Could you try to talk with a different person or number to see if it was isolated to one instant or the other persons device?
Ok so that to me sounds like it could be expected by having the volume loud. As long as it wasn't a issue with the hardware or speaker itself.
You are correct, however it wasn't turned up loud at all. Just loud enough to hear them speak. I should be able to have it louder without it distorted, right? I could turn up my One x and not hear the speaker vibrate.
From my newly opened HTC One