® | CREATING A PROGRAM |
Most analog crossovers use 24 dB/octave, so this is a good place to start.
The window also includes a graphic display that shows the response curve of the currently selected filters and equalizers in a Level vs. Frequency graph.
Clicking on any of the filter text boxes (lower left of the window) opens a new window called XOVER. Use the sliders to browse the available filter types and click on the desired one. Use the horizontal slider to select the corner or “knee” frequency. This is the frequency point at which a filter begins to attenuate any signal above (for Low Pass) and below (for High Pass) the selected frequency. The choices are preset in specific increments and ranges that corre- spond to the selected crossover architecture (2 Way, 3 Way. etc.).
The description of filters as 16dB, 24dB, 48 dB, etc. actually means XX dB PER OCTAVE. A higher number means a steeper attenuation slope. You can see the different slopes selected in the graphic display window.
You can use the PEQ to help compensate for dips or peaks at the crossover points. Remember though that less equalization is better: try to use a combination of slope, filter type and fre- quency to get the crossover point between bands (for instance: low to mids or mids to highs) as “flat” as possible. The will minimize the need for additional equalization
Always check the manufacturers specifications for the speakers you are using so the proper crossover settings can be used, Incorrect settings or
28
