Zapco DC Intro - Manual (Page 15)

Crossovers
The next step is to set the crossovers, so we know the speakers are protected
We can choose High Pass, Low Pass or Band Pass
We can choose Butterworth of Linqwitz-Riley crossover slopes
We will use Ch3/4 as
midrange so we will set
the crossover to Band
Pass (highlighted green)
We will choose a steep
crossover slope (36dB)
for the bottom of the
midbass to protect the
speaker. We will set the
Crossover at 100Hz
We will use a shallower slope for the top of
the mid to let it blend with the tweeter
In this case we choose a
Linkwitz-Riley filter
(highlighted green)
Here we are working on channel pair 3/4