02 / RESPONSE20 Hz–20 kHz
Frequency sweep
Listen from 20 Hz to 20 kHz for gaps, buzz, or harshness.
Free browser test · no microphone
Online Speaker Test for Left, Right & Stereo Audio
Test left, right, stereo, frequency response, and bass output with short browser tones. Listen for balance, quiet channels, gaps, crackle, or distortion before and after cleaning.
Speaker diagnostics
Start with a channel check
Check stereo balance first, then use the focused tests to find frequency gaps or low-end noise.
Ready4s
01 / STEREO BALANCELeft · right · both
Confirm the tone comes from the expected side before checking frequency response.
Left → right → center sequence
03 / LOW END60 Hz
Low-end check
Play a gentle 60 Hz tone to check bass response and rattle.
04 / BEFORE YOU PLAYQuick setup
- 01Disconnect Bluetooth or headphones.
- 02Use a comfortable listening volume.
- 03Listen for gaps, buzz, or imbalance.
Select a channel or focused test, then start playback.
Professional online speaker test
Check the parts of sound you can hear
Use separate checks to narrow down whether an issue is channel routing, frequency response, or low-end playback.
Left, right, and stereo balance
Compare each side on the same device volume. The stereo sequence makes a missing or quieter channel easier to notice.
Frequency sweep
Move from 20 Hz to 20 kHz and listen for abrupt gaps, buzzing, or harsh sections. Small speakers may not reproduce the full range.
Bass and rattle check
Use the gentle low-end tone to check whether bass sounds unusually weak or a loose grille produces a rattle.
When to run it
When should you test your speakers?
New device setup
Confirm both channels play before you move on to calls, video, or music.
After cleaning or water
Compare the same tones before and after one careful cleaning or water-eject cycle.
Troubleshooting audio
Separate a routing problem from a weak, distorted, or rattling speaker symptom.
External speakers
Run the test through a connected speaker pair to check left/right placement and balance.
How it works
Run a useful speaker test in three steps
Use the same setup for each mode so the comparison is useful.
- Select a testStart with Left, Right, and Stereo, then use Frequency Sweep or Low-end Check for deeper listening.
- Play and listenDisconnect Bluetooth or headphones and use a comfortable volume. Stop if the sound is painful or harsh.
- Compare and diagnoseNote any missing channel, imbalance, gap, crackle, buzz, or distortion before choosing a next step.
Listen for these signals
What to listen for during a speaker test
Clear answers
Phone speaker test FAQ
What does this online speaker test check?
It plays short tones through the left, right, stereo, frequency-sweep, and low-end modes so you can listen for channel balance, gaps, buzz, crackle, or distortion.
Does the speaker test use my microphone?
No. The test only plays audio through your device speakers. It does not request microphone access or upload an audio recording.
What should I do if one side is quiet?
Disconnect Bluetooth audio and headphones, remove any case or film covering the grille, and repeat the left and right tests. If the imbalance remains, follow your device maker's support guidance.
Why can I not hear the frequency sweep or bass tone?
Your phone or browser may limit very high or low frequencies. Set a comfortable volume, disconnect Bluetooth or headphones, and try again. A missing tone does not identify the exact failed component.
Does the speaker test work on mobile?
Yes. It works in modern mobile browsers that support the Web Audio API. Keep the page open, use the device speaker, and avoid switching audio output while a test is playing.
Can the speaker test repair a damaged speaker?
No. It helps you listen for symptoms but cannot repair a damaged driver, corrosion, liquid damage, or blocked internal components.
Need to clear light moisture?