Basically what I understood, for the Shimmer Reverb you need to stack different levels of effects:
- Delay + Feedback
- Pitch Shift
- Reverb + Chorus
I started with the BLDRUNNER SubSynth preset and gave it a wet reverb with everything on max.
Then I took a modular and used this as Machine Input (Send Notes ON) and mixed its Stereo signal on each side with a FM-Pair, both 1 Octave higher , detuned a little bit against each other, added a little bit of feedback and the DADSR Envelope set to a small Delay, a little bit Attack and Max Release.
I routed the output over a Resonance (2x) Filter (because stereo), with lower Cutoff and a bit higher Resonance to dillute the sound a bit.
Finally I added again a wet Reverb and a Chorus in the Effects section.
It is already quite ok, but I am not fully satisfied with it. Maybe someone has an idea how to improve it, especially since the modular can route polyphonic signals, but the mixed in FM-Pair is still monophonic, so playing chords is painful. If there was a way to cut a specific note out of a played chord, I would let multiple modulars handle single notes of the chord and mix them together later. But I haven't found a way to do it.