This is a nuisance that I've been having, and I wonder if there is a way to resolve it with a 'default' setting of some sort.
I often watch programs or shows using my Apple TV+ subscription on my iMac (not the Apple TV hardware, the TV service using the app).
When I'm watching a program or movie, the selection for audio output appears on the lower left of the screen and you can chose between various AirPlay devices.
I have two HomePod speakers as a stereo pair, placed at both sides of my iMac, so that is my preferred audio output.
Whenever I listen to something using the Apple TV app on my iMac, I need to select the HomePod speakers for the audio output. Default is always the internal iMac speaker.
Once I've finished watching one program or movie, when I start the next then I have to again select the HomePod speakers for sound output. The output has switched back to the iMac speaker.
Seems to me that I should be able to set up the sound output for TV+ to the HomePods as default, but I don't see any way to do that.
My software versions are all the most current - macOS 10.15.4.
(Using the HomePods with the iMac is still less than perfect as a general comment. For one thing, even though the two speakers are set up as a stereo pair, on my iMac sound preferences, they are listed separately and it isn't possible to select them as paired. I've been expecting Apple to improve this every time a new version of macOS is released, but so far it hasn't happened!)
I often watch programs or shows using my Apple TV+ subscription on my iMac (not the Apple TV hardware, the TV service using the app).
When I'm watching a program or movie, the selection for audio output appears on the lower left of the screen and you can chose between various AirPlay devices.
I have two HomePod speakers as a stereo pair, placed at both sides of my iMac, so that is my preferred audio output.
Whenever I listen to something using the Apple TV app on my iMac, I need to select the HomePod speakers for the audio output. Default is always the internal iMac speaker.
Once I've finished watching one program or movie, when I start the next then I have to again select the HomePod speakers for sound output. The output has switched back to the iMac speaker.
Seems to me that I should be able to set up the sound output for TV+ to the HomePods as default, but I don't see any way to do that.
My software versions are all the most current - macOS 10.15.4.
(Using the HomePods with the iMac is still less than perfect as a general comment. For one thing, even though the two speakers are set up as a stereo pair, on my iMac sound preferences, they are listed separately and it isn't possible to select them as paired. I've been expecting Apple to improve this every time a new version of macOS is released, but so far it hasn't happened!)