How to make the bass mono below 120 Hz on an AI-generated track

Mono bass is a toggle under 07 · Master & export in the Club Ready Music studio, labelled Mono bass < 120 Hz and on by default. When the track is mastered, the audio is split at 120 Hz: the low band is summed to mono, the high band stays in stereo, and the two are recombined with a flat crossover so nothing is lost. The result is a sub that sits dead centre on club systems, which is what large mono-summed PA systems and vinyl-style cutting expect.

Steps

1. Understand what happens below 120 Hz

Club systems often run the subs in mono. If a track has stereo information in the sub, parts of it cancel when left and right are summed, and the kick and bass lose weight on the floor even though they sounded fine on headphones. Folding the low band to mono before you ever play the file removes that risk.

2. Find the toggle

In /studio, scroll to 07 · Master & export. The second line reads Mono bass < 120 Hz with a checkbox. On the mobile studio the toggle is on step 4, DJ settings. Leave it ticked for club music of any genre.

3. Leave it on for club, bass and techno music

House, tech house, techno, drum and bass, dubstep, trap and anything with a long sub note benefit. There is no downside on headphones or home speakers, because the fold affects only the lowest octave and a half.

4. Consider turning it off for a few cases

Untick it when you want the model's untouched stereo image: ambient and cinematic pieces with wide low drones, lo-fi with intentional stereo tape wobble, or a reference render you plan to process yourself in a DAW. For everything else, keep it on.

5. Pair it with the bass fade if you want one

The Bass fades last 8 bars toggle under 06 · DJ mix edit uses the same low band. With both on, the sub is mono and fades over the final eight bars of the outro so the next record's bass can take over. See fade the bass in the outro.

6. Render and check the low end

Press Generate. Both takes go through the same master, so the mono fold applies to each. Load the WAV or MP3 and check with a correlation meter or by summing to mono in your DJ software: the kick and sub should not lose level when you press the mono button.

Tips

• 120 Hz is a conventional crossover. It catches the sub and the fundamental of most kicks while leaving the upper bass harmonics in stereo. It is fixed in Club Ready Music; there is no slider.
• Mono bass helps the limiter. With the sub centred, the loudness pass under Volume level works on a tighter signal and the drop stays punchy at −8 or −6 LUFS; see set the loudness target.
• Describe the bass in words too. "Tight, centred sub bass" in the Vibe box encourages the model to write a low end that is already mostly mono.
• It does not change the key or BPM. The fold is a level operation on the low band, nothing else.
• Both download formats include it. The MP3 and the 24-bit WAV come from the same processed audio.

Common problems

The bass still disappears on the club system. The issue may be phase in the mid-bass above 120 Hz, or a very long sub note that the system cannot reproduce. Try the other take, or add "simple sub bass, no wide bass effects" to the brief and re-render.

The track sounds slightly different from the raw model preview. That is expected. The master applies loudness, hard start and the mono fold. The change below 120 Hz is small on headphones and large on a club system.

I turned it off and now the kick feels weaker. Stereo sub content cancels on mono systems. Turn Mono bass back on and re-render; the studio keeps all your other settings.

I want a different crossover frequency. Club Ready Music uses 120 Hz for every track. For a custom crossover, download the WAV and apply your own mid/side processing in a DAW.