Bass Test Online: 20 to 200 Hz Sweep and Lowest Tone Finder
RingtoneGenerator runs a bass test on your speakers, subwoofer or headphones in your browser, free to try. Sweep 20 to 200 Hz, play 10 steady tones from 20 to 150 Hz or a sub-bass beat, and a 10-step test reports the lowest tone you can hear. It works on phones and computers in Chrome, Safari, Edge and Firefox. It is free with no sign-in, and nothing is recorded or uploaded.
- Free, no sign-in or upload
- 20 to 200 Hz sweep
- 10 tones, 20 to 150 Hz
- Lowest tone in 10 steps
Bass sweep
20 → 200 Hz · 30 s
Start low. Steady test tones can sound louder than music, so turn up slowly and stop if anything feels uncomfortable.
- SpacePlay / stop
- ←→Previous / next tone
- MMark the sweep
- YNI hear it / I don't
- ↑↓Volume
- EscStop
Start quiet. As the sweep rises, tap Mark when the bass first becomes audible (or felt): that is roughly how low your setup goes. Rattles, buzzing or a sudden boom at one note point to loose parts or a room resonance.
Every tone plays at the same digital level, but ears are much less sensitive to deep notes, so 20 to 30 Hz sounds far quieter (or is only felt). Stop if a speaker distorts or rattles.
Original patterns made in your browser. Listen for a tight, clean kick and sub notes that don't blur or distort. On small speakers you'll mostly hear the click of the kick, not the sub.
Find the lowest tone you can hear
We play tones from 150 Hz downward. For each one, tap whether you can hear or feel it. The test stops at the first tone you can't, and shows how low your speakers or headphones go at this volume.
Good to know
- Phone and laptop speakers usually can't play much below 100 to 150 Hz; that's physics, not a fault.
- Results depend on the volume: louder playback reveals lower notes. Keep it moderate to protect speakers and ears.
- Rooms boost some bass notes and cancel others, so moving around can change what you hear.
- This checks what your own device plays. It can't measure loudness in decibels or calibrate speakers.
- Every sound is generated in your browser. Nothing is recorded or uploaded, and there is no sign-in.
- Browsers only allow sound after you tap or press a key, so nothing plays until you press a button.
What a Bass Test Tells You
Music mixes bass with everything else, so it is hard to tell whether a weak low end comes from the song, the speaker or the room. A bass test removes the guesswork. It plays clean sine tones and slow sweeps between 20 and 200 Hz, the range of kick drums, bass guitar, 808s and movie rumble, so you hear how low your setup really goes, where it rattles and where the room booms. RingtoneGenerator runs the whole bass test in the player above, with no app and nothing to download.
- Music sounds thin, with no kick or body.
- A new subwoofer hums, but you are not sure it plays.
- Something buzzes or rattles on deep notes.
- Bass booms in one seat and vanishes in another.
- You turned on bass boost and cannot hear a change.
Why Use This Online Bass Test
Four ways to test the bass, a result you can read, and a volume that starts low.
Sweep 20 to 200 Hz
A smooth sweep of 15, 30 or 60 seconds, up or down, once or on a loop. Tap Mark the moment the bass comes in.
Ten steady tones
Sine tones at 20, 25, 30, 40, 50, 60, 80, 100, 120 and 150 Hz for a careful subwoofer test, one note at a time.
Sub-bass beats
Three original patterns, from a punchy kick to deep 30 to 40 Hz swells, at 80 to 140 BPM, so you feel the low end like music.
Lowest tone result
A 10-step bass test from 150 Hz down to 20 Hz stops at the first tone you miss and says what that means for your gear.
Starts quiet
The volume opens at 30% and warns you past 70%, and every tone fades in and out, so it starts and stops without a click.
Free, private, any device
Runs in the browser on phones and computers. No sign-in, no app, and nothing is recorded or uploaded.
How to Test the Bass in 3 Steps
A full bass test takes about two minutes, and you can repeat any part of it.
- 1
Connect and turn down
Plug in or pair the speakers, subwoofer or headphones you want to check, and keep the system volume low. The player itself starts at 30%.
- 2
Pick a test and press play
Choose Sweep, Tones, Beat or Lowest tone, then press the play button or Space. Raise the volume slowly until the bass is clear.
- 3
Read the result
Tap Mark during the sweep, step through the tones with the arrow keys, or answer the Lowest tone steps to see the deepest note your setup plays.
Bass Test Tools for Subwoofers, Speakers and Headphones
Each tab of the bass test answers a different question about the low end.
Sweep 20 to 200 Hz and Mark Where the Bass Starts
The sweep glides from 20 Hz up to 200 Hz, or back down, on a logarithmic curve, so every octave gets the same time: 20 to 40, 40 to 80 and 80 to 160 Hz each take about 30% of the run. Start it quietly and press Mark: I hear it now (or M) the moment the bass comes in. The big readout follows the live frequency and keeps your mark, such as "Marked at 32 Hz". Sweeping down, the button becomes Mark: it just faded. Listen for buzzing, a sudden boom at one note or a gap where the sound drops out: that is the most useful bass test you can run in a minute.
Run the SweepSubwoofer Test Tones From 20 to 150 Hz
The Tones tab holds ten steady sine tones: 20, 25, 30, 40, 50, 60, 80, 100, 120 and 150 Hz. Tap one to play it, and use the left and right arrow keys to step to the next. A steady tone is the clearest subwoofer test there is: walk around the room, rest a hand on the cabinet and check that the sub still plays where the crossover hands over, often near 80 Hz. All ten tones play at the same digital level, yet 20 to 30 Hz sounds much quieter, because ears are far less sensitive to deep notes. Car audio fans who search for kicker test tones want this same kind of steady 40 or 50 Hz tone as a reference while they set a sub amp by ear.
Play a Sub ToneSub-Bass Beats to Feel the Low End
Sine tones show the range; beats show the punch. The Beat tab plays three original patterns made in your browser. Four on the floor is a tight kick with sub notes, 808 boom glides long bass notes down to about 37 Hz, and Deep rumble swells around 30 to 40 Hz, the bass you feel more than hear. Switch the tempo between 80, 100, 120 and 140 BPM. A good system keeps the kick tight and the sub notes clean. A weak one blurs them, and a small speaker plays little more than the click of the kick.
Play a Bass BeatFind the Lowest Tone You Can Hear
For a number you can write down, open Lowest tone and press Start the step test. It plays 150 Hz first, then 120, 100, 80, 60, 50, 40, 30, 25 and 20 Hz. Answer I hear or feel it or I don’t hear it for each one (Y and N work too), and press Replay if you missed it. The bass test stops at the first tone you miss and shows the lowest one you heard, with a plain reading: 20 to 25 Hz is subwoofer territory, 30 to 40 Hz is very deep bass, 50 to 60 Hz is solid, 80 to 100 Hz is typical of laptops and small Bluetooth speakers, and 120 to 150 Hz is phone speaker bass.
Find My Lowest ToneBass Test Map: What Each Frequency Tells You
Drag from 20 to 200 Hz to see the musical note, the wavelength and the gear that usually reaches it. The map is silent; the player above makes the sound.
The low end of 808s, organ pedals and movie rumble. Needs a sub or big drivers.
- Phone speakerfrom 120 Hz
- Laptop, small Bluetoothfrom 80 Hz
- Bookshelf, soundbarfrom 50 Hz
- Good headphones, big speakersfrom 30 Hz
- Subwooferfrom 20 Hz
Low notes have huge waves: a 40 Hz tone is about 8.6 meters (28 feet) long. That is why bass needs a big cone that moves a lot of air, and why a room adds peaks and dips you can hear as you walk around during a bass test.
Bass Test Tips for Honest Results
Small habits that make one bass test easy to compare with the next.
Same volume every time
Louder playback reveals lower notes. Leave the slider in the same spot when you compare two speakers or two seats.
Move around the room
Rooms boost some bass notes and cancel others. Try one tone at your seat, near a wall and in a corner.
Run a bass boost test
Play 40 Hz, then switch your bass boost or EQ on and off. If nothing changes, the setting does not reach that note.
Stop on distortion
Rattling, flapping or a harsh buzz means too much level. Turn down at once; deep tones can push a cone past its limit.
Ways to Test the Bass, Compared
What each option can and cannot tell you. Only a measurement microphone gives calibrated numbers.
| Ways to Test the Bass, Compared | RingtoneGenerator bass test | Tone videos and files | Phone apps | Measurement mic and software |
|---|---|---|---|---|
| Free | Often with ads | Mic costs extra | ||
| Nothing to install | Download or stream | |||
| Sweep with a mark button | 20 to 200 Hz | Sweep only | Some apps | |
| Steady tones to step through | 10 tones, 20 to 150 Hz | One file per tone | ||
| Lowest tone result | Some apps | |||
| Sub-bass beat patterns | 3 patterns, 80 to 140 BPM | Varies | Some apps | |
| Calibrated level or response graph |
Who Needs a Bass Test
Anyone who wants to know what the low end of a system really does. Keep the volume moderate, especially with headphones.
Home theater
Check that a new subwoofer plays, find where it fades out and listen for room boom before movie night. The speaker test checks each main channel.
Car audio
Play a steady 40 or 50 Hz tone from your phone while you tune the sub, or run the sweep to find the door panel that rattles.
Headphones
A headphones bass test shows whether a pair really reaches 20 to 30 Hz. Check the fit too: a loose seal loses most of the bass.
Comparing speakers
Run the same bass sound test on a Bluetooth speaker, a soundbar and a laptop to compare how low each one goes at one volume.
Music makers
Check that your monitors play the sub notes of an 808 before you mix them, then open the frequency analyzer to see what a track holds below 60 Hz.
Hunting rattles
Step through the tones slowly to find the one note that makes a shelf, window or panel buzz, then fix or dampen it.
Bass Test FAQ
Straight answers about bass, subwoofers and what a browser bass test can and cannot do.
How do I test the bass on my speakers?
Open the bass test above, keep the volume low and press play on the Sweep tab. As the tone rises from 20 to 200 Hz, tap Mark when you first hear the bass: that is roughly how low your speakers go. Then step through the fixed tones to listen for rattles.
What frequency is bass?
Bass covers roughly 20 to 250 Hz. Sub-bass is the bottom part, about 20 to 60 Hz, where 808s, pipe organs and movie rumble live; the range above it carries kick drums and bass guitar. The lowest string on a standard bass guitar plays 41.2 Hz.
What is the difference between bass and treble?
Bass is the low end, about 20 to 250 Hz, which you hear as depth and feel as thump. Treble is the high end, roughly 4 kHz to 20 kHz, which carries cymbals, sparkle and the "s" in speech, and the midrange sits between them. A bass test checks only the low end; for highs, use the tone generator.
How does bass work?
A speaker makes bass by pushing its cone back and forth slowly, 40 times a second for a 40 Hz note. Each wave is several meters long, so moving enough air takes a large cone and a lot of travel. That is why subwoofers are big and phone speakers, with cones smaller than a coin, play almost no deep bass.
How do I run a subwoofer test?
Play the 40 Hz and 50 Hz tones first: a working sub plays them clearly, while small speakers barely do. Then run the sweep to see where it fades out, and the Lowest tone steps for a number. If you hear nothing, check the power, the cable, the crossover and your receiver setup. This subwoofer test plays through whatever output your device uses.
Why can’t I hear 20 Hz?
Ears are much less sensitive to very deep notes, so 20 Hz needs far more level to sound as loud as 100 Hz, and many speakers cannot play it at all. You may feel it as pressure instead of hearing it. Do not crank the volume to chase it; the speaker can be damaged first.
Why does my phone or laptop fail the bass test?
Small speakers cannot move enough air for deep notes. Phone speakers usually fade out below 100 to 150 Hz and laptops a little lower; that is physics, not a fault. Use headphones or larger speakers to test for bass that goes deeper.
Can I do a headphones bass test?
Yes. Plug in the headphones, keep the volume low and run the sweep or the Lowest tone steps. Good closed headphones often reach 20 to 30 Hz when they seal well, so press the cups in gently to hear what a good fit adds. The headphone test checks left, right and fit.
What are kicker test tones?
People look for kicker test tones when they set up a car subwoofer: steady sine tones, usually 40 or 50 Hz, used as a reference while adjusting an amplifier. The fixed tones on this bass test do the same job in a browser, with no files to download. RingtoneGenerator is not linked to any car audio brand, and for exact gain setting, follow your amp maker’s guide.
Can a bass test damage my speakers?
At normal levels, no. Deep tones at high volume can push a cone past its limit, especially below a speaker’s rated range, so start low, raise the level slowly and stop at any flapping, rattling or distortion. The player opens at 30% and warns you past 70%.
Is there a bass test app to download?
You do not need one. This online bass test runs in Chrome, Safari, Edge and Firefox on phones and computers, so it works like a bass test app with nothing to install. On iPhone, the first tap starts the audio.
Can I save the bass tones as files?
Not on this page, which plays everything live. To save one, set any frequency from 1 Hz in the tone generator and press Download WAV for a file of 1 to 30 seconds.
Why does the bass sound different around the room?
Bass waves bounce off the walls and add up in some spots and cancel in others; these are called room modes. Play one steady tone, such as 50 Hz, and walk around: loud and quiet zones are normal. Moving the sub or your seat helps more than EQ.
Is this bass test free and private?
Yes. It is free with no sign-in, and every tone is made in your browser; nothing is recorded or uploaded. It checks what your device plays but cannot measure decibels or calibrate a system. A decibel meter can estimate how loud the room gets.
More Tests After Your Bass Test
Check every part of your sound, from left and right to the highest tones.
Put Your Speakers to Work
Phone speakers drop deep bass, so a ringtone that cuts through uses the bright part of a song. Turn any track into one with the ringtone maker on our home page.
Run Your Bass Test Now
Turn the volume down, press play and sweep 20 to 200 Hz, step through ten subwoofer tones or find the lowest note you can hear. This bass test is free, needs no sign-in and never records or uploads a thing.