In my current setup I have a pair of M2i's and the VP100 center channel. I have 4 Acoustic Research (cheap bookshelfs) for surrounds. HSU sub. H/K 535 receiver.

The receiver has variable crossover settings and I wanted to know how I should set them. IT's a bit confusing because I believe the VP100 center only goes down to 95hz.
All of the others go lower than 80hz.
I can manually adjust the xover onscreen with the H/K for the fronts, center, surrounds and sub individually.

The question is how high should the sub xover be? I think 100hz because of the center, am I correct?