I tried to connect multiple bluetooth speakers and get audio from all of them on Raspberry Pi, but no success. This is very simple with Audio MIDI Setup software on macOS.
Steps for Stereo Configuration (Basic Setup):
1. Connect all bluetooth speakers to your Mac.
2. Open the ‘Audio MIDI Setup’ software.
3. Create a ‘Multi-Output Device’ by clicking the + sign on the bottom left corner.
4. Set it as default sound output by clicking the volume icon on on the top bar.
5. Have fun!
Steps for Surround Sound (Advanced Setup):
1. Follow the steps 1 & 2 above.
2. Create a ‘Aggregate Device’ by clicking the + sign on the bottom left corner.
3. Configure your speakers.
I connected 3 bluetooth speakers in Hexagonal setting.Each speaker has two channels. I named my speakers’ channels as follows:Speaker 1 channels as a, bSpeaker 2 channels as c, dSpeaker 3 channels as e, f
In my configuration I did the following:Set my channel c as my LeftSet my channel e as my RightSet my channel d as my Left surroundSet my channel f as my Right surroundSet my channel a as CenterSet my channel b as Center
3. Double finger click on it and select “Use This Device For Sound Output”.
4. Have fun!
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