UtilityBaseDevice Tests
Speaker Test
Play left, right, and stereo tones to verify your speakers and headphones.
Updated January 18, 2026
How to use the speaker test
- 1Set the volume slider low, especially when wearing headphones.
- 2Press Left — you should hear the tone only in the left speaker.
- 3Press Right, then Stereo, to verify the other channel and both together.
- 4Adjust the frequency slider to test bass and treble response.
- 5Press Stop to end playback.
Common uses
- Verify left/right channels after connecting new headphones.
- Check that both speakers work on a laptop or monitor.
- Test frequency response with the tone generator.
Frequently asked questions
The left and right channels are swapped. How do I fix it?
First confirm your headphones or speakers are physically oriented correctly (the L/R markings). If they are, check your operating system's audio settings or your audio interface software for a channel-swap or balance option.
What frequency should I use to test?
440 Hz (the default) is comfortable and audible on any speaker. Sweep lower (60–120 Hz) to check bass response and higher (8–15 kHz) to check treble — small laptop speakers naturally reproduce little below ~200 Hz.
Why is there no sound at all?
Check the output device selected in your OS (audio may be routed to a display or Bluetooth device), the system volume and mute state, and the volume slider in the tool. Browsers also require a click before playing audio — press one of the test buttons.
Is a loud test tone dangerous for headphones?
Sustained loud tones are unpleasant and can be harmful to hearing at high volumes. Start with the tool's volume low, especially with in-ear headphones, and raise it gradually.
About this tool
The speaker test plays tones through the left channel, right channel, or both, so you can confirm each speaker works and that your channels aren't swapped — a common issue after plugging in headphones or configuring a new audio device. A tone generator with adjustable frequency helps check the range your speakers reproduce, and a volume control keeps things comfortable. Audio is synthesized locally with the Web Audio API; nothing is downloaded or transmitted. Start at a low volume, especially with headphones.
Like everything on UtilityBase, the speaker test runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more device tests here.
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