Software Instruction Manual

IQ–MSD Turbo 1.4 Advanced IQ System Software
Page 163
7 Monitoring & Controlling Equalizers
An “equalizer” is a device that is used to adjust the sound level over relatively narrow frequency bands. For
example, a
1
⁄3 octave equalizer divides the audio band (usually 20 Hz to 20 kHz) into
1
⁄3 octave bands and
provides a level control for each band. Equalizers get their name from their most common use—making the level
of all frequencies equal. Several third parties have developed digital equalizers that have been licensed to
operate in an IQ System and be connected to a Crown Bus.
It is not the purpose of this User Manual to provide a detailed discussion of the features of each model; but rather
to provide some general guidelines on the use of the Turbo to control an equalizer. The specific functions and
features may vary slightly depending upon the exact model you have. Please refer to the documentation that
came with your equalizer for more details, including hardware installation instructions.
Most equalizers can only be controlled from a graphics plate. There is one exception. Certain models from White
Instruments can be controlled from a control block. All references to an equalizer control block refer to the White
equalizers.
7.1 Initializing an Equalizer Control Block
The first step in initializing an equalizer control block (shown below in Figure 7.1) is to set the IQ address and
Crown Bus loop number. This is normally done automatically during a roll call. However, you can set them
manually if you need to configure a system off-line.
Fig. 7.1 A Typical Equalizer Control Block Screen
E
Q
U
A
L
I
Z
E
R
C
O
N
T
R
O
L