Thanks Garfield, the deep tone is straight out of the sine wave output on the Make Noise STO with slow clocked Turing Machine taking gates from the Noise Engineering Bin Seq and straight to mixer on a mono channel. No midi keyboard or anything.
I should have Tamed the levels a bit before recording!!
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.