Well...

The short answer is no.

I managed to control the system via an AC11 and its serial port using speaker RS232 commands. Even used the new "EA" command without actually knowing the exact syntax.

End result: managed to set the master speaker to EBA=SL (SpeakerLink control from processor) from previously EBA=Y, as well as activating Position = SL, etc. using the other new commands.

If I knew the syntax I might do better...

The main problem though is that the AC11 does not distribute the commands to the other speakers only to the master speaker. Consequently the approach does not work.

/H

1: 861v8+ID41, HD621, 2xDSP8000SE, DSP7200HC SE, 4xDSP33s, 2xAC12s, Sony VW500ES 4K projector, 132" 2.35:1 screen, SMT room treatment, Oppo103D, Roku 3, Plex, Sonos(wimp lossless).
2: 861v4.8+ID40, HD621, DSP5200SL (BRG), DSP5200HCSL, DSP3100s, AC11, D2500, Roku 3: Plex, Sonos.
4: MC200(Reviver), DSP3100s, SW1600, Sonos.
5: G68, DSP3100, DSP5000C.