Drum and Bass Mixing: How to Mix DnB That Hits at 174 BPM

Drum and bass mixing is unforgiving. At 174 BPM there is nowhere for a weak drum hit or a muddy bassline to hide. The genre is built on two elements, drums and bass, occupying the same second of audio over and over again, and if they are not carved into their own space, the whole tune turns to soup. The good news is that DnB mixing follows a fairly consistent set of principles, and once you internalise them, your mixdowns improve dramatically.

This guide covers how to mix drum and bass from the ground up: why tempo changes everything, drum bus processing, separating sub from mid bass, sidechaining, headroom, and how to use reference tracks properly.

Why 174 BPM Changes How You Mix

Tempo is not just a creative choice, it is a mixing constraint. At 174 BPM, a bar lasts about 1.4 seconds. Kicks, snares and bass notes arrive so quickly that any overlap between sounds becomes constant rather than occasional.

Three practical consequences follow:

• Tails must be short. A kick with a long sub tail at 174 BPM will still be ringing when the bass note lands. Tighten kick decay and shorten reverb tails on drums, or use pre-delay and gating so ambience does not smear the groove.
• Transients carry the energy. With so little space between hits, the attack portion of each drum does most of the work. Protect transients at every stage; every clumsy compressor kills a bit of the punch.
• Small timing and phase issues stack up. Layered drum breaks that are slightly out of phase sound weak at speed. Zoom in, align your layers, and flip polarity to check which setting sounds fuller.

Drum Bus Processing

DnB drums are usually a combination of a hard-hitting one-shot kick and snare, layered with one or more classic breaks for texture and movement. Route all of it to a single drum bus so you can process the kit as one instrument.

A dependable drum bus chain

• EQ first. High-pass the break layers so they are not adding low-end rumble underneath your main kick. Cut boxiness in the 200 to 500 Hz region if the bus sounds cluttered, and add a little presence around 2 to 5 kHz if the snare needs bite.
• Glue compression. A bus compressor with a slow attack (10 to 30 ms) and fast release, doing 1 to 3 dB of gain reduction, ties the layers together while letting the transients through. The slow attack is the important part.
• Saturation or clipping. Gentle saturation adds density and perceived loudness without flattening the hits. Many DnB producers clip the drum bus lightly, shaving the very tips of kick and snare peaks, which lets the drums sit louder in the mix at the same peak level.
• Parallel compression for weight. Send the drums to a heavily compressed parallel channel and blend it underneath. You keep the transients from the dry path and gain sustain and body from the crushed one. This is a classic way to make breaks sound thick without losing snap.

Get the kick and snare loud and confident before anything else. A useful habit is to mix drums and bass together first until that core feels finished, then fit music, pads and vocals around them at lower levels. In DnB, everything else is decoration.

Sub Bass vs Mid Bass: Separate Jobs, Separate Lanes

The most important structural decision in a DnB mixdown is treating sub bass and mid bass as two different instruments, even when they play the same notes.

The sub layer

The sub carries the fundamental, usually somewhere between 30 and 80 Hz, and its job is weight, not character. Keep it simple and keep it controlled:

• Use a clean sine or lightly saturated sub, mono, with no stereo effects and little or no reverb.
• Keep the level consistent. Sustained sub notes should sit at a steady level from note to note; wobbly sub levels are one of the most common giveaways of an amateur mixdown. Careful gain automation or gentle compression on the sub channel helps.
• Watch note pitch against the key of the tune. A sub that drifts too low (below roughly 30 Hz) stops being audible energy and just eats headroom.

The mid bass layer

The mid bass, your Reese, neuro growl or bassline patch, lives roughly from 100 Hz up into the low mids and highs. This is where the character, movement and stereo interest belong. High-pass the mid bass layer so it does not fight the sub for the fundamental, typically somewhere around 90 to 120 Hz depending on the sound. The sub owns everything below the crossover; the mid bass owns everything above it.

This split solves the classic DnB problem of a bassline that sounds huge on monitors and disappears on a phone. The sub gives you the physical weight on big systems, and the mid bass keeps the bassline audible on small speakers that cannot reproduce the fundamental at all. Well-designed patches make this far easier, which is exactly how the sounds in the PresetDrive Serum preset packs are built: character in the mids, with room left for a clean sub underneath.

Sidechain: Making Kick and Sub Coexist

The kick and the sub bass both want the same few hertz at the same moment. Sidechain compression resolves the argument: the kick triggers a quick dip in the sub, the kick's transient punches through, and the sub swells straight back.

At 174 BPM the timing has to be tight. Long, pumping sidechain curves that sound great in house music sound seasick in DnB. Use a fast attack, a release around 60 to 120 ms so the sub has fully recovered before the next hit, and only 2 to 4 dB of gain reduction. The dip should be felt, not heard.

Alternatives worth knowing:

• Volume-shaping tools (envelope shapers and ducking plugins) give you a drawn curve that is more precise than a compressor and identical every hit.
• Arrangement-level solutions are often the cleanest of all: shorten the kick, or programme the bassline so sustained sub notes do not land exactly on the kick. If they never collide, nothing needs to duck.
• Multiband sidechain ducks only the low band of the bass under the kick, leaving the mid bass character untouched. Useful when the bassline needs to feel continuous.

Headroom: Mix Quiet, Master Loud

Loudness comes at the end of the process, not during the mixdown. Keep your master bus peaking around -6 dB while you mix, with no limiter on it, and turn your monitors up instead of your channels. Mixing into a limiter hides balance problems, because the limiter is constantly reshaping whatever is loudest, and in DnB that means it is quietly ruining your drums while you work.

Gain-stage from the source: set levels so individual channels are not slamming into plugins, use trim or clip gain rather than pushing faders to the top, and let the mix breathe. A clean, balanced mixdown at -6 dB will get louder in mastering than a crushed one, because the mastering chain has real transients left to work with. If you want a rough feel for the finished loudness during production, put a limiter on temporarily, listen, then bypass it again before making mix decisions.

Using Reference Tracks Properly

Reference tracks are the fastest way to improve drum and bass mixing, and most producers use them wrong. The point is not to copy a tune; it is to borrow calibrated ears.

• Pick two or three professionally released DnB tracks in the same style as yours: a liquid roller referenced against neurofunk will just confuse you.
• Level-match before comparing. Commercial releases are mastered loud; your mixdown at -6 dB will lose any unmatched comparison purely on loudness. Pull the reference down until both feel equally loud, then compare.
• Compare one thing at a time. How loud is the snare against the bass? How bright are the hats? How much sub is there really? Where does the low end stop being stereo? A/B in short bursts of a few seconds; long listens let your ears adapt and hide the differences.
• Check in mono and on small speakers with the reference alongside. If the reference bassline survives a phone speaker and yours does not, your mid bass needs attention, not your sub.

Load references into your project on a muted channel, or use a dedicated referencing plugin, so switching takes one click. The harder it is to A/B, the less you will do it.

A DnB Mixdown Checklist

• Drums and bass mixed first, everything else fitted around them
• Break layers high-passed, aligned and glued on a drum bus
• Sub mono, consistent in level, owning everything below about 100 Hz
• Mid bass high-passed, carrying the character and surviving small speakers
• Tight sidechain or arrangement keeping kick and sub out of each other's way
• Master bus clean and peaking around -6 dB, no limiter while mixing
• Level-matched references checked in stereo, in mono and on small speakers

Nail these fundamentals and the mastering stage becomes a formality rather than a rescue mission.