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Rule!
(pawb.social)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
https://www.dolby.com/about/support/guide/speaker-setup-guides/
In Atmos, channels going in doesn't necessarily align with channels coming out
Speaker setups are regarding channels going out, a jack like the one in the OP would be an input jack as no speaker would need more than two poles
Delete: not sure I'm actually adding anything with this