DeviceJig

Speaker Test

Check that your speakers work and are wired the right way round.

Starts quiet. Raise the slider slowly, with your system volume low.

Left channel

Should come from the left only.

You heard:

Right channel

Should come from the right only.

You heard:

Centre

Should seem to come from the middle, between the speakers. This isn't a separate centre speaker.

You heard:

Stereo sweep

Should travel smoothly from left to right.

You heard:

Polarity (phase)

A plays first with both sides in step, then B with one side flipped. A should sound fuller and more centred.

You heard:

Bass sweep

Falls from 200 Hz to 20 Hz. Press the button when you stop hearing it. Stop if anything rattles.

The bars show what the page sends to each side, not what comes out of your device.

Result

Play each test and answer what you heard

The page can confirm which channel it sent. Only you can confirm what came out.

Limits of a browser: what this can't tell you
  • The page knows what it sends. It doesn't use your microphone, so it can't hear what comes out, and the result depends on your answers.
  • Browsers play two channels here. This doesn't test each speaker in a 5.1 or 7.1 system or a separate subwoofer channel.
  • System effects, Dolby Atmos or similar settings, and Bluetooth speakers can change what you hear.
  • The bass number is by ear and depends on volume, room and hearing. It's not a measurement of your speaker.
  • Phone and laptop speakers may be mono or nearly so, which is a design choice rather than a fault.

Play each test, say what you heard, and get a plain result.

How to test your speakers

  1. Turn your system volume low and press Play on Left. Raise it slowly.
  2. Answer what you heard for each test.
  3. Compare left and right: each should come from its own side only.
  4. If one side is silent, follow the fix list in the result.

Fixing one-channel sound and other problems

  • One side silent: check the balance setting first, then the cable at both ends, then try another source.
  • Sides swapped: switch the cables or the speakers' positions.
  • B was fuller: a sign that one speaker's + and - wires may be reversed.
  • Both sides play from one test: usually mono audio turned on, or a device with a single speaker.
  • iPhone: the ring/silent switch can mute web sound.

Common questions

How can I test my speaker?

Play the left and right tests above and answer what you hear. A healthy stereo setup plays each sound from its own side only. The page turns your answers into a result.

How can I test the speaker on my phone?

Open this page on your phone and play the tests at low volume. Many phones play both channels through uneven speakers, or just one, so don't expect a clean left and right.

Is there an app that can test my speakers?

You don't need one. This page plays its own test sounds, so there's nothing to install.

Why is sound only coming from one speaker?

The most common causes are the balance setting, a loose or faulty cable, or a mono audio setting. Work through the list in the result. If headphones work on both sides, the built-in speaker may be at fault.

Related tests

Privacy

Any page counting is cookie-free; see the privacy page. Results stay in this browser and join your device report.

Technical reference, read 2026-11-01: MDN: AudioContext.outputLatency.

iPhone is a trademark of Apple Inc. Dolby Atmos is a trademark of Dolby Laboratories. Bluetooth is a trademark of Bluetooth SIG, Inc. DeviceJig is independent and is not affiliated with these companies.

All 11 tests, by device

Find your device, pick the numbered part you want to check.

Screen

Mouse

Keyboard

Controller

Speakers

Headphones