The dry signal on the far left can be sent through the filter by pressing the "To Filter" button. All of the delays are sent to the filter by default. If you open the device panel you'll find a LFO that can control the filter cutoff.
Uses Reason 12 plus stock and free modules
kHs Delay
kHs Filter
Blamsoft Polymodular audio splitter File is also here:
Video's here: