Speaker Test

Start by playing controlled test tones on the left channel, then the right channel, and finally both channels together. Listen for clean sound, equal volume, and no crackling.

Click 'Test Left' to play audio exclusively through the left channel (panned 100% left). If you hear sound coming from the right side, check your wiring or stereo settings.

Click 'Test Right' to route sound only through the right channel (panned 100% right). Ensure the output is clear and balanced with the left channel.

Click 'Test Both' to play an equal stereo signal across both drivers simultaneously. The sound should feel full and evenly distributed in the room.

In a working stereo setup, sound played on the left only appears on the left, sound on the right only appears on the right, and centered audio appears to originate midway between the speakers.

Use the Speaker Balance slider to sweep between left and right channels while listening for smooth transitions without dropouts or sudden volume spikes.

Play low-frequency sine tones between 30 Hz and 120 Hz at moderate volume. Listen for physical cabinet rattling, buzzing, or speaker cone distress.

Play high frequencies between 6 kHz and 18 kHz. Listen for clean, airy highs without harsh sibilance, hiss, or complete loss of audibility.

Run a continuous frequency sweep from 20 Hz to 20 kHz. Listen for sudden volume drops or harsh resonance peaks throughout the sweep.

A 440 Hz or 1,000 Hz tone is the industry standard for general speaker clarity, while 60–80 Hz tests bass response and 8–10 kHz tests tweeter performance.

A frequency sweep is an audio tone that smoothly transitions across the audible spectrum (20 Hz to 20,000 Hz) to reveal resonances, rattles, and driver crossover points.

Buzzing is commonly caused by electrical ground loops, loose speaker grilles, vibrating desk objects, or damaged voice coils.

Rattling usually occurs when low-frequency sound vibrates loose speaker enclosures, mounting screws, or nearby tabletop items.

Uneven volume can result from an uncentered balance slider in your OS, different acoustic wall distances, or uneven amplifier gain.

Laptop speakers use tiny micro-transducers limited in physical excursion and enclosure volume. Built-in audio limiters also cap maximum output to prevent driver damage.

Check your 3.5mm audio jack or USB connection. A partially inserted plug frequently leaves one stereo channel disconnected.

Distortion happens when digital gain is set too high (causing clipping), or when the physical amplifier drives the speaker cone past its linear excursion limit.

No. A web browser can generate accurate tones, but cannot measure physical acoustic sound waves without a calibrated measurement microphone.

No. The on-screen dB meters show browser-internal digital signal levels, not real-world acoustic Sound Pressure Level (SPL) in your room.

No. Measuring Total Harmonic Distortion requires external acoustic recording hardware and FFT analysis software.

No. All speaker tests generate sound through your browser's audio output. No microphone access or recording permissions are required.

Yes. Modern Web Audio API oscillators synthesize mathematically exact sine, square, and triangle waveforms with sub-millisecond precision.

Yes, when conducted at moderate volume. Always begin tests at low volume (around 25–50%) and avoid sustained high-volume playback of extreme low or high frequencies.