Hi.
How would you implement low cost home ambient system? I want to have
the same sound in each room of my home, and the sound should be
gentle, quiet. For that reason the solution should be based on
multiple loudspeakers, placed in each room. True?

I remember that in one of hotels that I used, I had a radio placed in
corner of my room. It was the most extreme position of whole hotel
space. I observed that I was able to play ambient music and gently
hear it
in all lodgings from that one radio. So maybe the position of audio
source is important?

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Regards,
Adam