Slashdot Mirror

I suppose one of these would be sufficient to cover the whole of the Netherlands: http://www.victorysiren.com/

You know, I once came up with the notion that if you wanted an *incredibly* loud speaker, and had a large budget

I am reminded of this:

What you see pictured above is a Chrysler Air Raid Siren, the most powerful siren in the world. It's the size of a car, measuring near 12-feet in length and standing more than 6-feet tall ... is powered by an 180-HP Chrysler Industrial V-8 HEMI® gasoline engine. The super-duty engine directly drives a three-stage compressor that blows 2,610 cubic feet of air a minute, at nearly 7 PSI, .. out through six giant horns with an exit velocity of 400 miles per hour. The result is an incredibly loud 138 dB sound (measured 100 feet from the siren). The loudness of this siren is unmatched by any other warning device ever sold, ever.

...

The Chrysler Air Raid Siren is so powerful that it can reportedly start fires with just the sound vibrations it produces. It can turn fog into rain, clearing the sky. It can produce an effective 70 dB air raid signal for a distance of two miles, and under proper conditions can be heard 30 to 50 miles away.

or better still, the loudest noisemaker I've ever heard of... http://www.victorysiren.com/x/index.html A noisemaker so loud it apparently starts fires! 138Db 100' from the unit!

Yet another irritating site where random words in an article link to irrelevant ads and Web sites.

I see your folded horn and raise you one flatbed-mounted horn.

I see your flatbed-mounted horn and raise you by the world's largest air raid siren.

"The Chrysler Air Raid Siren is so powerful that it can reportedly start fires with just the sound vibrations it produces. It can turn fog into rain, clearing the sky. It can produce an effective 70 dB air raid signal for a distance of two miles, and under proper conditions can be heard 30 to 50 miles away. Its advertised effective range was four miles in every direction. That's a long way!"

CHOPPED AIR: The world's loudest siren. "We guarantee 138 db at 100 ft. from throat", he said. "Engine is 180 hp Chrysler V-8 industrial. The American Blower Corp. supplied the parts for the compressor and Chrysler machined it. We guarantee 189 db at the throat. We guarantee a radius of 2 miles (4 mile radius in favorable conditions)". Siren weighs 8,000 lbs and costs $5,500.

Quoted from article in THE NEW YORKER, September 20, 1952.

The sales blurb for the "Michaels MX8" says "Now with 5.1, 6.1 and 7.1 Surround sound at 180dB!"

The circa 1950's Chrysler civil defense siren , the world's loudest, peaks at 138dB. It can be heard piercingly at five miles distance. 180dB would be on the order of a small earthquake.

Well I think This would be an apropriate signal to use as a slashdot alarm for your datacenter.