Speaker & Headphones Tester
Test left/right stereo balance, tone generation across 20Hz to 20kHz, automated frequency sweeps, and phase polarity.
1. Stereo Channel Separation
Click below to test individual Left, Center, and Right audio channels to confirm correct speaker / earphone orientation.
◀ Left Channel Only
Click to play sound on Left speaker
◀ Play Center (Both) ▶
Click to play sound on Both speakers
Right Channel Only ▶
Click to play sound on Right speaker
2. Frequency Tone Generator (20 Hz - 20,000 Hz)
440 Hz
Generate pure test tones to verify acoustic response, subwoofer bass, and high-frequency hearing limits.
3. Automated Frequency Sweep (20 Hz → 20,000 Hz)
Performs a continuous logarithmic frequency sweep to detect rattling speaker enclosures, acoustic dead spots, or audio distortion.
20 Hz
Idle
20,000 Hz
4. Stereo Phase & Polarity Test
Compare in-phase (sound centered & focused) vs out-of-phase (sound hollow, diffuse, and canceled in the center).