Exploring the solfeggio frequencies with part of the patch used for the 528 Hz Drone, I came up with one that combines 852 Hz with 285 Hz, plus 852/12 = 71 Hz.
The diagram is one typically found on the internet when searching for solfeggio frequencies. This one is from the following blog, which I know nothing about, but want to credit for the image.
The recording was made plain with no post processing and involved no knob twiddling but only LFOs.
