I have a setup called “Cinema” which consists of an Arc, Sub and 2x Play 1s.
My Logitech Harmony picks this up on the network as a device, and it’s able to control the volume on it when I go into this device.
However when I create an Activity (and include “Cinema” as one of the devices, along with the projector and, say, my Apple TV) I’m unable to adjust the volume in this Activity.
My Arc is connected via Optical due to lack of ARC on my projector, so that’s not an option for control.
I mainly use the Harmony iPhone app to control. On this, the volume buttons are greyed out.
On the Harmony Remote, you’re able to specify what you want the hard volume buttons to do, and on this I can successfully map them to Sonos “Cinema” and get the desired effect.
Any tips on how to fix the iPhone App issue? It might be relevant to know that I’m on Mac OSX Catalina, and the Harmony software is incompatible with this (!). I have no other computers to install the desktop software on, so I’m stuck using the iPhone app to configure.