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8.3.2.4. Parametric Filter Linking. Parametric filters can be linked; however, different rules apply for GRQ-
3102 and GRQ-3102S, as opposed to GRQ-3101 and GRQ-3101S.
For the GRQ-3102 and GRQ-3102S:
1.
The simplest case occurs when you begin by setting all the filters you wish to be linked FOR ALL LINKED
CHANNELS ON ALL AFFECTED UNITS to Parametric prior to any other manipulation (see Section
8.2.5). If you desire a REL link, set the frequencies, depths, and widths to independent values, then use
the Link Table to create a REL LINK group. If you desire an ABS link, use the Link Table to create an
ABS LINK group. Note that FBX filters in place always take precedence over corresponding Parametric
filters in a linked network, to prevent unintentional removal of an FBX filter.
2.
A more complicated scenario involves linking one channel to another without first setting corresponding
filter types on other channels or units to Parametric. You must manually change ALL filters you wish to
link to Parametric, and then change either width, depth, or frequency of any filter. The filter channel will
act as the source value in an ABS link and its settings will be applied to linked parametric filters. In a REL
link, other linked channels will change up and down in equal increments, but need not have the same initial
values.
For the GRQ-3101 and GRQ-3101S:
You will not be allowed to have corresponding output filters set to different filter types. Changing one filter type
from FBX-F to FBX-D to Parametric will automatically change the corresponding filter on the other output to
the same type of filter. All parameter changes will be identical for both outputs.
Section 8.3.2.5. Compressor Linking Options for GRQ-3102 and GRQ-3102S Models. Just as with any
other parameter setting, you may link compressor channels, left or right, within the same unit, or between
multiple units, in either ABS or REL linked networks. The procedure for this is identical as it is for other
parameters.
However, for stereo programs, simply linking compressor settings of the left and right channels to be identical
may not be appropriate. For example, if both channel A and channel B begin to compress when a peak level
exceeds a certain threshold, and the sound engineer intentionally designs his audio program to have more
sound in the left channel, that channel’s sound will be compressed more readily than the right channel program.
Since compression affects sound levels, such a setup will result in a difference in the balance of left-right
channel output levels relative to the input balance; in other words, the stereo image will shift.
To preserve channel balance yet still allow compression, Sabine offers another method of linking left and right
channels of GRQ-3102 and 3102S models: True Stereo compression. In True Stereo mode, both channels
are compressed equally if the threshold is exceeded in either channel. There are two methods by which True
Stereo compression can be selected:
1.
In the Link Table, enter the letter “S” in the appropriate channel boxes, and click “Apply.”
2.
In the Compressor/Limiter screen, you may toggle the box below the CLOSE button to engage either True
Stereo or Dual Mono compressor modes.
Note that changing compressor link status by either method will automatically update the status report in the
other screen.
True Stereo linking is subject to the following three conditions:
1.
It may not be applied to GRQ-3101 and 3101S models. Because these models do not offer two discrete
channel signal paths, True Stereo linking will not apply to such units.
2.
In a multiple unit GRAPHI-Q network, you may NOT apply a True Stereo link from one unit to another,
but only between the left and right channels of a single unit. All the units in a network may have their L-
R channels linked, but each link will be independent of other units.
A 3102 or 3102S unit with channels linked in True Stereo may not also be part of an ABS or REL link for
compressor values. Of course other parameters may be linked (ABS or REL) independently of compressor
relationships.
8.3.2.6. Relative Linking and Scale Values. All changes made to cells that are REL LINKED will increment
or decrement by an identical number of steps in the scale of the parameter. This may not always be a linear
relationship. For example, changing the compressor ratio in one REL LINKED cell from 1:1 to 1.4:1 will result
in a change in another REL LINKED cell from 10:1 to 16:1. Both will move up one notch on the scale for
compression ratio scale.
Section Eight: Using GRQ Remote Software
