We will start with the TAL ELEK7RO using a single sine wave oscillator.This is a great free synth and is ideal for producing silky smooth rounded sub.
We added a bit of warmth and control from the PSP Vintage Warmer, this will help to fill out the low end sonic spectrum, and will even out plus flatten any peaks. If you don’t have Vintage Warmer, and are using Ableton, then try the Dynamic Tube and the Saturator as inserts to drive the sound a bit. Speaking of peaks, the useful compressor from Ableton is in place here to further flatten any spikes, but the compressor will also raise any hollows in the sub spectrum too. The Auto Filter placed here is the last chance saloon to ensure full control of where the ‘low’ is at.