Speaker & Headphone Test
Test speakers and headphones in-browser with left, right, and stereo tones plus a 20 Hz-20 kHz sweep. Find silent or swapped channels instantly.
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What is Speaker & Headphone Test?
The Speaker & Headphone Test plays channel-identifying sine tones (hard left, hard right, centered) and a logarithmic 20 Hz - 20 kHz frequency sweep through the Web Audio API. Compare what you hear against what should play to find silent, swapped, or unbalanced channels and driver rattles.
Key Benefits
- Diagnose dead or swapped channels in under a minute
- Verify stereo balance before mixing or listening sessions
- Frequency sweep exposes buzzes, rattles, and hearing limits
- Adjustable frequency and volume for fine comparisons
- Works anywhere - no software install, no audio test files
Common Use Cases
- •Checking a new headset or speaker pair after unboxing
- •Diagnosing which channel died on aging desktop speakers
- •Verifying left/right labeling on custom cable builds
- •Testing a laptop after repair or driver reinstall
- •Setting up a classroom or studio listening position
How to Test Your Speakers or Headphones
- Play the left channel: Tap Play left - sound must come only from the left speaker or earcup.
- Play the right channel: Tap Play right - sound must come only from the right side. A reversed result means channels are swapped.
- Play both and compare: The centered tone should sound balanced and equally loud on both sides; drift means an imbalance.
- Run the frequency sweep: Play the sweep and note where sound drops out or rattles - low-end roll-off and high-frequency limits show up here.
Key Features
- Dedicated left, right, and both-channel test tones
- Logarithmic 20 Hz to 20 kHz sweep with live frequency display
- Adjustable tone frequency and real-time volume control
- Stereo panning via Web Audio for precise channel isolation
- Listening guide for catching swapped or silent channels
- No downloads or plugins - runs in any modern browser