Hello Eric,
right now I'm just using a mixdown for the rear speakers on the non surround Bovenkerk. So instead of a mixdown, can I set up a second speaker group for the rear that duplicates the first group that I'm using for the front, sending / cycling the same notes?
A given pipe 'rank' entry (being an entry from the left-hand browse list on the 'Organ | Load organ, adjusting rank audio output routing' screen) can be routed to only one group (although you can split the bass part of the rank off).
So you can't route it to a 'front' cyclic group and a separate 'rear' cyclic group simultaneously.
However, you could conceivably create a separate 'rear' aux mix-down output for each individual logical output in your 'front' group, and mix down the audio from each front logical output just to its corresponding rear logical output. That would effectively duplicate the signal from each front speaker to its corresponding rear speaker.
Hope that helps.
Best regards, Martin.
Hauptwerk software designer/developer, Milan Digital Audio.