Speaker Test

Send a short pulsing tone to one side at a time. If the sound comes from the wrong side, or one side is silent, you know where to look.

Lower your volume before starting, especially with headphones. Nothing plays until you press a button.

Stopped

Runs entirely in your browser. Nothing is uploaded or stored.

How to use

  1. Turn your volume down to a comfortable level before you start.
  2. Press Left. The tone should come only from the left speaker or earpiece.
  3. Press Right and check the other side. Then press Both.
  4. Use Auto to cycle through all three while you listen.

What this test can detect

  • A speaker or earpiece that is silent.
  • Channels that are swapped, for example when a cable or setting is reversed.
  • A tone that sounds distorted or crackly on one side.
  • Balance settings that make one side much quieter.

Important

  • Some laptops and phones have a single speaker or mix both channels together. In that case Left and Right will sound the same.
  • Bluetooth devices sometimes add a short delay before the sound starts.
  • This test uses a synthesized tone. It does not check the full frequency response of the speaker.