Keep volume fixed
Changing level between tones makes the comparison meaningless and can stress the driver.
Low-frequency check
Bass Test
Play controlled sine tones from 20 to 100 Hz. Listen for clean output, sudden gaps, buzzing, or objects vibrating around your speakers.
Start quietly. Low bass can drive speakers hard even when it does not sound loud. Stop if you hear harsh mechanical noise.
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A better method
How to test bass without fooling yourself
Listen for cleanliness
A quiet clean fundamental is more useful than loud buzzing, port noise, or cabinet rattle.
Repeat on another device
A second headphone or source helps separate a transducer limit from a software setting.
Interpreting the sound
What the bass result means
A smooth transition is more informative than hearing every tone equally. Your ears are far less sensitive at the lowest frequencies, so 20 Hz will naturally seem much quieter at the same electrical level.
Clean but quiet below 40 Hz
Likely normal low-end roll-off for smaller speakers or many earbuds.
Buzz at one exact tone
Check nearby objects, earcup seals, grilles, ports, or a loose component.
Bass disappears on both sides
The device, equalizer, high-pass filter, or driver size may limit deep bass.
One side rattles
Lower volume and swap sources. A repeatable one-sided fault may indicate driver damage.
Explore mids and treble with the full frequency test, or confirm driver direction first with the left and right headphone test.
Useful answers
Frequently asked questions
What bass frequency should headphones reproduce?
Many good headphones reproduce useful bass to around 30–40 Hz, while low-level 20 Hz output varies. A specification alone does not tell you how loud or clean the bass is.
Why can I feel 20 Hz but barely hear it?
Very low frequencies are perceived partly as vibration and pressure. Human hearing is much less sensitive at 20 Hz, and small drivers may produce distortion instead of a strong fundamental tone.
Why does my speaker rattle during the bass test?
Lower the volume first. The cause may be a loose grille, object, cable, desk panel, damaged driver, or excessive excursion. Move nearby objects and repeat at a low level.
Can this test a subwoofer?
Yes, as a basic listening check. It can reveal whether output is present at the selected tones, but it does not measure crossover response, phase alignment, or sound pressure accurately.
Is louder bass always better?
No. Clean, controlled output matters more than maximum loudness. A strong peak can make one note impressive while hiding uneven response elsewhere.