Currently megaphone mode works great in terms of standardizing volume regardless of the avatars position. But, when you rotate it is honoring panning and therefore you get a strange sound artifact that is due to the rotation of the avatar. Please add an option to have megaphone mode not honor panning. In other words, you hear the volume in a standard manner and the voice is panned to the center and it would eliminate this artifact. It should be an option because some people may want to maintain the panning.
The following shows this weird effect as I have the listener (an avatar who is on a platform that rotates) and you can hear the artifact around the 1 minute mark of the video. https://www.youtube.com/watch?v=_59PtAP593Q