How to Mix Low End: The Six-Step System
Learn how to mix low end with a fixed-order system: mono below 120 Hz, one owner of the sub, exact high-pass numbers and a phone-speaker check that proves it.
Your kick sounds huge in solo. Your bassline sounds huge in solo. Together, the bottom of the mix turns into one grey lump: the kick vanishes, the bass booms, the track shrinks.
Low end is where most home mixes fail, because low frequencies carry the most energy and forgive the fewest mistakes. Most guides tell you "it depends on the track". It mostly doesn't.
Here is the low-end system we teach: six steps, fixed order, actual numbers. Don't skip the check at the end.
Step 1: Make Everything Mono Below 120 Hz
Stereo information below 120 Hz phase-cancels on club systems and anywhere the subs are summed, which is most places. Wide sub bass sounds impressive in headphones and disappears in the room.
Put a stereo utility or imager first on your master and set it to mono below 120 Hz. In Ableton Live that is Utility with Bass Mono at 120 Hz; most imagers have a settable crossover.
Wide, detuned bass genres can pull the crossover down to 100 Hz — never below 80 Hz, never off.
Step 2: Who Owns the Sub — Kick or Bass?
Between 30 and 60 Hz there is room for exactly one instrument.
Four-to-the-floor (house, techno, trance): the kick owns the sub. Its fundamental sits at 45–55 Hz; the bass plays above, with its weight at 80–120 Hz.
808 and halftime genres (dubstep, trap, drum and bass): the bass owns the sub and the kick becomes a punch instrument at 60–100 Hz.
Pick one. Sub-heavy kick plus sub-heavy bassline is the most common low-end mistake we see, and no plugin fixes it.
Step 3: Sidechain the One That Lost
The element that doesn't own the sub gets ducked by the one that does.
Starting settings: a compressor on the ducked element, sidechained from the owner. Ratio 4:1, attack under 1 ms, release 100–150 ms, threshold pulled down until the hits show 3–6 dB of gain reduction.
The gate: bounce eight bars and A/B against the unprocessed version. If kick and bass still blur, push gain reduction towards 6 dB before reaching for more EQ. Attack and release logic is in the essential compression guide.
Systems, NOT courses
Join the waiting list
+ get The Saturation System free
The full Producer OS range is coming soon. Join the list and download The Saturation System free to start using today.
Step 4: What Should You High-Pass, and Where?
Every channel that isn't kick or bass leaks rumble. Remove it at source with a high-pass filter, 12–24 dB per octave:
Source | High-pass at |
|---|---|
Vocals | 100 Hz |
Snares and claps | 100 Hz |
Guitars, keys, stabs | 120 Hz |
Percussion loops | 150 Hz |
Pads and synth chords | 200 Hz |
FX and reverb returns | 250 Hz |
Hi-hats and cymbals | 300 Hz |
These are starting points, not law. Sweep each filter upward as the track plays; if you hear no change, you have only removed rumble. More surgical moves live in the quick EQ guide.
Step 5: Tune the Sub to the Key
An out-of-key sub fights the whole track. Put the sub's fundamental on the root of your key: F is 43.7 Hz, G is 49 Hz, A is 55 Hz. The 40–55 Hz window is the usable sub range for club music; roots below E (41 Hz) work better an octave up. Tune the kick's tail to the same note, or at least into the scale.
The Gate: Does It Pass the Phone Speaker Test?
Bounce the track and play it on a phone speaker. Phones reproduce almost nothing below 400 Hz, so the sub is gone. Can you still follow the bassline?
If yes, the harmonics are doing their job and the low end is finished.
If the bassline vanishes, add saturation to the bass, not volume. Gentle saturation on a 50 Hz sub generates harmonics at 100, 150 and 200 Hz — the region small speakers actually play. Which type to use is in the quick saturation guide. Re-bounce and re-test until the bassline survives.
If the whole track sounds small rather than just the bass, the problem is upstream — start with why your productions sound thin.
Real-World Insight from Future Sound Academy
Almost every mix that arrives with "muddy low end" in the notes has the same three faults: a stereo sub, two instruments fighting for 50 Hz, and forty channels with no high-pass filters. The fix is rarely clever. It is this order, applied honestly.
We also make clients check on more than one system — monitors, headphones and phones each lie differently, and our monitors vs headphones guide breaks down how. These six steps are the low-end section of The Mixdown System, the fixed-order mixdown process we've built our whole approach into, and the first thing we walk through in production masterclass sessions when a client's mixes won't translate.
Final Takeaway
Mono below 120 Hz, one owner of the sub, sidechain the loser, high-pass the rest, tune the root — then let a phone speaker tell the truth. Done in order, low end stops being a fight and becomes a checklist.
The artists who build you
Residents available
Matt Leigh
Founder & Lead Mentor
Techno /// House
Manchester, UK
MYTHM
Resident Producer · International Touring Artist
Dubstep /// Riddim
Atlanta, Georgia
Jordan Vale
DJ Performance Coach
DJ / Performance
Berlin, DE
View profile
