The loudest speaker in the world

[acoustics101]

http://www.noiseaddicts.com/2008/09/lou ... the-world/
Here is an article about Wyle Lab's WAS3000 modulated air loudspeaker.

You can visualize it as a voice coil driven diaphone. The voice coil drives a slotted cylinder aligned with stationary slots to the throat of a horn. At higher pressures of operation, such as 30 PSI, macrosonic distortion occurs, as air no longer behaves in a linear manner. A sine wave drive to the voice coil results in a sawtooth wave output from the horn. At low operating pressures around 1 PSI the output is similar to the input in that a sine wave input to the voice coil results in a sine wave output to the horn over its operating frequency range.

[Mac]

....Can I put it in my trunk? Would put my 15" 1200wrms sub to shame.

[acoustics101]

The WAS3000 takes gobs of air at moderate pressure in addition to an amplifier. The Army Research Lab uses a 150 HP compressor on their MOAS (mother of all speakers) battlefield simulator (see the huge horn on a long flatbed truck in my previous link). I believe it has a cutoff of 10 Hz. The high output of up to 30,000 acoustical watts, combined with the low cutoff produces the force of a moderate explosion.

....Can I put it in my trunk? Would put my 15" 1200wrms sub to shame.

[german_siren]

how much decibel produce it on 1 watt 1 metre like a normal speaker?