Creating Dubstep wobble-style bass lines in Logic

Dubstep is all the rage with its big wobble sounds. This pseudo style is a mixture of Dub Reggae, 2-Step, Grime with elements of Drum 'n Bass. Join Gary Hiebner as he shakes it up in Logic Pro.  

What really stands out when listening to Dubstep are those huge "wobble" bass lines. They can actually be created quite easily using Logic's ES2 Virtual Instrument and, with some automation added to the recipe, you can really create some interesting DubStep synth lines in your productions.

Step 1 - Sounds with the ES2

First instantiate the ES2 on a Software Instrument channel. Under the presets choose the Analog Saw Init under the 12 Tutorial settings sub-menu. This is a basic Saw wave synth sound which we will build on to create our DubStep bass lines.

Figure 1 - Analog Saw Preset

Here I have created a very simple bass line because most Dubstep bass lines are in fact very simple in nature. It's really the LFO automation that fills up the bass line track and creates the interest.

Figure 2 - Bass Line Part

Audio Example of Analog Saw Bass:

Step 2 - Creating the "Wobble"

Next we are going to create those wobble sounds that are heard in Dubstep synth lines. These are created by using the ES2's LFO's and the ES2's Modulation Matrix menu. The Modulation Matrix menu is a very handy area in the ES2, and can really bring your sounds to life while adding some interesting movement too. First let's choose what we want the LFO to modulate. In the Modulation Matrix on one of the channels, in the Target choose: Cut 1+2. This will modulate both the cutoffs of Envelope 1 and 2. In the Source field choose LFO2. We are choosing LFO, because it allows you to change the rate divisions of the tempo such as 1/8 and 1/16T notes.

Figure 3 - Selecting Cut1+2

Set the LFO2 here to ¼ notes. Here you can hear a slight wobble to the bass line.

Figure 4 - LFO2

Example of ES2 with LFO:

Let's spice up the bass sound as it sounds a bit flat. So, activate the other oscillators and choose some different waveforms. For Oscillator 2 choose a square waveform and detune it down an octave to add more low-end to the bass sound. On Oscillator 3 choose the variant Saw waveform. In the Triangle Mix window, mix the three sounds till you have found a sound you like.

Figure 5 - Triangle Mixer

Example of Analog Saw with extra Oscillators:

Step 3 - get those Wobbles Moving

Now it's time to add some automation to the LFO to accentuate those "wobbles".

Figure 6 - Select LFO2 Rate

Open up the Automation lane (View > Track Automation), and then choose the LFO2 Rate parameter from the ES2's Track Automation drop-down menu. Next, draw in some automation while you are listening to the bass and notice how you can change the rate of those wobbles. These wobbles don't need to repeat themselves. Dubstep allows you to be quite experimental, so you can go crazy with the automation.

Figure 7 - Automate LFO2

Example of LFO2 Wobble with Automation:

Step 4 - Automate that Pitch

You can take it one step further and even automate the pitch of your bass to create even more interest with the sound. In the Modulation window we have chosen Pitch123 from the Target menu to pitch all the Oscillators (1,2 and 3), and we have chosen LFO1 this time as the source to modulate the pitch. You can go crazy with this. Use the Touch automation mode and move the slider in the modulation matrix to draw in the automation while the track is playing. Take a look at Mo Volans' article to get a better grip of Logic's different automation modes.

Figure 8 - R4 Intensity Via

This alters the ES2's Router R4 Intensity via automation field:

Figure 9 - R4 Intensity Via Automation

Audio Example of Bass with Pitch Automation:

Step 5 - Double and Dirty up that Wobble Bass

To dirty up this bass sound more, duplicate the bass channel strip with the same settings. Then add some pedal boards distortion pedals, the Overdrive effect, and Ring Shifter plug-in to really grime up this sound. Mix the two bass sounds together until the levels of each sound good.

Figure 10 - Double Bass

Example of Doubled ES2 Bass:

Step 6 - add The Beat

Dubstep beats are quite simple. The snares are more often than not on the 3rd and 7th. Here is the beat I created. These beats may be simple, but they allow the wobble bass lines to be busy and crazy, and they open up space in the mix for these Dubstep lines.

Example of DubStep Loop:

And now here is the Dubstep Loop and Grimey Wobble Bass Line together:

If you wish to get deeper into the ES2, check out Steve Horlick's tutorial on the ES2 Exposed

If you wish to polish up your electronic productions also check out Olav Basoski's tutorials on Producing Electronic Dance Music.

So get in there and wobble and grime up those bass lines. Have fun!

Gary Hiebner is an enthusiastic South African Sound Designer and Apple Tech Head! Gary has been involved in the South African music industry for the decade, and in this time has also been involved in the sound design and music production for many advertising agencies and media houses. Gary is a devoted Logic and Ableton user, but he al... Read More


Nice one, Gary! I just applied this technique to a project I'm working on. Thanks for the clear instructions and for opening a door to a genre that Im becoming more and more interested in.
Awesome! This information was exactly what I needed!
Gary Hiebner
Great, Glad it was helpful

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