In headphones, your Serum 2 808 sounds enormous. Then the bounce hits a phone speaker and the low end is just gone. No bass, no knock, silence.
The cure isn’t some secret plugin chain bolted on after the synth. It’s the patch itself. Four things make a good 808: a clean core, a pitch click, saturation done right, and tuning that genuinely matches your song key.
Since 2022 I’ve made hundreds of 808 patches for our packs, including everything in our free Serum 2 808 presets. This is the exact process, numbers included.
Start With a Sine or Triangle Core
Init the patch, load the Default wavetable on Osc A. Position 1 gives you a pure sine – that’s your sub. Unison stays at 1, because detuned voices smear the fundamental and turn a hitting low end into a wobbling one.
If you want extra presence before touching any distortion, swap in a triangle. Same fundamental, but with odd harmonics on top, so it translates to small speakers even completely dry. The original TR-808 kick was nearly a sine, yet half the 808s in modern trap are actually triangle cores.
Put Osc A at Oct -1 so your MIDI lands in a comfortable range – most 808 basslines live between C1 and G1. And double-check the voicing: mono, one note at a time, no exceptions.
The Pitch Envelope Click
A bare sine has zero attack. That knock at the front of a real 808 is a rapid pitch drop, not the work of some transient plugin.
In Serum 2, drag Env 2 onto the coarse pitch of Osc A. Envelope settings: attack 0 ms, decay 60 ms, sustain 0. Modulation amount: +24 semitones. Every note now begins two octaves high and falls to pitch within 60 milliseconds. That fall is your knock.
You’ve got two dials to experiment with. Raising the amount to +36 semitones gives a harder, clickier attack. Stretching the decay toward 120 ms turns the knock into a lazy, booming drop – lovely at 130-140 BPM trap tempos, mud at anything faster.
This single modulation buys you more punch than anything you could strap on afterwards. Nail it before opening a single effect.
Saturation Is What Phone Speakers Actually Play
Physics says a phone speaker can’t reproduce 40 Hz. What it can push out are the harmonics at 80, 120, and 160 Hz – your brain reconstructs the missing fundamental from those. So distortion’s job here isn’t aggression at all. It’s harmonic generation.
My Serum 2 setup: load the Distortion effect, choose the Overdrive mode that arrived with version 2. Drive near 25%, mix at 50-70% so the clean sub keeps running underneath the grit. And since Serum 2 lets this live on its own FX bus, the distortion never bleeds into layers you add later.
Follow the distortion with a low-pass filter around 400 Hz to trim the fizzy top. The analog-style filter models are the right pick for this – which ones to grab is covered in our Serum 2 filters guide.
Know your limit, too. Once you’re past 50% drive with the mix high, that’s no longer an 808 – that’s bass design. Fun, sure, but it belongs in dubstep growl territory.
A quick sanity test: flip your monitors to mono, drop the volume way down, listen. If the bassline still tracks when it’s quiet and small, a phone won’t kill it.
Glide Settings for 808 Slides
Sliding 808s are half the genre by now. In Serum 2 it takes three settings: Mono on, Legato on, Portamento near 100 ms.
Legato is the one that matters. With it on, glide fires only when notes overlap – meaning the piano roll controls your slides. Overlap two notes and the 808 glides between them; leave a gap and it retriggers clean. Both behaviors, one patch.
Set the glide time to fit the style. Fast trap slides between nearby notes sit at 60-100 ms. Drill slides covering an octave want 200-300 ms, otherwise the movement reads as a chirp instead of a slide.
Tuning Your Serum 2 808 to the Key
An 808 that’s out of tune makes the entire track feel wrong, even when nobody can point at why. And in trap and drill the 808 is the bassline, so it must sit on the root notes of your key, properly tuned.
Check the patch itself first. Zero the pitch envelope amount temporarily, play C1 against a tuner or reference sine, and correct any drift with fine tune. A long pitch-click decay can drag the perceived pitch sharp – which is exactly why the click comes off before you tune.
Then choose your octave. This is the range I operate in:
| Note | Frequency | How it behaves |
|---|---|---|
| A0 | 27.5 Hz | Felt, not heard. Club systems only. |
| C1 | 32.7 Hz | The classic 808 default. |
| E1 | 41.2 Hz | Sub plus audible pitch. Safe zone. |
| G1 | 49.0 Hz | Punchy, still reads on laptops. |
| A1 | 55.0 Hz | Getting tonal, works for melodic 808s. |
| C2 | 65.4 Hz | More knock than sub. Phonk lives here. |
My rule of thumb: when the song key pulls the root under B0, jump up an octave. A 29 Hz fundamental impresses a subwoofer and nobody on earbuds.
Sustain vs Decay: Trap vs Drill
The amp envelope defines the genre as much as the notes themselves.
A trap 808 blooms and dies. Env 1: attack 0, decay around 3 seconds, sustain 0%, release 300 ms. Every hit rings and fades under its own power, so even short piano-roll notes come out long. That’s the classic sustained boom sitting under half-time hats at 140 BPM.
A drill 808 gets held instead of left to ring. Sustain up around 80-100%, decay tightened to roughly 1 second, release 150 ms. Note length in the piano roll now runs the show – and drill demands that, because those constant wide slides only land when note endings are precise.
Phonk lives somewhere else altogether: distorted, mid-heavy cowbell 808s that barely graze the sub. Different construction, different tuning – all broken down in the phonk Serum 2 tutorial.
Layer a Click With the Sample Oscillator
Sometimes the pitch-envelope knock alone won’t cut it and you need a genuine drum transient glued on. Serum 1 forced you to stack a sampler channel in the DAW for this. Serum 2’s Sample engine does it inside the patch.
Flip Osc B’s engine to Sample and drag in a short kick transient or rimshot – anything under 100 ms. Keytracking off, so the click holds one pitch regardless of the note played. Sit it 12-15 dB below the sine. That’s it – the click fires with every note, and glide keeps working since the sub layer owns all the pitch movement.
Of everything a Serum 2 808 improves over the old two-track layering routine, this is the biggest workflow win: one patch, one MIDI clip, slides and click together.
Prefer studying finished patches to building from init? Our Synopsis 808 preset pack runs this exact layering trick on roughly half its patches. There’s also a dedicated 808 folder among the 250+ patches in our free Serum 2 preset pack – open them, click every modulated knob, watch how the pieces connect.
Serum 2 808 FAQ
What note should I tune my 808 to?
Your song key’s root note, somewhere in the C1 to A1 octave. Key forces the root lower? Play it an octave up. And tune the patch with the pitch click disabled first, since the click throws off what a tuner reads.
Why does my 808 disappear on phone speakers?
Because a clean sine below roughly 100 Hz is invisible to a phone. Bring in saturation – Overdrive around 25% drive, 60% mix – so harmonics carry the note, then low-pass at 400 Hz to stop it going fizzy. Small speakers only ever play the harmonics.
How do I make 808 slides in Serum 2?
Mono on, Legato on, Portamento at 100 ms. From there, overlap notes in the piano roll wherever a slide belongs. Gapped notes retrigger normally; overlapped ones glide. For long drill-style slides, push portamento to 250 ms.
Do Serum 1 808 presets still work in Serum 2?
They do. Serum 2 opens Serum 1 presets, and Serum 1 owners upgrade free – details on the Xfer Records site. Old 808 patches load fine, though spending ten minutes rebuilding them with the Sample-oscillator click layer usually pays off. Want a broader starting library first? Here’s our roundup of the best Serum 2 bass presets.
Build One, Then Steal the Rest
Build a single Serum 2 808 from init using the steps above. After that, every preset you ever open will make sense, because it’s always the same five decisions with different numbers plugged in.
And for the shortcut: our free 250+ Serum 2 presets – 808s included, royalty-free, no catch. Pull the patches apart and study the construction.
I run Monosounds.studio and make the packs myself. Ten-plus years of producing, 97+ releases, 16,000+ downloads. Every Serum 2 preset we ship passes a CPU check on a mid-range laptop and gets used in a real track before release. If it does not survive a mix, it does not go in the pack.
More about Maxim & the studio →Looking for the packs themselves? Here is the whole Serum 2 catalogue — sorted by genre and by sound, with a demo on every one.
