Warning: Start at low volume! Very low frequencies can damage speakers if played too loud. Laptop speakers cannot reproduce these frequencies properly.

60-Second Frequency Sweep

Sweeps from 150Hz down to 1Hz over 60 seconds

150.0

Individual Test Tones

Test specific frequencies to identify your subwoofer's response characteristics

100

How to Use

Set your volume to a LOW level
Click "Start Sweep" to begin the 60-second test
Listen for when the bass becomes inaudible
Note the frequency where it drops off
Use individual tones to test specific frequencies
Compare results with your subwoofer's specs

What to Listen For

• Roll-off point: Where bass becomes weak
• Distortion: Rattling or buzzing sounds
• Port noise: Chuffing from bass ports
• Room modes: Peaks and dips in response
• Clean output: Smooth, controlled bass

Frequency Guide

• 100-80 Hz: Upper bass, kick drums
• 80-60 Hz: Bass guitar fundamentals
• 60-40 Hz: Deep bass, movie effects
• 40-20 Hz: Sub-bass, felt more than heard
• Below 20 Hz: Infrasonic, mostly felt

Important Notes

• Laptop speakers: Cannot reproduce low frequencies
• Headphones: Limited bass extension
• Room acoustics: Greatly affect bass response
• Volume: Start low to avoid damage
• Subwoofer placement: Affects performance

Go further

Need the full 20 Hz - 20 kHz range, or a sweep with a custom start, end and duration? Use the frequency sweep generator. To find the room modes that make one bass note boom and another vanish, try the room mode calculator, and download calibrated bass tones from the test tone pack. Where these frequencies sit against everything else: the audio frequency chart.