The video is a few months old, but I only stumbled upon it today. It's about how live venues got better once they adopted line array speakers, improving sound quality while reducing staging cost and complexity.

https://youtu.be/8c-gD4mwI8A?list=PLMhxZS3AJWdCeLJa1jrZyFuwqwGN0g_cR

I remember being at Stone Mountain in Georgia about 8 years ago, sitting about a quarter mile away from the two loudspeaker tower arrays. There was nothing below 40 Hz, but I was amazed at how good it sounded.

Author of "Status 101: How To Keep Up In A World That Keeps Score While Buying Into Buying Less"