Originally Posted by rhawke
Thanks, see my comments below!
too bad... come on google, work on this
Yeah, I don't understand why its hard, except that AVR's do typically add some amount of delay in processing, and without knowing what that delay is, you could get some things playing back slightly out of sync.
I have the extra channel so that should be fine but the downside with this is that I would only have the audio played on 2 speakers out of the 5.1 system. I was hoping to instead play the music on the left and right front as stereo and on the left and right back as stereo since those speakers are closer to the kitchen. For that I need the receiver to send the line in to all four speakers I assume?
Hmmm, most receivers will only play stereo on the front L and R, but maybe you can configure it to do that. If you only cared about the rear L and R, then you can just use the speaker switch on those two. If you have 6 zones in your amp, and you only have 4 being used for your 2.0 zones, you could simply double the solution and use your 2 extra zones on the amp with 2 switches and handle it that way, feeding both of them from a single chromecast audio using a Y splitter on the amp inputs.
Now, if you wanted to use your subwoofer etc.., you'd need the AVR in the loop, and then you could use that homeseer style solution.
But if I have a Chromecast Audio built-in receiver, I would assume it would come one by itself and that such a receiver would allow me to change the volume via Google Home and not require a remote to change the volume?[/B]
Nope, the reason the chromecast can do that is because of the CEC signals carried through the HDMI cabling. A chomecast audio only does analog L and R (plus the optical SPDIF), so no CEC signals and therefore no auto power on. You'd have to use an automation system approach like I outlined in the second post I did.
Great, this sounds like a great solution for any PC audio files I have. (if google were to remove the restriction from the point above, it would even be more useful).
yes, that works...
This mainly leaves the issue of not being able to distribute audio generated on the TV (e.g. Netflix or OTA TV). I don't need it to go through the Chromecast system since all wires / devices are in the the same location. I would just need to find a way to feed the TV out signal into the Multi-Amp without cutting off the CCAs. I realized that my idea with the BUS Line-in does not work well, because the switch is at the back and it is not designed for live switching. If I got 5 speaker switches (one for each zone on the Multi-Amp) + a device that allows me to distribute the TV line out signal into all 5 speaker switches, I would have what I want? But that seems too many pieces and cables for just the benefit of distributing TV audio ...
Well, there is an audio level version of that switch too: https://www.amazon.com/dp/B00L9YVL90..._t4_B00L9YVJ0Q
You can use this on the INPUTS to the multizone amp. It would seem a little tedious to do this for all your zones, and then you'd end up sending the TV audio to the whole house once it turned on, but I don't think that's what you want. If you only wanted the TV audio extended into the kitchen or one other location when the AVR turned on, you could use one of these switches, and then feed it with a second zone audio that most AVR's have for multiroom output. That is usually selectable by the remote control on the AVR, and could be activated when you wanted the TV audio sent to a certain room or set of rooms.
There is theoretically a way to send RCA level outputs to chromecasts by using the squeezebox LMS server, which can take audio inputs into a PC sound card, and cast the outputs to chromecast devices, but unless you are a software engineering type, I wouldn't try - it's a lot of config work and you need to set up the squeezebox server and use an app to control it, etc...
I am sure one of these days Google or someone else will make this work. I think the Google assistant Raspberry PI development kit would allow you to cast from the audio input of the PI, but that hasn't been packaged yet into a very easy to use setup. But I think someone will make that work at some point.