Not gonna matter. Your ears will work fine with the proper setup technic.
Try Jim Smith: "Get Better Sound" and have a sub like SVS that has a remote app.
-6db vs -3db speaker roll-off for sub crossover calculation?
My ATC speakers only list their frequency roll-off as -6db at 48 Hz. All the guidance I can find from SVS and other sub info sources use -3db to determine settings.
Help!