3C30.21 - Air Horns
To demonstrate how a compression driver works and to demonstrate how the proper coupling to air allows for a more complete transmission of sound.
Connect the momentary contact switch to the power supply and the air hose line to the compressed air output. The smaller of the two horns has the ability to remove the horn coupler to show the difference between no horn and a properly coupled horn.
Make sure the power supply is on. Turn on the air hose. Press the momentary contact switch and hear the horn fire. To show coupling, remove the horn of the smaller air horn and fire it. Then attach the horn back onto the base and fire it again. Hear the differences.