[br-mi]

PA (Public Address) speakers can be powered in two main ways: through an external amplifier or through an internal amplifier. When powered through an external amplifier, the speaker has a positive and negative set of terminals to connect to the amplifier’s output. The amplifier then boosts the audio signal from the mixer, driving the speaker to produce sound. The second method involves a powered PA speaker, which has a built-in amplifier, eliminating the need for an external one. Powered speakers usually have a line-in connection for the audio signal, an power switch, and a power cord for connecting to a wall outlet. Both methods need a power source, either from a wall outlet, a generator, or a battery, to supply electricity to the amplifier and cause the speaker to produce sound.