sound compositions broadcast in certain areas, provide pleasing
background music for the auditory enjoyment of the Fair's visitors.
in street lighting luminaires or other suitable accommodations,
at entranceways, along principal promenades, and assembly areas,
are a component part of an extensive sound system.
The speakers are especially
designed to disperse the sound uniformly in a horizontal pattern
of 360 degrees over a relatively large area. With the speakers
placed approximately eighty feet apart, the visitors, are in
effect, surrounded with pleasurable tunes and melodies.
A total of some 550 speakers
are used for the system, each with a power-handling capacity
of 25-watts, and frequency range of from 50 to 15,000 cycles
per second. Most of the speakers are mounted overhead, in the
luminaires, about 21-feet above ground level.