Why do my kick and bass clash?

Both put most of their energy into the same low octaves, usually somewhere between 40 and 160 Hz, and they often hit at the same moments. When two sounds are loud in the same octave at the same time, the ear can't separate them, so the low end turns into one blurred thump and gets louder without getting clearer.

Should the kick or the bass take the sub?

Pick one owner per octave. A common split is a sub-heavy bass with a kick that lives a little higher (its punch around 60–100 Hz and its click above), or a big sub kick with a bass that sits higher. Either works; trying to have both full in the same octave is what clashes.

Do I need sidechain compression to fix kick and bass?

Not always. Sidechain ducking fixes the moments where both hit together, which is the classic case in four-on-the-floor music. If they clash only in some bars, or only because both are too full in the same octave, EQ carving or an arrangement change can be cleaner.

How do I know which bars the clash happens in?

Masking only matters where both parts play loudly in the same octave at once. Solo the two tracks and loop the sections one by one, or use an analyzer that compares the tracks over time. monody's Finish view lists the bars for each clash it finds.

Should I tune my kick to the key of the song?

It helps when the kick has a clear pitched tail, as long 808-style kicks do. A kick tuned to the root (or the fifth) sits with the bassline instead of beating against it. Short, clicky kicks matter less.

Mixing and mastering

Kick and bass clashing? Find the octave and the bars where it happens

Why kick and bass mask each other, how to find the exact octave and the bars where they collide, and fixes that only act there (EQ carving, dynamic EQ, ducking, arrangement, tuning the kick).

1 October 20265 min read

The short answer. Kick and bass clash when both are loud in the same octave at the same time. Find the octave (usually 40–80 or 80–160 Hz), find the bars where both play there, then fix only that spot: give one of them the octave, carve a little EQ room in the other, or duck the bass when the kick hits. A fix that runs everywhere solves a problem that only exists in some places.

Most "how to mix kick and bass" advice is the same five tips: EQ, sidechain, dynamic EQ, mono, layer. They're all real tools. What the tips skip is the diagnosis: where is the clash, and when? Answer those first and the right tool is usually obvious.

What masking is

Masking is when one sound makes another harder to hear because both have energy in the same frequency range at the same moment. In the low end it's worse than anywhere else:

Kick and bass both put most of their energy below 200 Hz, often in the same octave.
Low frequencies are long. A 50 Hz cycle takes 20 ms, so a bass note and a kick decay overlap for a while even when they don't start together.
Club systems and headphones show the low end very differently, so a clash that's polite on laptop speakers can turn into a wall on a big system.

The result: the low end gets louder without getting clearer. You push the kick up to hear it, the bass disappears, you push the bass up, and the meter fills with mud.

Step 1: find the octave

Think in octaves, not single frequencies:

Octave	Range	What usually lives there
Sub-bass	20–40 Hz	Felt more than heard; a lot of sub bass, long kick tails
Sub	40–80 Hz	Kick body, sub bass fundamentals
Bass	80–160 Hz	Kick punch, bass fundamentals and first harmonics
Upper bass	160–315 Hz	Bass harmonics, kick "box", low synths

Solo the kick and bass together. Sweep a narrow EQ boost slowly through 40–200 Hz on the mix bus (listen only, don't keep it) and note where the pair suddenly sounds thick or flappy. Or put an analyzer on each track and see where each puts its peak energy. If both have their biggest bump in the same octave, that's your clash.

Step 2: find the bars

A clash only matters where both parts are loud there at once. That depends on the arrangement:

A bass that plays between kicks (offbeat bass in house, rolling bass in techno) may barely overlap the kick.
A sustained sub under a four-on-the-floor kick overlaps on every beat.
A bass that only comes in for the drop clashes in the drop, not the intro.

Loop each section and listen to the two tracks alone. Write down the bars where it gets thick. That list decides the fix: a clash in 8 bars of a 128-bar track doesn't need a fix that runs for all 128.

Step 3: fix it there, and only there

Give the octave to one of them

The cleanest fix is a decision. One part owns the sub octave, the other steps up:

Sub-heavy bass, tighter kick: high-pass or shelve the kick's lowest octave a little and let its punch (around 60–100 Hz) and click do the work.
Big kick, higher bass: high-pass the bass so its fundamentals start above the kick's body, and let the bass's harmonics carry the line.

Carve a little EQ room

If both need to stay full, cut a few dB in the shared octave on the part that matters less there, and leave the other one's body alone. A moderate bell (around Q 1.4) of 2–4 dB is usually enough. Big, narrow cuts tend to sound like a hole.

Duck the bass when the kick hits

When the clash is about timing (both hit together, every beat), ducking is the classic fix: the bass dips for a few milliseconds each time the kick hits, then comes back. Usually that's a compressor on the bass keyed from the kick (sidechain compression), or a volume envelope locked to the beat. For a smaller, frequency-limited version, a dynamic EQ on the bass can dip only the shared octave when the kick plays.

Change the arrangement

Sometimes the fix is notes, not processing:

Move the bass off the kick: offbeat bass, or let the kick's decay finish before the bass note starts.
Shorten long bass notes in the busiest bars.
Drop the bass out for a bar before the drop, so the drop has somewhere to land.

Tune the kick

If the kick has a pitched tail (808-style kicks especially), tune it to the song's root or fifth. A kick a semitone off the bass note beats against it, and no EQ fixes a pitch clash.

Checking the fix

Listen at a moderate level, then in mono, then on a second system. Check the busy bars you wrote down. Compare against a finished track in your genre, matched in loudness so the louder one doesn't win by being louder. If the low end got clearer and the kick still hits, you're done. If it got clearer but weaker, you cut too much.

How monody finds it

monody's Finish view renders the song and checks every pair of tracks (not buses) octave by octave. It flags a pair when:

each track carries at least 15% of its own energy in that octave;
both are loud there (at least 15% of that octave's total) at the same moments, in at least 35% of the moments either one plays there;
and that adds up to at least four seconds.

The finding names both tracks, the octave, the bars where it happens and how often they overlap. It also suggests which track gives way: the one for which that octave matters less. "Carve room" hands it to the assistant, which makes the EQ edit in your session. Everything it changes is marked, you flip Before/After to hear the difference, and the Finish view measures again to show whether the overlap dropped.

What monody doesn't have yet: sidechain routing. Keying a compressor from the kick is on the roadmap. Until then, its Auto Pan with a saw shape, synced to tempo, gives a sidechain-style pump on the bass.

Checked on 1 October 2026.

Questions

Why do my kick and bass clash?: Both put most of their energy into the same low octaves, usually somewhere between 40 and 160 Hz, and they often hit at the same moments. When two sounds are loud in the same octave at the same time, the ear can't separate them, so the low end turns into one blurred thump and gets louder without getting clearer.
Should the kick or the bass take the sub?: Pick one owner per octave. A common split is a sub-heavy bass with a kick that lives a little higher (its punch around 60–100 Hz and its click above), or a big sub kick with a bass that sits higher. Either works; trying to have both full in the same octave is what clashes.
Do I need sidechain compression to fix kick and bass?: Not always. Sidechain ducking fixes the moments where both hit together, which is the classic case in four-on-the-floor music. If they clash only in some bars, or only because both are too full in the same octave, EQ carving or an arrangement change can be cleaner.
How do I know which bars the clash happens in?: Masking only matters where both parts play loudly in the same octave at once. Solo the two tracks and loop the sections one by one, or use an analyzer that compares the tracks over time. monody's Finish view lists the bars for each clash it finds.
Should I tune my kick to the key of the song?: It helps when the kick has a clear pitched tail, as long 808-style kicks do. A kick tuned to the root (or the fifth) sits with the bassline instead of beating against it. Short, clicky kicks matter less.