Dolby
®
Model CP650 Installation Manual
B-Chain Alignment
4-11
Crossover Config:
Channel: Left
>Param : F Type Low
>Param : F Type Low
>Param : F Type Low
>Param : F Type Low
Value : Lkwz.-Rly.
Selecting Butterworth Filter Type
The crossover filters designed into the Cat. No. 791 are adjustable to allow tailoring
of the response to your particular system. For most applications, the crossover filter
type should be set to Linkwitz-Riley. The slopes in this filter are not adjustable. The
filter has two cascaded two-pole Butterworth filters for the lowpass side, and a
3-pole filter for the high-pass side at the crossover point. The corner frequency for
each crossover point is adjustable.
To customize the filter slopes, change the crossover filter type to Butterworth by
following the steps below.
+
Move the display to the
Crossover
Configuration
menu, by pressing the left
menu button multiple times, or by pressing
and holding
the button while rotating the
front-panel knob.
Rotate the front-panel knob to select the
channel that you wish to set up.
menu
OK
Select:
Filter Type
, Freq, Slope,
Delay, Polarity Inversion
Press the center menu button to move the
selection arrow to
Parameter
. This allows
you to select which parameter you wish to
set.
Rotate the front-panel knob to select the
filter type (
F Type
.) The default filter type
is Linkwitz-Riley. If you wish to change the
crossover filter slope to customize your
application, the type must be changed to
Butterworth by following the next steps.
Crossover Config:
>Channel: Left
>Channel: Left
>Channel: Left
>Channel: Left
Param : F Type Low
Value : Lkwz.-Rly.
