What does a blown phone speaker sound like?

A blown phone speaker typically sounds distorted, buzzy or crackly at any volume, has severely reduced bass output, may sound like the audio is coming through a torn paper cone, and may cut out completely. Run our distortion test to confirm. Note that a speaker can sound 'blown' but actually just be clogged with dust or water, which our cleaning tools can fix.

What frequency should a phone speaker test use?

A complete phone speaker test should cover: 60–120Hz for bass response, 500–2000Hz for mid-range clarity, 4000–8000Hz for treble/high-frequency response, and a white noise or pink noise test for overall frequency balance. Our 7-test suite uses 60Hz (bass), 250Hz (low-mid), 1kHz (mid), 4kHz (upper-mid), 8kHz (treble), white noise (full range), and a sweep test.

Speaker Test Suite · Free Online

CHECK YOUR
SPEAKER
ONLINE

Run a 7-point speaker test on your iPhone or Android right now. Tests bass, mid-range, treble, channel balance and distortion. Get a health score and know exactly what’s wrong — in under 3 minutes. No app. No signup. Free forever.

Left channel

-40-20-10-30

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Right channel

-40-20-10-30

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Output level

LOWMIDMAX

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✓ iPhone ✓ Android ✓ 7 tests ✓ No app ✓ Free

SPEAKER TEST SUITE

SCORE —/7

7/7

Speaker is healthy

All tests passed

ready — press run all tests to begin

Test guide

What each test checks

60 Hz · Bass

Deep bass response

Checks if your speaker can reproduce low frequencies. Phones with small speakers naturally have limited bass, but you should still hear and feel a rumble. Absence suggests physical damage or heavy blockage.

PASS: You hear/feel a low rumble

FAIL: No sound or thin buzz only

250 Hz · Low-mid

Low-mid warmth

Tests the lower mid-range where voice warmth and body live. A muffled or absent 250Hz tone usually means dust or debris is damping the speaker cone — a cleaning issue, not hardware damage.

PASS: Clear, warm tone

FAIL: Muffled, quiet or absent

1 kHz · Mid

Mid-range clarity

The most important frequency for voice calls and music. Should be clear and present at moderate volume. Distortion at 1kHz with no physical damage often indicates water inside the speaker grille.

PASS: Clear, undistorted tone

FAIL: Crackly, distorted or weak

4 kHz · Upper-mid

Upper-mid presence

Upper mids carry consonants in speech and attack in music. A weak 4kHz response makes voices sound dull. This frequency is sensitive to partial cone damage from physical drops.

PASS: Bright, present tone

FAIL: Weak or harsh/tinny

8 kHz · Treble

Treble/high frequency

High frequencies are the first to degrade from physical wear. You should hear a clear, sharp tone. Absence usually means the tweeter element is damaged. Distortion here often follows drops.

PASS: Sharp, clear high tone

FAIL: Absent, harsh or distorted

White noise · Full range

Full spectrum balance

White noise contains all frequencies equally. Listen for a “shh” sound that’s balanced. If certain frequency bands jump out as too loud or too quiet, the speaker has uneven frequency response — usually from damage.

PASS: Balanced “shh” hiss

FAIL: Uneven, tonal, or missing bands

Sweep · Distortion

Distortion detection

A rising frequency sweep. Listen for any rattling, buzzing or cracking — especially in the 200–400Hz range. Consistent buzz at any volume = blown speaker. Buzz only at high volume = normal cone flex.

PASS: Clean sweep, no buzz

FAIL: Rattle, buzz or crack heard

Result guide

What your score means

6–7 / 7

Healthy speaker

Your speaker hardware is in good condition. Any minor quality degradation can be solved with regular cleaning maintenance.

Run Dust Sweep monthly to prevent buildup

Water Eject after any liquid exposure

Re-test every 3 months

3–5 / 7

Needs cleaning

Multiple tests failing at once usually indicates dust or moisture blockage — not hardware damage. Cleaning resolves most cases in this range.

Run Deep Clean (dust-cleaner page) 3× now

If wet: use Water Eject tool first

Re-test after cleaning — score should jump

If score stays low after cleaning: hardware issue

0–2 / 7

Likely damaged

A very low score, especially if distortion and bass tests both fail, suggests physical hardware damage to the speaker cone or voice coil.

Try Deep Clean and Water Eject first — some “damage” is just severe blockage

If no improvement: seek professional repair

Find a local car stereo / audio shop using our directory

FAQ

Speaker test questions

Open this speaker test page on your phone, set volume to 70–80%, and run the 7-test suite. Each test plays a specific tone and tells you what to listen for. If a tone sounds distorted, muffled, or absent, that test fails. The tool gives you a health score and recommended action for any failed tests.

A blown phone speaker typically sounds distorted, buzzy or crackly at any volume, has severely reduced bass output, may cut out completely at higher volumes, and produces a rattling sound especially in the 200–500Hz range. Run our distortion sweep test to confirm. Note that a speaker can sound identical to a blown speaker but actually just be clogged with dust or water — which our cleaning tools can fix for free.

A complete phone speaker test should cover: 60–120Hz for bass response, 250–500Hz for low-mid warmth, 500–2000Hz for mid-range clarity, 4000–8000Hz for treble and high-frequency response, and a full-spectrum noise test for overall balance. Our 7-test suite uses 60Hz, 250Hz, 1kHz, 4kHz, 8kHz, white noise, and a 100–4000Hz distortion sweep — covering all critical diagnostic points.

Yes. Our speaker test runs entirely in your phone’s web browser — Safari, Chrome, or Firefox. No app installation required. Simply open myspeakerrepair.com/speaker-test/ on any phone and run the tests. The Web Audio API used by this tool is supported on all modern browsers.

Not necessarily. Many speaker test failures are caused by dust or water blockage rather than physical hardware damage. Before assuming your speaker is broken, try our free cleaning tools: the Dust Cleaner page for muffled or low-volume results, and the Water Eject tool if the phone was recently exposed to moisture. Most failed tests can be resolved by cleaning alone — run all cleaning tools, then re-test.

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