Frequently asked questions
How do sound waves remove water from a speaker?
A low-frequency tone (around 165 Hz) drives the speaker diaphragm through large, rapid movements. That motion creates enough mechanical force to push trapped water droplets out through the speaker mesh. It's the same acoustic principle behind Apple Watch's Water Lock. You can play these water eject tones in the app.
What frequency works best to eject water?
Frequencies between roughly 150 Hz and 200 Hz are most effective, with 165 Hz a reliable sweet spot for iPhone speakers. Low frequencies move the diaphragm the most, so they expel water best; high frequencies barely move it. Water Remover plays pre-tuned tones in this range so you don't have to guess.
Is this the same as ultrasonic cleaning?
Not quite. Ultrasonic cleaners use very high frequencies in a liquid bath. Speaker water-eject uses audible low frequencies and the speaker's own vibration to push droplets out — no liquid and no submersion. Both rely on vibration, but the mechanism and frequency range are different.
Why does the water eject tone sound like a low buzz or hum?
That deep buzzing is the low-frequency tone doing the work — the lower the pitch, the more the speaker cone moves, and the more force it applies to trapped water. It can sound bubbly or crackly at first as water clears, then smooths out once the speaker is dry.