Quote:
connect your sub to the channel that is not delayed


This makes the incorrect assumption that all low frequencies on an album are panned center. That's just not the case.

Example: Sometimes the toms on a drum kit are panned in the stereo field, so that when you get to the low, boomy-sounding floor toms, they're off to one side at least somewhat. And the choice as to whether to pan them as drummer's POV or audience's POV is a subjective one, resulting in different results in different recordnigs.
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Tony Fabris