Wednesday, March 22, 2006

World's Loudest Road Vehicle?

What is the loudest thing on the streets? I've always thought it was a pulse jet organ car I saw at Burning Man, but this thing here might give it a run for it's money. I'm not exactly sure what the overall purpose of this vehicle is, but it is interesting looking.

The large horn in the front is a Kahlengerg S-6. From the website:
This is the largest air horn in the world. It was built in 1984, the only one of its kind, and won the competition among ship horn manufacturers at the Philadelphia Maritime Museum in 1985. It is 7 feet long, with a 35-inch bell and a 17-inch diaphragm. Weighing in at 267 lbs., it can be heard for 12 miles on land and 25 miles on water, when operating at full pressure (250 psi)
Write in with comments if you've experienced this.


Norwood Matt said...


I'm loving your blog. Regarding horns, I don't think the Kahlengerg S-6 is the biggest. It might be the loudest, but I doubt that also. Biggest that I know of is the Chrysler air raid siren. It was 12 feet long, 6 feet tall, powered by a 180 horsepower V-8, and put out 138 dB (measured 100 feet away).

Almost certainly louder is the WAS 3000 High Intensity Acoustic Source. It produces 163 dB (distance and weighting not given) and produces 30 kW of acoustical energy. That is one rather large amount of acoustical energy. The mouth is eight feet in diameter.

Etin said...

Just a guess, but the Chrysler is a siren, not an air horn. And the WAS 3000? I'm not really sure what you would classify that.

Anonymous said...

Norwood Matt said...

...the lens, the coupler as it were, is a bank of horns. Big mutual-funding horns. They are driven by an air compressor. Ergo, ipso facto, and QED AIR HORN.

Same deal with the WAS 3000. It modulates nitrogen, the major ingredient of "air." Again, its acoustic coupler is a horn lens. Ergo, AIR HORN!

Anonymous said...

Are there any known Chysler air raid sirens in Columbus, OH?