Your lack of volume issue with the PRS80 in network mode might have been the level for each speaker. You have -25 to 0 for mids and tweets and -24 to +6 for the sub. Also SLA might need to be moved up a few clicks, I usually run mine at +2 or +3.
I've been running active with PA stuff for several years, makes it very easy to swap mids/tweets and get them dialed in properly. I run TA in the daily but not in the demo ride.