I’m looking for some help in understanding the LFE setup options on my Denon AVR-5308ci. There are two options.\n\n1. LFE-THX-\n\n2. LFE+Main\n\nThe owner’s manual is a somewhat vague. I am using the LFE-THX- option with the three-front channels crossed over at 80hz and the surrounds crossed over at 100hz.\n\nThe LFE+Main allows me to set my crossovers the same as LFE-THX. How is this different from the LFE-THX- settings?