There is an opening about 3" left-front side under the car in the splash guard. There is a 3" flexi pipe that connects that opening to the speaker somewhere under the motor. I popped out 3 or 4 plastic pins, cut a piece out of old oil canister and slide that piece between the pipe and splash guard. Better now.
Would you mind posting a picture of where this port is at? I could find any port on the underside of my Clarity and am having a hell of a time figuring out how to get to the speaker.
Different people have different level of hearing. I could hear the "music" (which is hard to call music) up to 50 km/h with closed windows. Starting 2020 Canadian models do not have a button. Starting 2021 the "music" is obligatory in Canada.
The speaker opening is in front of the left front wheel, a bit to the right. If you look up while the car is on the lift you will see it.