Speaker Test
Test your speakers and headphones online — check left/right channel balance, bass, treble, frequency sweep, and stereo separation. No download required.
Left Channel
Test left speaker only
Right Channel
Test right speaker only
Both Channels
Test both speakers together
Stereo Ping-Pong
Alternating L/R stereo test
Bass Test
60 Hz low-frequency tone
Midrange Test
1 kHz voice-range tone
Treble Test
8 kHz high-frequency tone
White Noise
Full-spectrum audio test
How to Test Your Speakers
Complete a full audio system check in under two minutes using our suite of audio tests.
Set Your Volume
Adjust the master volume slider at the top of the tool to a comfortable level. Start at around 50–70% to avoid any sudden loud sounds. Your device's system volume also applies.
Run Channel Tests
Click "Left Channel" — you should hear sound from your left speaker only. Then click "Right Channel" for the right. If both play at the same time during one-channel tests, your audio output may not support stereo.
Test Frequency Range
Use the frequency sweep generator to play tones from 20 Hz to 20,000 Hz. Listen for any frequencies that sound distorted, missing, or rattling. Use the Bass, Midrange, and Treble quick tests to check each range individually.
Professional Speaker Diagnostics
A comprehensive speaker and headphone testing suite powered by the Web Audio API — no plugins, no installs.
Left/Right Channel Test
Independently test each speaker channel to verify stereo output is working correctly. Essential for catching wiring or driver issues in headphones and speaker systems.
Frequency Sweep Generator
Generate any frequency from 20 Hz to 20,000 Hz using sine, square, sawtooth, or triangle waveforms. Use the auto-sweep to scan the entire audible spectrum automatically.
Bass, Mid & Treble Tests
Run dedicated frequency range tests: 60 Hz bass test, 1 kHz midrange test, and 8 kHz treble test. Quickly identify frequency response issues in your audio system.
Stereo Ping-Pong Test
Alternating left/right audio ping-pong test to verify stereo imaging and channel separation in headphones and speaker systems. Great for checking spatial audio accuracy.
White Noise Generator
Full-spectrum white noise test to identify distortion, rattle, and resonance across all frequencies simultaneously. A classic audio quality diagnostic tool.
Oscilloscope Visualizer
A real-time waveform oscilloscope visualization of the audio signal being generated. Visually verify waveform shape and frequency characteristics while playing tones.
Frequently Asked Questions
Common questions about testing speakers and headphones online.
Click the "Left Channel" card — you should hear a tone from your left speaker or the left side of your headphones only. Then click "Right Channel" and sound should come from the right side only. If you hear both speakers during either test, your audio output may be set to mono, or your headphone/speaker cable may be partially disconnected. Check your audio settings and make sure stereo output is selected.
Check these in order: (1) Make sure your device's system volume is not muted or at zero. (2) Check the master volume slider at the top of the tool. (3) Verify your speakers/headphones are properly connected. (4) On mobile, check if silent/vibrate mode is enabled. (5) If using Bluetooth headphones, confirm they're connected. (6) Some browsers block audio until you interact with the page — clicking any button should trigger audio playback to activate.
The frequency sweep plays audio tones gradually from 20 Hz (the lowest frequency humans can hear) up to 20,000 Hz (the highest). As it plays, listen for: (1) Frequencies that seem distorted or crackly — this can indicate a blown speaker. (2) Frequencies that are barely audible — a sign of limited frequency response. (3) Physical rattling in the speaker cabinet at low frequencies — a sign of damaged suspension or loose components. This is a standard audiophile and audio engineer diagnostic technique.
Yes! The Speaker Test works with any audio output device connected to your system, including Bluetooth headphones, wireless earbuds, USB DAC/amplifiers, and built-in speakers. The tool uses your browser's default audio output. To select a specific output device, use your operating system's sound settings to set the desired device as the default output before running the test.
White noise contains equal amounts of all audible frequencies simultaneously. This makes it excellent for: identifying rattles and resonance in speaker cabinets, checking that no frequency range sounds dramatically quieter or louder than others, and testing the overall tonal balance of your speakers. A well-functioning speaker should produce white noise that sounds like uniform static or "hiss" without any obvious tonal character.
Low-frequency reproduction (bass) requires physical speaker drivers capable of moving air at slow rates. Small laptop speakers, phone speakers, and earbuds physically cannot reproduce frequencies below 80–100 Hz regardless of volume. This is a hardware limitation, not a software issue. A very quiet or inaudible bass test result is actually expected on small speakers and means they're working normally — they simply don't have the physical driver size to reproduce bass frequencies.
Yes! The Speaker Test works on all modern smartphones and tablets using both iOS Safari and Android Chrome. On mobile, connect headphones to properly test left/right stereo separation, as most phone speakers are mono or very close together. Note that iOS Safari requires a user gesture (a tap/click) before audio can play, so clicking any test button will initialize the audio system automatically.