Speaker Test
Play conservative left, right or stereo test tones with frequency and volume controls.
How to use this test
Choose a conservative volume and tone frequency, then play Left, Right or Both. Left/right buttons are disabled if the browser cannot provide stereo panning.
How the measurement works
Web Audio creates a short oscillator tone, applies gain and uses StereoPannerNode for channel isolation when supported. Audio starts only after a user action.
How to interpret results
A left test should be heard predominantly from the left channel and a right test from the right. The Both test checks general output but cannot diagnose every speaker-frequency problem.
Troubleshooting tips
Check system balance, output device selection and physical cable orientation. If stereo isolation is unavailable, try another modern browser or use the Both Speakers test.
Related tests
You can also browse every utility from the complete tool index.
Common speaker questions
How do I test left and right speakers separately?
Use the Left and Right controls with a comfortable system volume. If the browser does not support stereo panning, channel-isolation controls are disabled rather than pretending to isolate a side.
Read full answer →Why is sound coming from the wrong speaker?
The physical speakers or headphones may be connected in reverse, the operating system can have channel settings changed, or an audio interface can remap outputs. Compare another audio source to confirm the routing.
Read full answer →What test tone should I use for speakers?
A mid-frequency tone such as 1 kHz is easy to hear on most speakers, while lower and higher tones can reveal range or routing issues. Keep volume conservative, especially with headphones.
Read full answer →Why are the Left and Right buttons disabled?
The browser does not support the Web Audio stereo-panning feature required to isolate channels. The Both Speakers test can still play a centered tone.
Read full answer →