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A sound truck owned by the Republic of China Army A sound truck in Buenos Aires A sound truck in North Korea. A sound truck is a vehicle equipped with a public address system and loudspeakers, typically used to play recorded messages at high volume to the public while driving through residential areas.
A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
In Japan, sound trucks (街宣車, gaisensha) are vehicles equipped with a public address system. They have been used notably in political and commercial contexts, and have one or more loudspeakers which can play a recorded message or recorded music as the truck tours through neighborhoods. In the political world, they are used by parties ...
Federal Signal Safety and Security Systems Group manufactures campus alerting systems, emergency vehicle lighting, emergency sirens, alarm systems, outdoor warning sirens, and public address systems. Currently, the company has 14 manufacturing facilities in 5 different countries. [1]
The company sold radio sets, Amateur radio (Ham) equipment, citizens band (CB) radios and related communications equipment, electronic components, microphones, public address systems, and tools through their company owned and branded chain of retail outlets and by mail-order. [1]
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The Grumman Long Life Vehicle (LLV) is an American light transport truck model designed as a mail truck for the United States Postal Service, which has been its primary user since it first entered service in 1986, 38 years ago.
The R179 cars are equipped with updated control systems, HVAC, and public address systems. They are visually very similar to the R143s and R160s, but the three car types are not interoperable with each other due to electrical incompatibilities between them. [8]