How do I know if my speakers can play the low end?

Play the lowest zones (20–60 Hz) with the sine wave. Studio monitors typically reach 40–50 Hz; nearfield bookshelves 50–70 Hz; laptops 100–150 Hz; phones 200+ Hz. The on-screen tone is real even when speakers can't deliver it.

Why do square and sawtooth sound louder than sine?

Richer waveforms contain harmonics across the spectrum. A square wave has odd harmonics at 1/3, 1/5 amplitudes; sawtooth has both odd and even at 1/n. The tool auto-scales gain per waveform so switching doesn't blast or vanish.

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Bass Frequency Finder

This bass frequency finder is an interactive map of the bass range (20–500 Hz) with every musical note tied to its frequency, color-coded EQ zones, instrument range overlays, and audible playback. Drag the cursor to hear any note, find the kick drum sweet spot, or hunt the muddy band of your bass guitar.

82 Hz

note E2 · 0 cents

Body & warmth

—

Wave

Frequency 82 Hz

Volume 20%

The cyan ticks under the chart mark every C note (octave boundary); the yellow ticks mark the open strings of a 4-string bass (E1 · A1 · D2 · G2). Small green ticks are the natural notes; thin grey ticks are sharps/flats.

Instrument range overlay

Toggle an instrument to draw its fundamental + harmonic reach on the chart above.

EQ recommendation zones

Click a chip to jump the cursor to that zone, then press Listen to hear it.

Bass Frequencies — A Working Guide

The bass range — roughly 20 Hz to 500 Hz — is where the foundation of almost every musical mix lives. It's also where the most common mixing problems hide: muddy low-mids that smear vocals, missing punch on a kick drum, sub-bass that disappears on small speakers. This bass frequency finder gives you a hands-on bass note chart of that range so you can hear what each frequency does instead of guessing — making it a practical starting point for low end mixing decisions.

The 4-string bass open notes

Standard 4-string bass tuning (E A D G) puts the open strings at E1 = 41.20 Hz, A1 = 55.00 Hz, D2 = 73.42 Hz, and G2 = 98.00 Hz. These are the core bass guitar frequencies that define where a 4-string instrument's fundamentals live — all four notes are marked in yellow on the chart so you can see exactly where your bass sits. A 5-string adds a low B0 = 30.87 Hz; a 6-string adds a high C3 = 130.81 Hz on the top.

The five bass zones

Sub rumble (20–40 Hz): Pipe-organ pedals, sub-bass synths, room shake. Any sub-bass frequency in this range sits below what most laptop and phone speakers can reproduce at all. On a proper sub it adds physical weight you feel as much as hear.

Punch & weight (40–80 Hz): Kick-drum thump, bass-guitar low fundamentals (E1, A1). This is the "chest hit" frequency band. Too little and the mix feels lightweight; too much and it eats headroom.

Body & warmth (80–160 Hz): Where bass guitar and kick drum fundamentals fight for space with male vocal chest tone and the low end of every other instrument. Boost gives fullness; cut adds clarity.

Mud zone (160–300 Hz): The classic "blanket over the speakers" range. When too many instruments stack here, the mix loses definition. A 2–4 dB cut around 200–300 Hz on a few tracks is the single most common low-end mix fix.

Upper bass (300–500 Hz): Boxiness / honkiness boundary. The character of acoustic instruments lives here too — too much makes a snare hollow, too little makes a piano thin.

Extended-range bass: 5-string, 6-string, and detuned guitars

A standard 5-string bass adds a low B0 = 30.87 Hz — barely in the sub-rumble zone and below the useful range of most studio monitors. A 6-string bass extends upward to C3 = 130.81 Hz. Drop-D tuning lowers the low string from E1 (41 Hz) to D1 = 36.71 Hz, and 8-string guitars can reach below 30 Hz. These fundamentals live in the 20–40 Hz sub-bass region where high-pass filtering (typically 20–30 Hz) keeps the signal chain clean without audibly thinning the tone.

Kick drum and bass guitar frequency relationship

The classic mixing challenge is carving space between kick drum and bass guitar. Understanding where each kick drum frequency sits is the first step: the thump lives at 60–100 Hz, the body at 100–200 Hz, and the click (attack) at 2–5 kHz. A bass guitar's fundamentals occupy exactly the same 40–200 Hz window. Common approaches: sidechain compression (bass ducks when kick hits), frequency complementary EQ (boost kick at 80 Hz, cut bass at 80 Hz and vice versa), or simple low-shelf arrangement — deciding which instrument "owns" the sub and high-passing the other. Use this tool to audition both instruments' zones side-by-side before committing to an EQ move.

Why hearing the frequency matters

EQ-by-numbers ("cut 4 dB at 250 Hz") is fine when you've done it ten thousand times. Until then, it's faster and more reliable to sweep and listen: use the EQ Frequency Finder, boost a narrow band, drag it across the spectrum, and learn what each region sounds like. After a few sessions your ears will know "this is 80 Hz" the moment you hear it — and you'll EQ by intent instead of by recipe. For critical low-end decisions, you can verify the exact pitch against a reference with the online tone generator.

Frequently Asked Questions

Why does the lowest bass sound thin or disappear?

Most laptop and phone speakers roll off below 100–150 Hz. The fundamental of a low E (41 Hz) is simply not there on those systems — what you hear is the harmonics at 82, 123, 164 Hz etc. The brain reconstructs the missing fundamental (a perceptual phenomenon called the "phantom fundamental"), so you still hear the note as "low E", just with no actual sub-bass energy. Plug in headphones or a subwoofer to hear the real low end.

What's the difference between fundamental and harmonics?

A bass note at 82 Hz (low E on bass guitar) has its fundamental at 82 Hz and overtones (harmonics) at integer multiples: 164, 246, 328, 410 Hz, and on up. Most of a bass note's character — the pluck, the growl, the string definition — actually lives in the upper harmonics (700 Hz – 5 kHz), not the fundamental. That's why a 80 Hz pure sine tone sounds nothing like a bass guitar's open low E.

Where exactly is "mud" on bass?

Most commonly 200–300 Hz, sometimes extending to 400 Hz. The problem is rarely the bass alone — it's the bass plus guitar low end, plus piano left hand, plus male vocal chest tone, all piling up in that 200–300 Hz region. A 2–3 dB broad cut around 250 Hz on one or two tracks usually opens up the mix. Cut before compression for best results.

How do I know if my speakers can actually play the low end?

Play the lowest few zones (20–60 Hz) on this tool with the sine wave. If you can't hear or feel anything, your speakers are rolled off there. Studio monitors typically reach 40–50 Hz; nearfield bookshelves often 50–70 Hz; laptops 100–150 Hz; phones 200+ Hz. The on-screen tone is real even when your speakers can't deliver it.

Why do square and sawtooth waves sound much louder than sine?

At equal amplitude, richer waveforms have higher perceived loudness because they contain harmonics across the spectrum. A square wave has odd harmonics 1/3, 1/5, 1/7, ... the amplitude of the fundamental; sawtooth has both odd and even at 1/n amplitudes. The tool auto-scales the gain per waveform so switching doesn't blast or vanish.

What is "cents" in the readout?

Cents are 1/100ths of an equal-tempered semitone. A note that's "+50 cents" is exactly halfway between two adjacent notes. Sliding the cursor between notes shows how many cents you're sharp or flat of the nearest note. Useful for tuning and for understanding microtonal intervals.

Is my microphone or audio being recorded?

No. This tool only generates sound (a pure waveform at the chosen frequency) using the Web Audio API and plays it through your speakers. It never requests microphone access, never records, and never uploads anything. Everything runs locally in your browser.

What frequency is the kick drum "punch" — and how do I EQ it?

A kick drum's sub punch sits at roughly 60–80 Hz, its body at 100–200 Hz, and its beater click/attack at 2–5 kHz. To add punch, boost 4–6 dB at 60–80 Hz with a bell curve; to control low-end build-up, cut narrowly around 200–300 Hz (the mud zone shared with bass guitar). Listen to 80 Hz on this tool before touching the EQ — it trains your ears to identify the exact region.

Should I high-pass filter bass guitar in a mix?

Yes, gently. A high-pass filter (HPF) at 20–30 Hz removes inaudible sub-rumble, DC offset, and microphone handling noise that wastes headroom and can stress speakers. For 4-string bass, cutting below 30–35 Hz loses nothing musical. For 5-string bass (B0 = 30.87 Hz) set the HPF lower, around 25 Hz, or use a very gentle 6 dB/octave slope so the note's fundamental survives. Never high-pass higher than the lowest fundamental your instrument actually plays.

What does "low end translation" mean and how do I check it?

Low-end translation is how well the bass and kick drum hold up across different playback systems — headphones, car stereos, phone speakers — where the low-end response varies wildly. Use this tool to identify where your mix's bass energy actually lives, then check how much of it survives on a small speaker (which typically rolls off below 100–150 Hz). If the kick and bass only live at 40–60 Hz, they'll disappear on phones. The fix is ensuring there's harmonic energy at 80–200 Hz (body) alongside the sub.

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