahlenberg electric piston horns are used on U.S. Navy aircraft carriers. The company builds programmable musical air horns for superyachts, and evacuation horns used in Middle Eastern oil refineries. Kahlenberg horns are blasted from atop sports arenas and stadiums.

In 1998, Kahlenberg was called upon to refurbish the whistles of RMS Titanic, last sounded on April 15, 1912. The instruments had been recovered in 1987 from a field of debris 2 1/2 miles below the ocean's surface.

See the engineering feat recounted, including the tale of transporting the priceless whistles in a panel van through a snow storm.