A line array is a bunch of speakers that are all lined up in a row. Imagine you have lots of toys, like blocks or Legos, and you stack them all up in a line. That’s kind of what a line array of speakers looks like.
The cool thing about a line array is that it helps people in a big room hear the sound really well. You know how when you’re in a big room, like a gym or a concert hall, it can be hard to hear the person talking or singing on stage? That’s because the sound goes out in all directions, and some of it bounces off the walls and gets mixed up. But with a line array, the speakers all work together to send sound to the people in the room.
It's like how you and your friends might stand in a line to hand out candy on Halloween. Everyone can get a piece of candy because you’re all together in a row, making it easier for everyone to reach the sweets!
So, a line array is a special kind of speaker system that helps people in big rooms hear better so they can enjoy music or a performance.