Hi,
it is possible to use 2xAB168 with QU.
Have you pluged in the Cat5 cables in the stageboxes in a correct way?
Qu32 (dSnake socket) -> first AB168 (dsnake socket as input) -> first AB168 (expander socket as output) -> second AB168 (dsnake socket ans input)?
Then you should have on QU32:
inputchannel 1-16 (first stagebox)
inputchannel 17-32 (second stagebpox)
outputs 1-8 (first stagebox)
outputs 9-16 (second stagebox)
check the I/O page (tab dSnakeIn and dSnakeOut) if all channels matches.
Use the Preamp screen Fn key Source page to choose either the local (rear panel) socket or a remote (dSNAKE) socket for each channel source.
Then it should work properly 🙂
Best regards,
Sascha