The mike will do it for you, right? Wrong.
Have you ever turned up late for someone else's speech? You can hear the sound of the speech (not the individual words) through the closed doors. Within five seconds, you know if the speech is likely to be boring when you go in and find a seat.
Make? As in compel? Yes, it's not an exaggeration - you can make them want to listen and they won't know why. They'll just think you're a great presenter.
Here's how.