There are two basic views for the crossover function. There is the "Crossover" Mode and "Independent" Mode. The exact look of the panel will vary if the device is being individually controlled or in a Master Panel. This variance also includes the controls that are included on the Master Panel.
The Frequency Box allows you to choose the frequency at which you want to apply the crossover point. You can both enter this manually on the keyboard and press enter, or you can use the scroll arrows on the side of the box.
Clicking the Enable button turns the crossover point you have set on.
To enter advanced mode, click the Independent Tab towards the top of the window.
With the Independent Crossover window open, you are now able to apply a High Pass and Low Pass Filter for each Channel.
In the Filter Type box, you are able to choose from the following filters by clicking on the drop down menu:
Butterworth 6dB/Oct
Butterworth 12dB/Oct
Butterworth 18dB/Oct
Butterworth 24dB/Oct
Butterworth 48dB/Oct
Linkwitz/Riley 24dB/Oct
Linkwitz/Riley 48dB/Oct
Once you have selected your filter type, you can now select the frequency you want to use. You do this by clicking the Frequency box.
Now that you have completed picking the Filter Type and Frequency, you activate the filter by clicking on the Enable button. The fader to the right controls gain from -15 dB to +15 dB.
If you are connected to the Internet you can find additional information, including video overviews at:
http://www.crownaudio.com/tutorials/