Public address system

PA SYSTEM 
This system is used in offices, hotels, condominiums, stations, supermarkets, offices, entertainment ... for the purpose of: background music to create a sense of elegant, comfortable, pleasant, messaging - Notify each region in the case of an emergency. 

PRINCIPLES OF OPERATION 
Signal transmitted from the center via the network cable to each region or all of the speakers in the apartment. 
All the speakers in a play area parallel to each other and define a region then brought to the center. 
The increased use center speaker of selected areas for ease of notification to each needed area. Also the sound increase is likely connected to the peripheral equipment such as Microphone, DVD, tuner, radio or tape recorder.