Assigning midi CCs to multipe controls

[Macrostructure]

Is there any way of sending one knob's CC data to two controls in Live? or of linking controls to each other?

For instance making a three band crossfader like the redsound mixer, with a crossfader for bass, mid and treble, using the EQ three module with each control inversely mapped to the other and controlled by three faders on an external controller?

ms