PRELIMINARY
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34
4.10.4
Active crossover
The C-DSP 8x12 DL can implement active crossovers of any complexity up to the number of available output
channels. An example signal flow is illustrated overlaid on the signal flow diagram from Figure 5, assuming a
stereo input with three-way speakers:
Each speaker has a single Dirac Live channel. The Mixer tab routes each channel from Dirac Live to three output
channels. It looks like this:
You will need to use REW to measure each driver, correct it, and implement crossover filters. The procedure is
similar to that described in our app notes for a two-way speaker
at this link
.
Each channel will require the crossover filters. For example, the midrange crossover might look like this:
Of course, a more complex system
–
for example, active rear channels
–
can also be created by using additional
channels. After completing driver correction and crossovers for all channels, proceed to perform a Dirac Live
calibration using DLCT.
