Speaker Test — Check Left, Right and Frequencies
Turn your volume down before you start, then pick a channel.
Nothing playing
About the Speaker Test
Most speaker problems are not a total failure but a half one: the left side is silent, the balance has drifted, or a plug is not seated properly and one channel drops out. Music makes this surprisingly hard to notice, because a stereo mix puts most of the important sound in both channels anyway.
This speaker test separates the channels so there is nothing to hide behind. Play a tone through the left side only and you should hear it from the left and nowhere else. Do the same on the right. If a tone marked left comes out of the right speaker, your cables or your channel settings are swapped.
The frequency buttons check a different thing: the range your speakers can actually reproduce. Small laptop speakers usually give up below a few hundred hertz, so the 110 hertz tone may be faint or missing. At the other end, 10 kilohertz is faint or inaudible for many older adults regardless of the equipment, which is normal hearing loss with age rather than a fault.
All tones are generated in your browser, so nothing is downloaded and nothing is sent anywhere.
How to test your speakers
- Lower your system volume first. Test tones are much harsher than music.
- Press Left only, then Right only, and confirm each side plays on its own. If one side stays silent, check the cable, the connector and your system balance before writing the speaker off.
- Press Both and check that the tone sits evenly in the middle.
- Step through all five frequencies, from 110 Hz up to 10 kHz, to hear how much range your speakers cover.
- Listen for distortion or rattle at each frequency. A buzz on the low tones is usually the desk or the furniture resonating, not the speaker itself.
- Press Stop when you are done.
Frequently asked questions
I hear nothing at all. What should I check?
Check the system volume and mute, confirm the right output device is selected, and make sure the browser tab is not muted. Wired speakers should be checked at the plug — a headphone jack pushed halfway in often silences one or both channels.
The left tone comes out of the right speaker.
Your channels are swapped. On a desktop this is almost always the physical cables; on a laptop or an external interface it can also be a setting in the audio control panel. Swap the cables or correct the channel mapping.
Which frequencies does the test play?
Five tones, from lowest to highest: 110 Hz, 440 Hz, 1 kHz, 4 kHz and 10 kHz. The middle three sit where most music and speech live, so a speaker that reproduces those cleanly is doing its main job; the two ends are the stress test. Human hearing runs roughly 20 Hz to 20,000 Hz, but almost no speaker covers that whole span.
The low tone is very quiet or missing.
That is normal for small speakers. Laptop and phone speakers physically cannot move enough air to reproduce 110 hertz at any volume. On a system with a subwoofer, the same tone should be clearly audible.
I cannot hear the 10 kHz tone.
Very common and usually not a speaker problem. Hearing at the top of the range declines with age: by middle age the ceiling drops toward 12 kilohertz, and the tones just below it turn faint first, so 10 kilohertz can be hard to hear at normal volume. If a younger listener hears it on the same speakers, the equipment is fine.
Why does the sound fade in instead of starting instantly?
An abrupt start makes the speaker cone jump, which produces an audible click and is hard on small drivers. Ramping the volume over a few milliseconds removes that click entirely.
How is this different from a hearing test?
This one checks the equipment; a hearing test checks you. The goal here is to find a channel that is silent, a balance that has drifted, or a band your speakers simply do not reproduce, so the answer is about the hardware in front of you. A hearing test asks the opposite question — how high a tone your own ears still reach — and it is best run on headphones, because laptop speakers usually give up before your hearing does.
Are any audio files downloaded?
No. The tones are generated in your browser as pure sine waves, so no audio is transferred and nothing is recorded or sent anywhere.
Is it free, and can I run it on speakers that are not mine?
Free, with no account and no download, and yes — a meeting room or a shop display is fair game. The tones are generated inside the page as it plays them rather than fetched as files, so nothing arrives on the computer and nothing is left behind on it.
What do I need before I start?
Both speakers positioned as you normally use them, system volume somewhere in the middle, and any equalizer or spatial audio effect switched off. Those effects move sound between channels on purpose, which is precisely what a channel check is trying to detect.