iPhone
Bottom speaker and earpiece are separate. Test in Safari with Silent mode off, and remove a thick case if the bottom grille is covered.
Speaker Test: Left and Right, Bass and Treble
Check whether your left, right, and full-range speakers actually play — then decide if you need to clean, eject water, or look elsewhere.
Updated · 4 sources, checked 7 October 2026
On iPhone, turn the Ring/Silent switch to Ring or the page will stay silent.
Tap a clip to unlock audio. On iPhone, set the Ring/Silent switch to Ring. Start at a moderate volume — the tool already caps peak gain.
READY
Last clip:
Short answer
Play the Left and Right tones and mark which ones you hear. If one side is silent, check the balance setting and turn Bluetooth off, then test again. A channel that stays silent is a speaker or connector fault. A speaker that plays but sounds muffled is usually dust or water, which Speaker Cleaner or Water Eject may clear.
How to use it
- Unplug headphones. If you are testing the device speakers, disconnect headphones, dongles, and Bluetooth audio first.
- Raise volume moderately. Start around 50–70%. On iPhone, also turn the Ring/Silent switch to Ring.
- Play each channel. Run Left, Right, Both, then Bass, Treble, and Sweep. Mark what you heard after each clip.
- Read the result. The tool scores PASS, WARNING, or FAIL from your answers and suggests the next check.
How this speaker test works
The page generates sine tones in your browser, so there is no file to download. The left and right speaker test comes first: the Left clip plays only on the left side and the Right clip only on the right. The steps are the same on a phone, laptop or desktop: Left and Right first, then bass, treble and the sweep. Bass, treble and the sweep check whether the speaker still plays beyond a single midrange beep.
Nothing is uploaded. There is no account. The PASS / WARNING / FAIL card is built from your Heard / Not heard marks — the site cannot hear your room.
What a speaker tester can and cannot tell you
A speaker sound test can show that a channel is silent, swapped, or dull. It cannot measure distortion in a lab sense, and it cannot see water inside a sealed module. If calls are still bad after a PASS, the earpiece, the microphone, or a call setting such as noise reduction may be the real problem.
When to clean instead of replace
Pocket lint and a thin film of moisture are the usual reasons a phone speaker sounds muffled. If Left/Right both play but the midrange is distant, open Speaker Cleaner. If the device was in rain, a pool, or a sink, use Water Eject and let it dry. Not sure whether it is the speaker or the device? Play the same clips through headphones: if they sound right there, the speaker is at fault.
Tips
- Disable Bluetooth if you intend to test the built-in speakers.
- Center the system balance control before you decide one side is dead.
- On laptops, confirm the output device in the OS mixer — browsers follow that choice. If both channels play but sound dull, try a dust sweep with Laptop Speaker Cleaner.
- For a longer balance check than a single tone, alternate pink noise left and right with the Noise Generator.
Common devices
Android / Samsung / Pixel
Many phones have stereo speakers. Run the speaker test left, right, then Both. Phone-maker sound effects can color bass — disable Dolby or “adapt sound” if results seem odd.
Laptop / desktop
Confirm the correct output device in the OS mixer. A Bluetooth headset can steal the test even if the lid speakers look selected.
Tablet / iPad
Landscape vs portrait can change which speaker you hear first. Hold the device as you normally watch video, then run Left/Right.
If something sounds wrong
I hear nothing on one side
Confirm balance is centered in system sound settings. If one channel stays silent after a headphone check, the speaker or cable may be faulty.
Sound is muffled or distant
Lint and moisture often sit in the grille. Try Speaker Cleaner, then Water Eject if the device was wet.
Bass is weak but treble is fine
A blocked port can hide low frequencies. Clean the grille, then re-run Bass and Sweep.
FAQ
How do I do a left right speaker test?
Use the Left and Right buttons. Each tone is panned hard to one channel. Mark Heard or Not heard so the result card can compare both sides.
How do I test speaker sound on a laptop or PC?
Pick the built-in speakers (or the desktop speakers) as the output in the system sound settings, centre the balance, then run Left, Right and Both. The browser plays through whatever device the system has selected.
Why does this speaker tester run in the browser?
The Web Audio API can generate tones locally. Nothing is uploaded, and you do not need an app install to run a speaker sound test.
Can I test my speakers on a phone?
Yes. It works on iPhone and Android browsers. Turn off Silent mode on iOS and make sure media volume — not just ringer volume — is up.
What if both speakers pass but calls still sound bad?
Earpiece and loudspeaker are different hardware on many phones. Try Speaker Cleaner, then test a call with the phone away from a case or screen protector covering the grille.