[speakon]

the process in Neyrincks mix 51 is to buss the output of every track (you want to mix in surround) to the input of the 5.1 mixer plugin that gets inserted on any aux track. Surround panners are inserted on aux copies of all tracks so they are post the faders.

seeing as spat has the panning and mixing in one package would it not be simply a process of inserting multiple copies the spat plugin (as an insert) on individual tracks rather than bussing the output of all tracks to one instance of spat?