A comparator and a vca (and perhaps a buffered mult) will get you there. ladik makes a great comparator which allows you to set a threshold manually, and sends various gates depending on the relationship of the threshold and input voltages.
In your example, route the cutoff cv thru a vca that will be opened by the 'greater than' gate output of the comparator.
Making one oversized rack and subdividing it into 'actual racks' with largish blank panels has been helpful to me for simultaneous multi-case organization in the past.
Knowing that i can copy/paste between browser windows will make it even more effective next time (in 'saving' the results to individual racks).
Big ups to @sceledra for carefully packing and quickly shipping a Soundmachines Ls1 my way. Tempted to get his Lp1, if someone doesn't beat me to it!
