primed and painted

sealed diaphragm

(3.5 to 10.5 kg/sq cm)

The KM Series horns are the finest and most reliable air horns on

the market for very large area coverage. They were developed and

proven to meet the most exacting demands of the industrial and

commercial trades.

The horns generate sound by means of a vibrating diaphragm that

modulates the flow of compressed air into a resonating projector.

All horn shapes are mathematically calculated to amplify sound

while closely retaining its fundamental frequency and natural harmonics.

The signal is designed so that moisture naturally drains away from

the diaphragm seat.

Designed for mounting on air supply piping, supplying between 50

and 150 PSIG (3.5 and 10.5 kg/sq cm).

Excellent for pole or roof top installation. Particularly useful for

commanding attention to emergency situations in very large areas.

* Subject to environmental and geographical conditions, these models have a typical effective range of 1 1/4 mile (2 km) assuming an ambient background level of 60dB, a

line pressure of 100 psi (7.03 kg/sq cm) and temperature of 60°F (15.6°C). Derated per FEMA guidelines @ 10 dB per distance doubled.