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Section Six: Using GRAPHI-Q Front Panel Controls
Section Six: Using GRAPHI-Q Controls
Many GRAPHI-Q owners will be immediately familiar with the simple operation of the front panel controls.
Operation of these controls will be very similar when using an RS-232 connection to control GRAPHI-
Q functions from a Windows-based computer platform (see Section Eight).
6.1. GRAPHIC EQUALIZER CONTROLS
Please make note of the default front panel control protocols that apply when setting graphic EQ, FBX
filters, compression, delay, and output level for the two outputs of the single-input GRAPHI-Q (GRQ-
3101). All processing, INCLUDING delay, is applied to Output B in the factory default setting. All
processing EXCEPT delay is applied to Output A. Therefore, all graphic EQ, FBX, and compression
adjustments will apply to both outputs, while front panel delay adjustments will affect only the B output.
Remote control operation of the GRQ-3101 will enable separate delay and output level control settings
for Outputs A and B. All other processing (graphic EQ, parametric EQ, and compressor/limiter settings)
can be applied to one or both outputs using software control, but the GRQ-3101 will not permit unique
output settings for any processing except delay, and for the output levels.
6.1.1. Front Panel Control
The GRAPHI-Q graphic EQ sliders have a center detent, calibrated to zero boost/cut at the factory.
Raising the slider above the detent boosts a frequency band surrounding the center point nominal
frequency; lowering the slider below the detent cuts the frequency band. The GRAPHI-Q comes
from the factory set to a ±12 dB boost/cut range. You may change this to a ± 6 dB range (and back
again) by pressing and holding the delay up/down buttons simultaneously for approximately one
second. An LED in the lower right section of the front panel will indicate the 6 dB range condition
when it is illuminated. For two channel GRAPHI-Q units, pressing and holding either channel’s
delay up/down buttons will switch both channels’ EQ ranges simultaneously. It is not possible to
select different ranges for the two channels.
NOTE: Pulling down the A channel sliders causes the B channel to become the master for both
channels. This also slaves the compressor, high & low cut filters, and output gain. Delay, bypass,
and FBX controls remain channel specific.