APG DMS26, User Manual

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DIGITAL MANAGEMENT SYSTEM DMS26
10
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 APG Digital series processors have a library of Factory Presets designed to suit a range of applications.
Factory Presets 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 bu 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 Presets 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 Presets including output designations can be found in Appendix A.
Creating a Crossover
In addition to the Factory Presets 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 Presets described above. These presets are also locked but the user can name
and store their own edited versions in any free preset location.
Navigation and Viewing Parameters
Many of the processing elements in each input and output path have features that may be controlled by the user, such as
gain, frequency or limiter threshold. We call these adjustable features parameters.
A parameter may be adjusted when it is displayed by turning one of the three-parameter knobs. Each of the three-
parameter knobs is associated with a zone on the display. Adjusting the leftmost parameter knob will change the value of
the parameter showing in the leftmost zone of the display and so on. Turn a knob clockwise to increase the value of a
parameter, or anti-clockwise to decrease it. The knobs are velocity-sensitive so turning a knob rapidly will cause the
action to ‘accelerate’, so the value changes more rapidly.