Online Speaker Test

How to use this tool

1. Select Left, Right or Both. Each button plays a short 440 Hz tone in the selected digital channel.
2. Listen at a comfortable volume and report what you heard. Mono playback or accessibility settings can mix the channels.
3. If a side is silent, check system balance and try another connection before drawing conclusions.

Understanding your results

Check system volume, mute, balance and the selected output. Try another app or reconnect the cable/Bluetooth. A missing channel alone does not prove hardware damage.

What this speaker test checks

The test sends a short 440 Hz tone to the selected digital audio channel. Use Left, Right and Both to compare the output. This is useful after connecting speakers, changing a cable or switching to Bluetooth. Your browser uses the output selected by your system; the website cannot confirm which physical speaker actually played.

If the channels do not sound separate

Sound from both sides during a left-only test can come from mono accessibility settings, a device that combines channels, or the output configuration. Check those settings before concluding that the speakers are faulty. If channels seem reversed, check physical labels, cable connections and audio balance. A small phone speaker may not provide the separation of two external speakers.

If you hear no sound

Check system media volume, mute, browser-tab mute and the selected output. Compare with another app at the same volume. If only this browser is affected, review its site audio permissions. If every app is affected, check the connection and operating-system settings. Use the no-sound troubleshooting guide for a structured next step, or the guided headphone test for a step-by-step channel check.