OK, after being conscious for more than 3 hours, I can see what you're getting at. The global/independant thing has nothing to do with the triple or quadruple crossover, it just refers to whether the bass is managed the same on all of the inputs (CD, DVD, etc). In other words, will the speakers be set to small with an 80 Hz crossover for CDs, DVDs, radio, VCR, etc. or not?

I am the Doctor, and THIS... is my SPOON!