Logic Digital Controller
User Guide version 3
Page 13 of 31
Operation
Starting up
The unit will energise as soon as power is applied to the IEC inlet; there is no power switch.
During the start up process the firmware application model number and version numbers are
displayed and the outputs are muted until the unit has completed its internal checks. Once the
start-up routines are complete and the unit is ready to pass audio. The DSP signal path will be
restored to the current settings when it was last powered down and the audio signal is gradually
ramped up to its correct level.
Selecting a Factory Preset
The LOGIC SYSTEM Digital series processors have a library of Factory Preset
s
designed to suit a
range of applications.
Factory Preset
s
contain some parameters that are fixed and hidden from view; the remainder of
the DSP parameters are available for user manipulation. The number and type of hidden
parameters is dependant on the Factory Preset, typically crossover frequencies, output delay
and some EQ’s are hidden; those settings that are a function of the loudspeaker cabinet design
and should not require adjustment for different applications.
To recall a Factory Preset for a particular cabinet or system, press Recall and use the left hand
parameter knob A to scroll through the available Factory Preset locations (as indicated by a box
symbol after the preset number). Once the appropriate preset has been selected press recall
again, at which point you will be asked to confirm the action by pressing recall for a third time.
This is to guard against accidental recall of presets.
Factory Preset
s
are locked so they cannot be over-written. The user can, however, store an
edited version of a Factory Preset in any free preset location.
Details of all the Factory Preset
s
including output designations can be found in Appendix A.
Creating a Crossover
In addition to the Factory Preset
s
the unit has two further ‘
Base Presets
’; mono and stereo.
These
Base Presets
are stored in locations 1 and 2 respectively, they can be used to develop
settings for any loudspeaker combination and are recalled in the same way as the Factory
