Speaker Test

Test speakers or headphones online with left, center, and right channel checks. Choose a test sound, sweep low-to-high frequencies, and record which tones you can hear.

Tones are generated in this browser tab

Lower your volume before you start. Pure tones can be uncomfortably loud, especially through headphones.

Left and right channel check

Choose a sound, then switch channels without losing that selection.

Test sound

Changing this while a channel is playing keeps that channel active.

Frequency sweep

Play each tone and mark whether you can hear it. 0 of 7 marked as heard.

Sub bass60 Hz
Felt more than heard. Many laptop and phone speakers cannot reproduce this.
Bass150 Hz
Low end of male speech and the body of most music.
Low mid400 Hz
Warmth of voices and instruments.
Midrange1 kHz
The reference tone. Everything audible should reproduce this clearly.
Upper mid4 kHz
Speech clarity and consonants. The ear is most sensitive here.
Treble10 kHz
Air and detail. Harder to hear with age-related hearing loss.
High treble15 kHz
Often inaudible over about 40 years of age, and beyond many small speakers.

Complete tool guide

Speaker Test guide

Use this online speaker and headphone test to find a silent or swapped stereo channel, confirm the active audio output, and explore the audible frequency range of your device.

Your input is processed in the current browser tab and is not sent to the application server.

Why use this tool?

Check left and right audio channels independently with a predictable signal.
Compare speakers, earbuds, headphones, and system outputs without uploading audio.
Work through a guided frequency sweep and mark each result as you go.

Common use cases

Checking new headphones or speakers for a dead channel
Confirming left and right are not wired or configured the wrong way round
Finding out where a small laptop or phone speaker rolls off

How to use it

1
Set your system volume to a comfortable, moderate level.
2
Play the left, centre, and right channel checks and confirm each comes from the expected side.
3
Work down the frequency sweep and mark which tones you can hear.
4
Stop the tone when you are finished.

Controls and results explained

Test sound menu

Choose the sound used for the channel check. Each option includes its frequency, so you can use a comfortable midrange tone or another available signal before testing left and right routing.

Left channel

Plays only through the left side of a stereo output. If you hear it on the right, check cable connections, system balance, Bluetooth channel mapping, or interface routing.

Center / both channels

Plays the same signal through both sides. The sound should appear centered between headphones or speakers and should not lean strongly to one side.

Right channel

Plays only through the right side. Compare its loudness with the left channel to spot a damaged driver, blocked earbud, loose connection, or balance setting.

Frequency sweep rows

Play tests one listed frequency through both channels. Start in the midrange, then move lower and higher; do not raise the volume sharply to force an inaudible tone.

I hear it / Nothing

Mark each frequency so the page tracks your progress. These are listening notes, not a medical hearing test: the speaker, room, output processing, and your hearing all affect the result.

Stop controls and output choice

Select the active tone again or use Stop tone to silence it. Sound follows the output selected by your operating system because many browsers do not expose a reliable speaker picker.

Start quiet

Pure tones can sound louder and harsher than music at the same volume. Start low and raise the level gradually, especially with headphones.

What you cannot hear may be normal

Very low tones need a driver large enough to move air, and hearing above roughly 15 kHz declines naturally with age. Missing either end is common and not necessarily a fault.

Channel routing

The tone is routed to a single channel at a time. If the left check comes out of the right speaker, the cable, the balance setting, or the audio device configuration is reversed.

Practical tips for better results

Use headphones for the channel checks — room reflections make speakers harder to judge.
If nothing plays at all, check that the browser tab is not muted and that the right output device is selected in your system settings.
Keep the volume moderate; sustained tones are fatiguing to listen to.

Frequently asked questions

Why can I not hear the highest tones?

Hearing sensitivity above about 15 kHz declines with age, and many small speakers do not reproduce those frequencies at all. Missing the top step alone is not a sign of a fault.

Can I choose which speaker the sound comes out of?

Browsers do not reliably let a page pick an output device, so the tone follows whatever output your operating system has selected. Change the output there and play the tone again.

Is anything recorded while I test?

No. The tones are generated in your browser and nothing is captured or sent anywhere.

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