Left Front Bass Speaker -R21- /Right Front Bass Speaker -R23-, REMOVING AND INSTALLING: Notes
WARNING: This page is about a different car, the 2024 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.
The Left Front Bass Speaker -R21- /Right Front Bass Speaker -R23- -2- are located at the bottom of the front doors.