These are the part numbers for the door's tweeters
You can see the reference of the center speaker in the third pic.
This mod makes a lot of difference in terms of quality and volume of sound
Thank you very very much for your post, without your post I almost messed up the trim of my X1 2016 , because in all the you tube panel removal process, you have to pry the trim above the door handle. With your pictures everything went smoothly. Thanks again. Now I don't want to get out of the car because of the sound of music that is so different from the base speakers. Also thanks to Bavsound.
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