Public address installations can be low impedance, where loudspeaker associations can be found, or 100 V line installations.
The components of a public address system are a signal source, an amplifier and various loudspeakers.
Public address systems must meet criteria for noise level, signal-to-noise ratio, and have a uniform frequency response.
A number of rules must be followed to properly install ceiling, baffle, sphere, column, projector and exponential loudspeakers.
For Fonestar, design means solving the needs and desires of people in a concrete area with increasingly changing and versatile technologies. People, needs, desires and areas that have changed little in ten, a hundred or a thousand years.Â
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