Thumbs down [Q] Two broken speakers on different M8's in two days. Have you heard of it?

I got my first M8 monday. After an hour I noticed a weird clicking sound when I pressed on the circle with 4 dots in the camera app. It sounded like broken plastic was being crunched. On tuesday I went back with it, got a new one and today that one started making that sound.
I called HTC support, but they said they haven't heard of it and asked me to do a hardware check within HTC Guide and found that it was the left speaker that was broken. The output levels were the same as the right ones, but you could barely hear anything from the left one.

You guys heard of this? I don't want a third one breaking on me in 2 weeks (then it have to get repaired hardware).