Speaker test
Check that both speakers work, that left and right are not swapped, and how low and high your speakers can go.
Pick a test to start.
How to test your speakers
Turn the volume up to a comfortable level and press a test. Left and Right should only come from one side, Both from the middle. Bass shows how deep your speakers go, and Sweep slides from the lowest to the highest note so you can hear where the sound starts and stops. Headphones work best for checking left and right.
What the results mean
Left and right are swapped
Check how the speakers or headphones are connected, or the balance setting of your device.
Sound only on one side
One speaker may be blocked, wet or damaged. Many phones also have only one real speaker at the bottom.
Bass is weak or rattles
Small speakers cannot play very low notes. Rattling can mean water, dust or a loose part.
The sweep goes quiet early
Most people stop hearing high notes somewhere between 14,000 and 18,000 Hz. That is normal and depends on age.
Questions people ask
Why do Left and Right sound the same on my phone?
Many phones have only one loudspeaker, or mix both channels together. Use headphones to check left and right properly.
Can this test find water in my speaker?
Yes. A crackling or muffled sound in Bass or Sweep often means water or dust. Run Water Ejector, then test again.
Is the sweep safe for my speakers?
Yes, at a normal volume. Keep the volume moderate for the highest and lowest notes.
Do I need to install anything?
No. The test runs in your browser on phones, tablets and computers.