ABSTRACT
\It became inevitable that there would be communication and because of the inherent limitations of the human voice, the sound system came to be. Public addressP.A SYSTEMor "" is an electronic amplific , Amplifier and loudspeakers, used to reinforce a given sound, eg, a person making a speech, pre-recorded music or message and distribution of sound in a place. The voice signal is sent through a microphone which converts sound energy into electrical energy, the electrical energy signal being transmitted is received and amplified by the amplifier circuit. The amplifier'soutputis introduced into the speaker that converts electrical energy back to the original form, but the amplified sound energy. This project consists of the supply unit, pre-amplifiers and power amplifiers, and tone control unit. This system is capable of providing electrical power of 20 W in an 8 ohm load (speaker)
.