MOTM thunder w/echoes: www.synthtech.com/demo/motm_thunder.mp3 Pink Noise from MOTM-101 feeding a MOTM-420 VCF set very low (~40Hz), which generated the control voltage into the FM input of a MOTM-440 LP VCF. White and Pink noise enveloped from an Encore UEG is mixed and fed to the MOTM-440. Paul S.