If playing specialized audio doesn't restore your sound, the problem may be software-based or require manual cleaning: How to Fix JBL Speaker Distorted & Crackling Sound at Home
Take off any protective cases or covers that might block the grill or trap moisture against the device. fix my speaker sound download mp3
Low-frequency sound waves (typically 20 Hz to 200 Hz ) create rapid pressure changes that push water droplets out through the grill. If playing specialized audio doesn't restore your sound,
To get the best results from a speaker-cleaning MP3 or online tool, follow these steps: How to Use Audio to Clean Your Speaker
High-frequency tones (around 1000 Hz ) vibrate the speaker cone at thousands of cycles per second, shaking loose stubborn dirt and lint. How to Use Audio to Clean Your Speaker
When water or dust enters a speaker, it settles on the thin diaphragm or clogs the tiny holes in the grill, dampening vibrations and making audio sound distorted or "underwater".
Place your phone or speaker on a flat surface with the speaker grill facing downward so gravity can help the water or dust escape.