Hello guys,
I was looking at the advanced channel settings and stumbled upon this "side" option.
Haven't found any documentation on that anywhere.
What in the world is a "side" channel?
For the record, I use the Beocreate, but I suspect that would be available in other products as well.
Side is basically the "back" channel in Dolby surround, the signal that's on the left and right channel in inverse phase.
Thank you for the answer! Extremely interesting; I didn't have any clue the first surround solutions were so ingenuous!
Here's some more information, in case someone else is interested:
https://electronics.howstuffworks.com/surround-sound.htm