Happy to try and confuse again!

A crossover is, very basically put, a separater of frequencies. It (very loosely speaking) cuts off frequencies below or above a certain point, say 80 Hz.

In this case, the crossover cuts off (rolls off) everything above 80 Hz for the speakers, and everything below 80 Hz goes to the sub. This is IF you set your speakers to small. If they are set to large, and you set an 80 Hz crossover, 80 Hz and below will go to the sub, but everything will go to the speakers.

The Harman/Kardon models have what they call a triple or quadruple crossover, where you can set different crossover points for the various speakers (front, center, surrounds, rears if you're lucky). An example of this for movies would be an 80 Hz crossover for M22s, a 90 Hz crossover for the VP100, and an 100 Hz crossover for the QS4s, with all speakers set to small. So the sub gets everything below 80 Hz for the fronts, everything below 90 for the center, and everything below 100 Hz for the surrounds.

If you go into the OSD (on screen display) and choose speaker setup, you can change these settings, first setting the speakers to large or small, and bass management (marked as sub) to global or independant. The you can flip over to the crossover screen to set the crossovers.

Ken

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