I've been browsing through some pictures online, and I noticed that in some pictures, there's a very small array facing the stage. One on the left, and one on the right. Let's say each of the performers were doing their job, and each singer had an IEM in, what is the main purpose of the tiny array(s) facing the stage then, if the IEM's purpose to block out a lot of exterior noise and assure that the artist can hear him/herself?
Here's an example of what I'm talking about (taken from jblpro.com)
Here's an example of what I'm talking about (taken from jblpro.com)
