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A Public Address (PA) system, also known as a sound system, is typically wired as follows:

1. Power Supplies: The PA system requires a power supply to operate. This is often connected to a mains power outlet.

2. Amplifier: The amplifier increases the volume of the signal from the mixer. It has input connectors for the signal from the mixer and output connectors for the speakers.

3. Mixer: The mixer is used to balance the levels of different audio sources, such as microphones, CD players, or laptops. It has input connectors for these sources and output connectors for the amplifier.

4. Speakers: The speakers convert the electrical signal from the amplifier back into sound. They are connected to the amplifier’s output.

5. Microphones: The microphones convert sound waves into electrical signals that can be processed by the PA system