I think most here would say that their VP100 (and likely the 150 owners as well) have their center channel set at 80Hz..... with a few that have the flexibility maybe even setting it for 90Hz or 100Hz.

I think that having them crossed over at something below 80Hz would be in the very small minority.

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::