Start at a comfortable volume. A short tone plays through the selected channel; your hearing confirms the result.
YOUR RESULT → YOUR NEXT STEP
What does my result mean?
Choose what you observed. These explanations help you narrow down a problem; they are not an automatic hardware diagnosis.
I hear the tone in the intended channel
What it means
Playback reached an audible output path. This does not measure frequency response or certify speaker quality.
What to do next
At a comfortable low volume, compare Left, Right and Both using headphones or a stereo output. Stop playback before changing devices.
There is no sound
What it means
The system may be using a different output, a muted browser or disconnected headphones.
What to do next
Check the selected output and system volume, then test ordinary audio in another app. Start quietly; do not compensate by immediately raising the volume to maximum.
Left and Right sound the same, or stereo is unavailable
What it means
Mono audio, routing, the connected device or missing browser stereo support may explain this.
What to do next
Check the system’s mono-audio setting and try stereo headphones. If the page reports stereo unavailable, use Both or another compatible browser; do not interpret the fallback as a failed speaker.
QUICK START
How to use the speaker test
Connect your speakers or headphones and select the correct system audio output.
Choose Test Left, Test Right or Test Both.
Listen for the tone in the expected channel and adjust the test volume if needed.
READ YOUR RESULTS
Understanding your results
The page generates a short tone locally and routes it to the selected stereo channel where the browser supports stereo panning. It uses the audio output chosen by your system or browser.
Mono audio settings, Bluetooth profiles and speaker wiring can affect which channel you hear. Hearing a tone confirms this signal path, but it does not measure frequency response, distortion or overall sound quality.
Troubleshooting your speaker test
The left test plays on both sides
Check whether mono audio is enabled in accessibility settings, then check the output device and connection profile. Stereo channel routing must also be supported by the browser.
No tone is audible
Start at a low, comfortable system volume. Check the selected output, tab mute state and test volume. Try Both. The page cannot listen to your speakers or confirm sound quality automatically.
Still stuck? Report a test problem. Do not include recordings or private device information.
Frequently asked questions
Why do I hear both sides during a single-channel test?
Check whether mono audio is enabled in system accessibility settings. Some output devices or connection profiles combine stereo channels.
Why is there no sound?
Check system volume, the selected output device and whether the browser tab is muted. Try Test Both before investigating a channel-specific issue.