Judging whether cleaning worked is genuinely difficult, because memory of how something sounded is unreliable in both directions. A fixed reference solves it.
For a complete overview, see our full guide: Eject water from a phone speaker.
Why your memory is not a reliable instrument
After spending ten minutes cleaning, you want it to have worked — and expectation shapes
perception considerably. The opposite also happens: gradual improvement across several cycles is easy
to miss because each step is small. Neither error is avoidable by concentrating harder.
Record a reference before you start
Record a fifteen-second voice memo — your own voice, reading anything — before the first cycle.
Play it back through the affected speaker at a fixed volume after each stage. Because the file never
changes, any difference you hear is real. This single habit makes the whole process measurable.
Use speech, not music
A bass-heavy track masks exactly the mid and high frequency dullness that indicates remaining
blockage, and a familiar song biases what you think you hear. Consonants are the giveaway: if s, t
and f sounds are soft or smeared, something is still in the mesh.
The high-tone test
A 10 kHz tone is useless for cleaning but excellent for measuring, because high frequencies
are attenuated most by mesh obstruction. Play one before and after. A blocked speaker renders it thin
and distant; a clear one renders it sharp and present. The difference is more obvious than with any
music.
Compare against the other speaker
If your device has two, the unaffected one is a built-in reference. Play the same file through
each and listen for the difference in brightness and volume. If they now match, you are done. If one
is still duller, there is more to remove.
Signs something remains
- Volume recovered but treble still dull — material still in the mesh openings.
- Treble recovered but bass still thin — the diaphragm has not regained full travel.
- Sound good at low volume, poor at high — that pattern suggests a mechanical fault rather than
blockage.
When to accept partial recovery
If two consecutive cycles produce no further change, you have reached what home methods reach.
The remainder is usually bonded material, and pursuing it with sharp tools or compressed air makes
things permanently worse rather than better.