That one is excellent, and it is not simple!
The part i can explain is these
Shapes: saw-wave in phase-mid-range
Filtering. This is very strongly Low-passed-filtered. I would also say that it has limited resonance, so that is the filter-settings.
EQ : is used to really enhance the deep areas, and to exclude higher areas
LFO...
Ouch
This is some clever stuff!
It sounds like a 'galloping' sound, but then it goes 'flat', and that happens very precise, and fast!
I wonder if an automation on the LFO could achieve that super sound, but how to make that, and with such precision..
Alternatively, it is the actual Hz oscillation, but that would be even more technical. That is simply just a masterpiece of sound engineering!
-and maby some high-end bass-synth like Massive
Write to him and ask :P