10.6

Table Of Contents
86Logic Pro Instruments
Main filter parameters
On/Off buttons: Enable or disable each filter.
Filter type pop-up menus and fields: Choose the filter type. Use the descriptive names:
Clean, Edgy, Gritty, Rich, Sharp, and Smooth to make a choice that is right for your
sound. You can step through the available filter types with the Previous and Next
buttons (the arrows). See Logic Pro Alchemy filter types.
Note: The chosen filter type can alter the names and functions of the default Cutoff,
Resonance, and Drive knobs.
Cutoff knobs and fields: Set the cutoff frequency for the chosen filter type.
Resonance knobs and fields: Boost or cut frequencies above, below, or surrounding the
value set with the Cutoff knob. Resonance behavior changes when different filter types
are chosen.
Drive knobs and fields: Overdrive the filter. This can lead to intense distortions and
aliasing, depending on filter type.
VU meters: Indicate the current audio level received from all four sources. If the filter
input level exceeds 0dB, the VU meters indicate clipping by momentarily turning red.
Clipping produces an undesirable digital audio artifact in the output stage. If clipping
occurs, reduce the Vol knob of the loudest source or adjust the balance between
sources.
Par/Ser knob and field: Set the filter routing configuration. Note that this is pre-effects.
At 0% position, the total output of Filter 1 is sent to the main outputs of the filter
module. This is parallel mode.
At 100% position, the total output of Filter 1 is sent to the Filter 2 input. This is series
mode.
At 50% position, equal amounts of the Filter 1 output signal are sent to the Filter 2
input and the main outputs of the filter module.
Note: When the Par/Ser knob is set to 100%, a portion of the Filter 1 signal bypasses
Filter 2 whenever the Filter 1 FX Master knob is set above 0%.
FX master knobs: Determine the balance between the filter module output sent to the
effects section and the filter module output sent directly to the Alchemy main output.
At 0% position, the total filter output is sent to the Alchemy main outputs, and none
of it to the effects section.
At 100% position, the total filter output is sent to the effects section, and none of it
to the Alchemy main outputs.
At 50% position, equal amounts of filter output signal are sent to the effects section
and the Alchemy main outputs.
Send destination pop-up menus: Independently send the output of main filter 1 or 2 to
the Main effects rack, or to the A/B/C/D effects rack. Choose FX Main, FX A, FX B, FX C,
or FX D.
Note: When the FX master knob for filter 1 or 2 is at the full-left position, the total filter
1 or 2 output is sent to the Alchemy main outputs, and none of it to the effects section.