Stereo speaker test
Find your left. Hear your right. Check your speakers or headphones, one channel at a time.
Start with low device volume. Select a channel, then play the test tone.
Test tone
What this guide helps you check
Check whether a browser-generated tone reaches the selected output and whether left/right balance behaves as expected. This is playback troubleshooting, not a hearing test.
Before you start
Select the intended system output. Use a quiet, comfortable volume; begin lower with headphones. Keep the tab unmuted and avoid increasing volume to force inaudible frequencies to be heard.
Testing & Diagnostic Procedure
Free to use.
- Choose the intended speakers or headphones in your system sound settings. Begin with low system and test volume, especially with headphones.
- Start playback, then select left, right and stereo in turn. The channel controls change the balance; selecting a channel alone does not start sound.
- If the channels sound identical, check mono audio and balance settings before trying another output or a wired connection.
- Change frequency manually only if useful, keep the volume comfortable, and stop playback when finished. Do not turn up an inaudible tone.
Good to know
Why is there no sound even though the test is playing?
Check tab and system mute, test volume and the selected system output. Sound may be routed to a display or headset. Stop and restart after changing outputs, then compare another app if needed.
Does this speaker test need microphone access?
No. It generates a tone for playback and does not listen to your speakers. Microphone permission belongs to the separate microphone test.
Why do I hear the left test in both ears?
Mono audio, output processing or the connected device may combine channels. Check mono and balance settings and compare a known stereo output; this result alone does not prove a wiring fault.
Does an inaudible tone mean my speakers are broken?
No. The output device, settings and your hearing can all limit audibility. Do not raise the volume to force a tone to become audible. Compare ordinary audio at a comfortable level instead.
No sound: check the output path first
Start playback with the test button. Check whether the browser tab, browser app, system output or physical device is muted. A connected display, USB interface or Bluetooth headset may be receiving the sound instead of the speakers you intended.
Select the output in the operating system, then stop and restart the test. This page has no output-device picker and does not need microphone permission. If playback still fails, compare with familiar audio in another app and try another browser. Settings names and locations vary by browser and device.
Left and right sound the same, swapped or uneven
Mono audio can combine both channels, and a single speaker may not reproduce stereo separation. For a stereo comparison, check system mono and balance settings, the test balance control, cable connections and the left/right placement of headphones or speakers.
Stereo here sends the same test tone to both sides; it is not two different recordings. Room reflections, fit and audio processing can affect what you hear. Compare at the same modest volume with another headset or output before suspecting a physical fault.
Bluetooth quality changes and dropouts
Some Bluetooth setups change audio mode when an app uses the headset microphone, reducing playback quality. Stop microphone use in other apps and compare again; behavior depends on the device and operating system.
For interruptions or delayed sound, check the connection, move closer to the device and compare with a wired output if available. A different result helps narrow the connection path, but does not identify a defective component.
Use tones cautiously, not as a hearing or calibration test
The frequency slider selects one tone at a time between 20 and 20,000 Hz. It does not run an automatic sweep or measure a frequency-response curve. Speaker capability, playback processing and hearing all affect whether a tone is audible.
The volume percentage is a control setting, not a calibrated sound-pressure reading. Keep tests brief and comfortable; stop if a tone is unpleasant. Do not increase volume to chase very low or high tones. For buzzing, lower the level and compare another source rather than treating the noise as proof of damage.
What this test can and cannot tell you
- This is a browser playback check, not certification of speaker condition, hearing ability or calibrated acoustic response.
- The page cannot measure sound pressure (dB SPL), physical output latency or whether sound actually reached your ears.
- The speaker test does not record or upload audio. Separate site services, including advertising, may make network requests.
Interpretation example (illustrative)
Illustrative example: left and right selections both heard in both ears invite checking mono audio and output processing. After disabling mono if appropriate, compare again at the same low volume before concluding there is a cable fault.