Originally Posted by Prideb4thefall
In my original post I referred to Google's VAD as 'Google Assistants' when I should have been calling them Google Home Minis. Sorry about that. I've also stumbled across a few threads with references to integrating Chromecast Ultras into their WHA setups. So, I might be back to my original plan of using Chromecast or CC Ultra devices for audio transfer. Still looking for opinions on using Google-tech in a WHA application.
You can use the regular Chromecast in a WHA setup.
The Ultras are overkill for a WHA setup.
Google updated the regular Chromecasts in Oct of 2018 so that one could cast music to them and group with other Chromecasts.
I've done it in my setup and it works very well.
I have a 12 zone Chromecast system with 6 zones of Chromecasts connected to a WHA amp which is connected to in-ceiling speakers and 7 zones which contain speakers with Chromecast built-in.
In the thread in the link below I laid out several steps one should follow to create a WHA using Chromecast.
I have Google Home minis in each room in my home including the master bathroom as well as a Google Home Hub in the kitchen.
All of the Home devices work very with Chromecast in terms of controlling them in a WHA setup.
I'd go one step further and say that using Routines in the Google Home app to create scenes or automations that involve Chromecasts in a WHA setup is very good.
I created a Good Morning scene that turns on certain lights, the living room AV system and starts a Spotify stream in all 12 zones of a Joyce Cooling jazz radio playlist I created in Spotify.
You can set a specific day and time for the routine to be ran, but you can also use your voice to kick off the routine by asking one of the Home devices.
When Google enables the ability to control window blinds in the Home app, add my window blinds to the Good Morning routine so that the blinds will open at the same time that the other things are taking place in the routine.
I also have a Google routine that will play music in all of my zones including the two outdoor zones when I'm out of town. The music turns on and off at certain times on different days.