Bottom pair of speakers 4 XL

[kmf1]

By accident, while listening to a YouTube music video tonight, I discovered something interesting. I can feel vibrations from the bottom right speaker while the music video is playing, but not the bottom left speaker. I can also feel similar vibrations from the speaker at the top of the phone (ear piece speaker.) The volume level doesn't matter. It seems that the lower left speaker either doesn't send out much sound, or perhaps, mine is damaged. If I cover the bottom right speaker with my finger the sound diminishes. There's no change if I cover the bottom left speaker. Can anyone else confirm this, and/or offer an explanation?

 

[B. Diddy]

The stereo speakers are at the top and bottom of the phone. The other grille you see at the bottom is for the microphone: https://support.google.com/pixelphone/answer/7157629?hl=en

 

[kmf1]

The stereo speakers are at the top and bottom of the phone. The other grille you see at the bottom is for the microphone: https://support.google.com/pixelphone/answer/7157629?hl=en

That makes sense. Mystery solved. Thank you, B. Diddy.