Test My Speaker

Left Right Speaker Test Online

Check whether your left and right speakers (or headphones) are wired and balanced correctly. Free, private, and runs entirely in the browser—no download, no microphone.

Start left-right testFree · No install · Private Web Audio

Speaker test console

Generated locally with the Web Audio API

Signal

Idle

Lower your system volume before starting. Stop immediately if the sound feels uncomfortable.

1Lower system volume
2Choose a channel or mode
3Listen and confirm

Speaker channels

440 Hz
440Hz
Idle

Test modes

What to listen for

Choose a channel or test mode. A clear, steady signal should match the control you selected.

Did you hear it?

Your response is informational only; the site does not diagnose speaker hardware.

How to use

How to test left and right speakers

Lower your system volume first, then open the test console below. Tap Left to send a tone only to the left channel, Right for the right channel, or Both for a combined check.

If you only hear one side, check cable seating, Bluetooth pairing, OS output device selection, and whether the speakers are physically swapped. On phones with a single bottom speaker, true stereo separation may be limited.

This page targets queries like “online left right speaker test” and “left right sound test” with a dedicated URL, title, and channel-first UI so you can deep-link the exact check you need.

  • Wear headphones with L/R markings facing the correct ears before judging balance.
  • Bluetooth can add a short delay—that is normal and not a channel fault.
  • Start quiet; raise volume only if the tone is hard to hear.

More speaker tests

Stereo balance testHeadphone testBass & frequency testFull speaker test home

Left-right FAQ

Common left and right channel questions

How do I know if my left speaker is working?

Play the Left test at a low volume. You should hear a tone only from the left output. If not, verify the device is selected as the system output and that cables or wireless pairing are correct.

Why does the right channel sound quieter?

Balance sliders, damaged drivers, uneven placement, or mono downmix can make one side quieter. Compare Left and Right tests at the same volume, then check OS balance settings.

Can I test left and right on a phone?

Yes, especially with wired or Bluetooth headphones. Built-in phone speakers may not fully separate channels depending on hardware layout.

Is this left right speaker test free?

Yes. The tones are generated locally with the Web Audio API. Nothing is uploaded and no app install is required.