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Speaker Test
Verify left, right, and stereo output with guided test tones.
Left plays 440 Hz on the left channel only. Right plays 523 Hz on the right channel only. Stereo sends both tones together.
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Why test your speakers
New headphones, desk monitors, and home theater setups sometimes have reversed channels, bad cables, or OS balance issues. A quick left/right check prevents mixing mistakes and catches hardware faults early.
How to run the test
Click Test Left — sound should come from the left side only. Repeat for Right. Test Stereo sends equal signal to both channels. Use Stop between tests in quiet environments.
Troubleshooting
If channels seem wrong, check physical wiring, Bluetooth mono mode, and operating system balance sliders. Try our 1000 Hz tone for a brighter reference or Stereo Test for a focused L/R walkthrough.
How to use
Adjust settings
Use sliders and controls to set frequency, volume, and waveform. Changes apply in real time.
Export or share
Download a WAV file or copy a share link. All processing stays on your device.
Frequently asked questions
How do I test if my left speaker works?
Click Test Left — audio routes to the left channel only.