| The American City - June 1952 | |
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This article clipping courtesy of Harry Barry. Chrysler Sirens Tested In Detroit, Mich.
A TEST of air-raid sirens in Detroit on March 28, 1952, was described as "the loudest noise ever devised by man for a sustained output by mechanical means." Powered by Chrysler's new Industrial V-8 180-hp engine, the test was conducted from sirens on the Sheraton-Cadillac Hotel, the General Motors Building, and Chrysler Jefferson plant. It was the first simultaneous test of the equipment to take place in Detroit. Sound engineers stationed midway between the two giant sirens reported that 16 to 20 decibels over normal traffic noise were recorded. Interviews conducted along a busy street at the location revealed that listeners had no difficulty distinctly hearing the test from the interior of buildings. A new three-stage-type air compressor perfected by Chrysler engineers in cooperation with American Blower Corporation, of Detroit, is the primary factor in producing the additional sound of the new unit. It forces air into a battery or-six horns at a speed in excess of 400 miles per hour. The siren may be operated either by remote control from a centrally located point, or by mechanical operation at its location site. It is available to the Federal Government, to municipalities, and to private enterprise. The Marine and Industrial Engine Division of Chrysler Corporation produced hundreds of air-raid warning devises for both military and civilian protection during World War II. |
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