Moto G7 Receiver Distorted Audio

Moto G7, Model XT1962-1, out of warranty. The receiver (earpiece speaker) produces buzzy, distorted audio. The loudspeaker (speakerphone) is fine. I have run Motorola diagnostics. verified that the issue exists in safe mode, and done a factory reset (which solved some other issues, thankfully). I’m certain at this point the the receiver speaker is faulty, but have not been able to find the component in the United States. I believe the Motorola part number is SR78C33892. Does anyone have any suggestions/comments? Thank you!