Free online speaker/headphone test tool. Check left/right channels, frequency response and stereo effects. No installation needed. 🔒 No Registration · Data Stays Local
🔊 Speaker Test
Click a button to start testing
🔒 All computation happens on your device — Speaker Test, other values and other inputs stay in your browser. No data is uploaded to any server.
📖 How to Test Speakers and Headphones
Left/right channel test: Click “Test Left Channel” — sound should come only from the left speaker or earbud; then click “Test Right Channel” and it should come only from the right. If both sides play the same channel, or the sides are reversed, your wiring or balance setting is wrong.
Frequency range test: Click “Frequency Sweep” to play a sine sweep from 100Hz to 8000Hz. Lows (100–300Hz) give music its body, mids (300–3000Hz) carry vocals, and highs (3000–8000Hz) handle detail. A band that suddenly sounds muffled, crackly or silent points to a weak driver or crossover.
How to tell if a speaker is broken: ①No sound at all — check volume and mute, then try another device. ②Only one side works — a broken channel or amp. ③Crackling, buzzing or popping — a damaged cone or voice coil, or too much volume. ④A gap during the sweep — a faulty crossover or driver. Keep the volume at a comfortable level while testing.
❓ FAQ
How to test speakers?
Click left/right channel buttons to verify each channel works. Frequency sweep helps detect distortion or crackling at different frequencies.
Do I need to install software?
No! Uses the browser Web Audio API to generate test tones directly. No installation or plugins required.
Why can't I hear anything?
Check: 1) Device volume is on; 2) Not in silent mode; 3) Browser isn't muted by the system. Some browsers require a click before playing audio.
How do I test left and right channels?
Click “Test Left Channel” and listen — audio should come only from the left side. Then click “Test Right Channel” and it should come only from the right. If both sides are identical or swapped, your cable, adapter or OS balance setting is the likely cause.
How do I know if my speaker is broken?
Test each channel separately: if one side stays silent, that channel or its wiring is likely at fault. Crackling, buzzing or popping usually means a damaged cone or voice coil, while a band that goes muffled or silent during the sweep points to a faulty crossover or driver. Keep the volume moderate while testing.
What frequency range does the sweep cover?
The sweep runs from 100Hz to 8000Hz, covering low bass, the vocal midrange and high-frequency detail. The left, right and both-channel tests use a 440Hz reference tone so you can quickly confirm each channel plays.