🔊 Bass Test — Subwoofer & Low-Frequency Tester
Use this online bass tester to isolate low frequencies, find rattles, check your subwoofer crossover, or dial in EQ.
Keyboard: 1-0 = freqs, Space = sweep, Esc = stop
Bass Test — subwoofer and low-frequency testing from 10Hz to 200Hz. Check bass response, find rattles, tune your subwoofer. Free, browser-based, Web Audio API.
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💡 What Can You Test With a Bass Test?
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Subwoofer Tuning
Fine-tune crossover frequency, phase, and gain. Find the perfect integration between your subwoofer and main speakers for seamless bass.
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Room Acoustics
Identify room modes and standing waves in the bass region. Certain frequencies will boom or cancel out depending on room dimensions.
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Car Audio
Test your car's subwoofer and door speakers for rattles. Find which interior panels vibrate at specific bass frequencies and dampen them.
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Headphone Bass
Check if your headphones can reproduce deep bass cleanly. Many consumer headphones roll off below 50Hz — find where yours drop off.
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Music Production
Verify your studio monitors and sub can handle bass-heavy genres. Check for muddiness in the 100–200Hz range before final mixes.
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Home Theater
Calibrate your subwoofer for movies. Explosions and soundtracks demand clean, powerful bass down to 20Hz — test if your system delivers.
✨ Why Use Our Bass Test Tool?
✓Pure low-frequency tones from 10Hz to 200Hz for precise bass testing
✓Real-time frequency display — see exactly which frequency is playing
✓Adjustable volume to safely test at any listening level
✓Works on any device — desktop, tablet, and mobile
✓No downloads or sign-ups — instant browser-based testing
✓Works offline as PWA — add to home screen for one-tap access
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💡 Frequently Asked Questions
What is a bass / subwoofer test?▼
This tool plays isolated low frequencies (20–250Hz) to test your subwoofer and bass response. It helps you check if your subwoofer is working correctly and if bass frequencies are balanced.
What frequency should a subwoofer play?▼
A typical subwoofer handles 20–200Hz. The crossover point with main speakers is usually 80–120Hz. If you hear distortion or rattling at specific frequencies, check your subwoofer placement and settings.
Why is my subwoofer rattling during the test?▼
Rattling can be caused by: loose objects near the sub, port chuffing at high volumes, damaged cone surround, or room resonance. Try repositioning the sub or lowering the volume.