AVTester.com

Speaker Diagnostics

Verify channels, frequency response, and polarity.

New sample music for 2026: extra reference tracks are available in Speaker Test and Player.
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1. Stereo Check

2. Frequency & Polarity

🎶 Reference Tracks

Bass Test (Sub-Woofer)
Deep sine waves. Check for cabinet rattle.
Stereo Imaging
Panning sounds moving Left to Right.
Max Volume / Dynamics
Orchestral track. Test for distortion.
This is AVTester.com
Site theme tune.

New Sample Music (2026)

Aurora Stereo Drift
Wide panning + imaging (L↔R + depth)
Deep Sub Foundations
Clean sub-bass (30–60Hz) + no rattle
Vocal Presence Check
Mid clarity (1–4kHz) + sibilance control
Transient Punch
Kick/snare transients + tight attack
Dynamic Range Journey
Quiet→loud dynamics without distortion
Room & Space
Reverb tail + stereo ambience (subtle)
High-Frequency Sparkle
Air band (8–16kHz) without harshness
Low‑Mid Warmth Balance
Body (150–400Hz) without mud
Phase & Mono Safety
Mono compatibility + phase coherence
Reference Loudness
Clean, mastered reference around -12 LUFS

Tip: drop the WAV files into /html/demo/ using the filenames above (no uploads; local hosting only).

How to Test Stereo Speakers

Proper stereo imaging is essential for gaming, music production, and home theater setups. This tool generates pure waveforms to verify your audio equipment health.

  1. Channel Check: Click "Left" and then "Right". Ensure sound comes ONLY from the respective speaker. If sound comes from both simultaneously, your "Audio Enhancements" settings in Windows might be interfering.
  2. Bass Response: Use the "Sub-Bass" (40Hz) button. If you hear a rattling sound, your speaker enclosure may be loose or the volume is too high for the driver.
  3. Polarity Test: The "Polarity" click creates a phase impulse. If your speakers are wired out-of-phase (one +/- wire swapped), the sound will lack bass and feel "hollow" or like it's coming from behind you.

Technical Definitions

Pink Noise

Pink Noise contains all frequencies humans can hear, but with equal energy per octave. Audio engineers use this to "flatten" a room's EQ response.

Frequency Sweep

This tone slides from 20Hz (low) to 15kHz (high). Use this to identify specific frequencies that cause your room or desk to vibrate/resonate.