Operation Manual

121
PRO2 Live Audio System
Owner’s Manual
Chapter 15: Graphic Equaliser (GEQ)
This chapter describes the internal GEQs of the PRO Series. Initially, it explains how to
use the PRO2 Control Centre to configure and operate the GEQs and then details all of
their available control functions.
Overview of the GEQs
The PRO2 Control Centre incorporates a graphic equaliser (GEQ), which is closely based
on the Klark Teknik DN370 Graphic Equaliser (see Appendix C “Klark Teknik DN370
GEQ” for details). You can configure the PRO2 Control Centre to have set numbers of
these GEQs up to a maximum of 28, and these are mutually inclusive of the number of
effects you can have. For example, you can have three effects and 20 GEQs, but if you
want five effects you can only have 12 GEQs.
Each GEQ is a single-channel, 31-band, third octave graphic equaliser, and GEQ
features switched 2nd order high pass and low pass filters and two notch filters with
variable frequency ranges.
The GEQ is primarily a mono process, but in the case of stereo groups or mix channel
outputs, a stereo GEQ is controlled from a single set of controls.
The GEQs are managed via a virtual eight-unit rack on the Graphic EQs screen. From
here you can open the window of any GEQ, which gives you full control over it.
About the Graphic EQs screen
The main sections of the Graphic EQs screen comprise:
• GEQ patching source The border to the left each GEQ unit will display its source,
if patched. In the diagram above, GEQ 1 has been patched to “AS3” (aux 3).
• GEQ rack overview This section contains an overview of the total number of GEQ
racks in use, and also aids GEQ navigation/selection. The number of racks (up to
four) is dependent on configuration and the currently selected rack is highlighted in
yellow (as is the currently selected GEQ unit).
• GEQ rack A ‘virtual’ rack containing up to eight GEQs. The rack also includes
STORE PRESET and LOAD PRESET user library buttons (see Chapter 24 "User
Libraries (Presets)" on page 235).