Dave Smith Instruments SYNTHESIZERS

hi! this is my first post here :)

http://www.youtube.com/watch?v=gupPWGx0hys 

time 2.26: the descending sound. 

does anybody had an idea? 

this kind on sounds are always present on jarre's tracks; they are typically made by EMS VCS3 but in my opinion they should be playable by evolver too. 
or not...?! 

regards