He's talking about the delay needed for an MK sub in his system
@dazed&confused - it's not the Lyngdorf processing, it's the amp in the sub.
You will have to use your manufacturers recommended delay setting or to be more accurate use REW to find the proper delay for you speakers in your room with your crossover of choice.
Everyone needs to calm down a bit
@arisholm as well as myself and others have said it's an extra nudge in performance but it's not critical by any means and requires some knowledge and patience. 99.9% of AV users don't even bother with this kind of thing, so some perspective is required.