zapco DAII-SL, Owner'S Manual

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Output 2 switch :
Selects the function of the “X2 Output”. It can be X2’s highpass or
lowpass, or it can tie into X1’s highpass in order to make use the X1 Freq
range switch. This feature is especially useful when a high frequency
crossover is needed for the midrange-tweeter transition or any time you
want the convenience and simplicity of a single frequency control for both
outputs (see X1 Freq. above).
X2 Slope :
Selects either 12dB or 24dB per octave slope for X2’s low pass
only. When engaging the 24dB mode, the output is automatically mono. If
the Output 2 switch is selected as highpass, use the 12dB (switch out)
mode.
X1 Freq Range :
Multiples X1’s crossover frequency by ten (see X1 Freq above).
This switch has the capability of both outputs (see Output 2 switch above).
Output 1-X1 :
Selects whether the X1 Output is highpass or lowpass. This switch
does not effect Output 2 in anyway. Either output can be configured as
highpass or lowpass. They can both be the same or they can be opposite of
each other.
Input Mode :
Selects between two-channel or four-channel input. The 2CH (in)
position uses the X1 input to feed both crossover sections. In the 4CH (out)
position, the X1 input only feeds the X1 crossover section and the X2 input
feeds the X2 crossover section. This feature is useful if front/rear “fade
through” capability is needed, or if you wish to create 24dB one-way or two-
channel bandpass configurations.
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