Which brings us back to what you said in your firdst post so I don't know what I'm babbling about. It's been a long time since I messed with crossovers, but I know the info is out these if you use the Google.
Quick & dirty, this page has some basic charts. Grab a choke and see what happens.
http://www.termpro.com/articles/xover2.html
Yeah, when you run a woofer full range the mids get all honky and the excursion from the bass disrupts the highs.
"That wasn't any farewell slap." -Dick Powell