HAHAA - I love it! … I’ve tried placing all sorts of modules before the speaker to try and absorb the servo noise, but no luck. I’m grasping at straws here, but what if you put a threshold before it? I can’t test this theory, myself. In any case, I don’t notice your speaker noise because the servo itself is noisy.
No noise with the 022 speaker on my end.
Good luck troubleshooting & I can’t wait to see the whole sha-bang!