SABINE GRAPHI-Q2 User manual

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B1-GRQ-2-OpGuide-v1-050125.pmd
GRQ3121 (1U, single channel, one input, two outputs)
GRQ3122 (2U,dualchannel,oneinput&outputperchannel)
GRQ3121-S (1U,blank front panel slave,single channel, one input,two outputs)
GRQ3122-S (1U,blankfront panel slave, dual channel, oneinput&output per channel)
GRQ2RemoteforWindowsTM Softwareincludedwitheveryunit;runsupto8Graphi-Q2sperCOMport
(maximum of 2 COM ports)
• All front panel controls are analog-style; signal path is digital
• “Tweek-n-Peek”feature: FrontpaneladjustmentsofallparametersareshowninLEDdisplayscreen
• 24-bit A/D and D/A conversion, 32-bit processing
• 20 to 20 KHz Frequency Response
• +18 dBV Maximum Signal Input & Output
• FloatingPointSHARCProcessor
• >110dBdynamicrange
Eachchannelprovides(nowwithfully independent processing on 1x2 units):
• 31-band graphic EQ, with ± 6 or 12 dB range (selectable)
• Crossover: Bessel, Butterworth, and Linkwitz Reily filters; slopes to 48 dB/octave (Software only)
• High Cut Filter (3KHz to 20KHz) and Low Cut Filter (20 Hz to 1KHz)
• FBXFeedbackExterminator:upto12Filters,withSetupMode(AutoSetupModeviaremotecontrol)
• Parametric Filters: up to 12 filters, numeric or graphic control (Software only)
• Compressor/Limiter,withcontrolsforratio, threshold, andgain(attack,release,andkneeadjustable
with remote)
• Digital Delay, with up to 1 second delay, adjustable in 20 microsecond increments
• Bypass: dedicated switches for FBX, EQ, and Delay with built in LED indicators
• LED Segmented Indicators: FBX Filters, Level, Gain Reduction
• LED Point Indicators: FBX Setup, Remote, EQ Range
• LEDCharacterDisplay:Delaysetting,EQfaderboost/cut,HighCutFiltersetting LowCutFiltersetting,
CompressorRatio,Threshold,Gain,andStausMessages.
BackPanel:
• XLR & 1/4" TRS inputs & outputs
• RS-232 Serial input & output (additional serial input on the slave front panels)
• Remote switching (8-position contact closure switch; allows switch selection of all 20 stored Graphi-
Q2presets)
Graphi-Q2RemoteSoftwareFeatures:
All front panel controls, plus more, including:
• FBX filter depth & width adjustments; switchable to parametric filters (depth, width & frequency
adjustments)
• Graphic EQ filter width adjustments
• Passwordprotection
• View & edit frequency response curves
• 20user-definedstoredpresets
• Control and link up to 8 Graphi-Q2s (16 channels of audio) per COM port (1 or 2 ports can be used)
• Future-proofFREEFlashRAMupgradecapability: upgradeyourfirmwareandsoftwarefromtheSabine
website(www.Sabine.com)!
Summary of Features
SUMMARY OF FEATURES
OperatingGuideVersion1:for SabineGraphi-Q2swith:
• GRQ2FirmwareVersion2.20
• GRQ2RemoteSoftwareVersion5.0

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DECLARATION OF CONFORMITY
EN 60065: 1993
EN 60742: 1995
EN 55103-1: 1997
EN 55022: 08:94 + a1:05:05
EN 55103-2: 1997
EC - DECLARATION OF CONFORMITY
CE MARKING
We, the Manufacturer
SABINE, INC.
13301 NW US HIGHWAY 441
ALACHUA, FLORIDA USA
declare that the product
EQUALIZER
SABINE MODEL GRQ3100
Is in conformity with
Council Directive: 73/23/EEC and 89/336/EEC (EMC Directives)
Standards to which conformity is declared:
Manufacturer'sSignature:
Date: October31, 2002 Name: DoranOster,SabinePresident

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B1-GRQ-2-OpGuide-v1-050125.pmd
TABLE OF CONTENTS
Summary of Features......................................................................................................................................................... 1
Section One: Introduction................................................................................................................................................. 4
SectionTwo: Analog vs. Digital Signal Processing (DSP) .............................................................................................. 5
SectionThree: Front & Back PanelViews ........................................................................................................................ 6
Section Four: Block Diagram/Internal Signal Path.......................................................................................................... 8
Section Five: Installation .................................................................................................................................................. 9
5.1. BETWEEN MIXER OUTPUT AND POWER AMPLIFIER ............................................................................................................ 9
5.2. TWO CHANNEL GRAPHI-Q2: MAINS AND MONITORS. .......................................................................................................... 9
5.3. USE WITH A POWERED MIXER .............................................................................................................................................. 10
5.4. USE AT A MIXER INSERT POINT ............................................................................................................................................. 10
5.5. SINGLE CHANNEL GRAPHI-Q2:ONE INPUTTWO OUTPUTS ............................................................................................... 11
5.6. WHAT NOTTO DO ..................................................................................................................................................................... 11
Section Six: Using Graphi-Q2 Front Panel Controls ....................................................................................................... 12
6.1. FRONT PANEL CALIBRATION .................................................................................................................................................. 12
6.2. GRAPHIC EQUALIZER CONTROLS......................................................................................................................................... 12
6.3. HIGH CUT/LOW CUT FILTERS ................................................................................................................................................. 13
6.4. FEEDBACK CONTROL AND PARAMETRIC EQUALIZATION.................................................................................................. 13
6.5. COMPRESSOR/LIMITER CONTROLS ..................................................................................................................................... 17
6.6. DIGITAL DELAY CONTROLS .................................................................................................................................................... 17
6.7. BYPASS ..................................................................................................................................................................................... 17
6.8. FRONT PANEL DEFAULT SETTINGS ADJUSTABLE ONLY BY SOFTWARE .......................................................................... 18
6.9. FRONT PANEL CONTROL OPTIONS ....................................................................................................................................... 18
Section Seven: GRQ2-Remote Software Installation ...................................................................................................... 19
7.1. SYSTEM REQUIREMENTS AND RECOMMENDATIONS ........................................................................................................ 19
7.2. CONNECTIONS......................................................................................................................................................................... 19
7.3. INSTALLINGTHE SOFTWARE .................................................................................................................................................. 20
Section Eight: Using GRQ2-Remote Software ................................................................................................................ 21
8.1. WELCOME SCREEN/NETWORK CHAIN SCREEN ................................................................................................................. 21
8.2. GRQ MAIN SCREEN & MAIN FUNCTIONS .............................................................................................................................. 22
8.3. LINKING PARAMETERS AND CONTROLWITHTHE GRQ-REMOTE SOFTWARE ................................................................ 29
8.4. RESET PARAMETERS .............................................................................................................................................................. 33
8.5. PRINTING GRAPHI-Q SETTINGS FOR DOCUMENTATION..................................................................................................... 33
8.6. STORING AND RECALLING GRQ PRESETS ......................................................................................................................... 33
8.7. ASSIGNING NAMESTO GRAPHI-QS ....................................................................................................................................... 36
8.8. PASSWORD PROTECTIONWITH GRQ-REMOTE SOFTWARE .............................................................................................. 37
8.9. NAVIGATING WITH MULTIPLE UNITS ...................................................................................................................................... 38
8.10. UPGRADING GRAPHI-Q FIRMWARE & SOFTWARE ............................................................................................................. 38
Section Nine: Suggestions for Optimal Use of the Graphi-Q2....................................................................................... 39
9.1. SYSTEMSETUPSUGGESTIONS............................................................................................................................................. 39
9.2. WIDE & NARROW FILTERS: GRAPHIC, PARAMETRIC, AND FBX ......................................................................................... 40
9.3. RECOMMENDED EQ USAGE .................................................................................................................................................. 41
9.4. USING DIGITAL DELAY ............................................................................................................................................................. 42
9.5. USINGTHE COMPRESSOR/LIMITER ...................................................................................................................................... 47
SectionTen: TroubleshootingTips.................................................................................................................................. 51
Section Eleven: Graphi-Q2 Engineering Specifications ................................................................................................ 53
SectionTwelve:Cautions &Warranty ............................................................................................................................... 54

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Section One: Introduction
Congratulations on your purchase of the Sabine Graphi-Q2. This product represents our latest
breakthrough in our never-ending quest to improve the world’s sound.
Asidefromthepowerfularrayoffeaturespackedintoasingleunit (graphicEQ,FBXfilters,parametric
filters,high and low cut filters,delay, compression, andlimiting), the Graphi-Q2 also offers a choice of
user interfaces.
Computercontrol: learntoloveit. Astheworldbecomesanincreasinglydigitalplace,thecomputer
isomnipresent. Someregardthisasamixedblessing. Inaudioapplications,thedownsideofcomputer-
controlled digital audio stems from the unfamiliarity and operational limitations of its control interface.
Afteryearsofexperiencewithanalogcontrols,manysoundengineerspreferthe“hands-on”approach
tocontrol audio with knobs andfaders. It’s intuitive and direct. To theanalog lover, typing commands
onakeyboardfeelsawkwardandmayrequireredirectingone’sattentiontothecontrolinterface,rather
than the sound emerging from the speakers.
Ontheotherhand,thereisnoquestionthatthe digital signal processing available through a computer
interfaceoffersimprovedprecision andreliabilityofcontroloveryour audio. Equalizationadjustments
inthe digital realm are exceptionallyaccurate,offer pinpoint resolution, andminimizephase distortion
and frequency drift. Compressor parameters not only can be set quite precisely, but also offer an
expanded range of adjustment and ease of storage and recall that are much more difficult to achieve
withanalogtechnology. And,withtheSabineFBXalgorithm,oneofthemostseriousproblemsofaudio
amplification —that lovely howling sound we call feedback —can be removed with the precision and
delicacy of laser surgery.
AnalogANDDigital-Best of Both Worlds. TheGraphi-Q2combinesthebestofboth worlds. If you
needtoputyourhandsonfadersandknobstofullyexperienceaudio,weofferyoutheeaseandcomfort
of our “analog-style”front panel. Push, pull, turn, and tweak to your heart’s content!
If your fingers naturally gravitate toward computer keyboards, the Graphi-Q2 offers your kind of user
interface as well. Each Graphi-Q2 comes equipped with an RS-232 serial interface and the Sabine
Graphi-Q2RemoteforWindowsTM software. Allthefrontpanelcontrols,andsomeimportantadditional
ones, can be adjusted from your computer keyboard. And if you’re seriously addicted to the thrill of
punchingkeys,youcansavesomemoneyasyouindulgeyourselfwithaGraphi-Q2BlankFrontPanel
Slave unit. Only controllable via computer, these models make mis-adjustment by unauthorized,
untrained, or unthinking individuals impossible!
Whatever your control preference, the Graphi-Q2 opens up a world of signal processing power
previouslyunavailableatitsexceptionalprice. Allspecificationsaretopnotch(24-bitA/DandD/A,32-
bit internal processing) and all of its functions operate concurrently and ergonomically. So allow us to
suggest you read and study this entire manual to understand the whole story. Enjoy!
SECTION ONE: INTRODUCTION

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SECTION TWO: ANALOG VS. DIGITAL SIGNAL PROCESSING
Section Two: Analog vs. Digital Signal Processing (DSP)
The ongoing debate continues: what sounds better, digital or analog signal processing? Audio
engineers ALL have an opinion on this, but the lack of documented research on the topic makes
conclusions tentative. Nonetheless, the audio industry is slowly moving to digital as circuit designs
continuously improve and technology advances into the realm of 24-bit resolution —which provides
fineraudiodetail,particularlyatlowlevelsofdynamicrange.Thetentativeconclusionwewouldsuggest
is that the sound of digital circuits is widely variable, encompassing the capacity to sound remarkably
like analog circuits …and much more. Beyond these considerations, however, there are undeniable
advantages to DSP …and one disadvantage that we believe we have solved with the Graphi-Q2.
THE ADVANTAGES
1. GREATERPRECISIONAND REPEATABLEACCURACY. Analogcircuitry produceslessexact
andrepeatableadjustment. Identicalanalog circuitsmayproducedifferentresultswhen process-
ing an identical audio signal, due to the tolerance of components comprising the analog circuit.
Digital circuits rely on repeatable mathematical calculations and thus are more consistent. For
equalizers, this means that the slope, shape, and symmetry of digital EQs are consistent across
frequencies, and from one application to the next.
Inadditiontotheprecisionattributabletodigitalprocessing,theGraphi-Q2 offers a high degree of
operationalprecisionandrepeatabilityaswell. Onananaloggraphicequalizer,theoperatormust
infer the value of a knob or EQ fader setting from its position. With the Graphi-Q2 Tweek-n-Peek
feature, the exact value of each knob is visually displayed as each setting is adjusted.
2. LESSPHASEDISTORTION. Allequalizerscausesomedegreeofphaseshifting. Inanalogfilters,
this phase shift exceeds the width of the filter —often by a considerable margin. In other words,
the phase shift encompasses frequencies beyond the boost or cut range of the filter. With digital
filters, this phase shift can be restricted to within the filter width.
3. LESS FILTER DRIFT. Analog circuits rely on components that vary as they age and/or are
subjected to different ambient temperatures. This variation can in turn cause analog filters to drift
from their original settings. In contrast, digital filters are based on mathematical formulas and will
remain constant over time and changing temperatures.
4. LESS NOISE. As analog parts wear, get dirty, or corrode, readjusting them can introduce noise
into the signal path. All audio engineers are familiar with the sound of a “scratchy fader.”Digital
controls affect the signal, but are not actually in the audio path and thus cannot introduce noise.
5. RECALLAND STORAGEOFSETTINGS. Becausedigitalfilterscanberepresentedmathemati-
cally, settings are easily stored, recalled, and copied to other channels or units. Analog filters are
dependentonthephysicalpositionofpotentiometersandsliders,andstoringandrecallingsettings
requiresservomotorsandautomatedrepositioningofcontrols. Thisisbothmoreexpensivetobuild
and produces less accurate results.
6. COST. Astechnologyimproves,featuresincreaseandpricesplummet. Nowhereisthistrendmore
apparentthaninthedigitalworld. DSPcircuitryisgenerallysmaller,lesscostly,andmorepowerful
than comparable analog circuitry, which means you get a lot more bang for your buck (or
DeutschMark, pound, or peso) with a digital box. Compare the price of the Graphi-Q2 to a high
quality analog graphic equalizer, and you’ll see what we mean —especially when you add a
compressor, delay, FBX and parametric EQ, and software interface to the comparison.
THE DISADVANTAGES
1. FAMILIARITY AND EASE OF USE. The sole disadvantage of digital processors that few if any
soundengineers will argue has to do with the familiarity and user-friendliness of the digitalcontrol
interface. Many powerful DSP products are menu-driven and difficult to use. One very special
featureof the Graphi-Q2 GRQ3122andGRQ3121 models is thefamiliar analog-style interface of
the front panel. The control surface looks, feels, and operates like a graphic equalizer from the
1970’s—withthepowerandfeaturesof21st centurytechnology. Ifyou’rea21st centurytechnophile
wholovescomputersandknobs,thenyouwon’tbedisappointedeither—justpluginaserialcable,
loadupthesoftware,andyou’llfindawholenewworldofhacker-pleasingsoftware controlwaiting
for your command.

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Section Three: Front & Back Panel Views
SECTION THREE: FRONT AND BACK PANEL VIEWS
Clip LED-lights
at 3 dB below
clipping Signal
LED-lights when
input is above 30
dBV peak
Phoenix block connectors
For contact closure switch RS-232 Serial In Connect to serial port
of PC, or previous
GRQ in chain
RS-232 Serial Out
Connect to next
GRQ in chain
XLR connectors
Power connector
& fuse
Additional
RS-232 Serial In Power On LED
FBX Section
12 filter indicators
Reset, Width,
Set, & Lock Fixed Filter
Controls
Compressor Section
Level Indicators
Ratio, Threshold, & Gain controls
Bypass Controls
Status LEDs
FBX SETUP - Fast FBX Setup
REMOTE - GRQ Remote active
EQ Range - EQ fader range indicator
EQ faders
Adjust boost/cut for 31
specific frequencies
High & Low Cut Filters
Input signal &
gain reduction
indicators
Digital Delay
up & down controls.
EQ range
Press up & down buttons simulta-
neously to toggle EQ range between
+6 dB and +12 dB
Digital Delay / Tweek-n-Peek Display
Digital delay time value displayed. Also
momentarily displays current firmware at
power up, or value of any front panel
control altered.
XLRXLRXLR
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3121 Bac121 Bac
121 Bac121 Bac
121 Back Panelk Panel
k Panelk Panel
k Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3121-S Front Panel121-S Front Panel
121-S Front Panel121-S Front Panel
121-S Front Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3121-S Bac121-S Bac
121-S Bac121-S Bac
121-S Back Panelk Panel
k Panelk Panel
k Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3121 Front Panel121 Front Panel
121 Front Panel121 Front Panel
121 Front Panel
1/4” TRS connectors
Power Switch

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SECTION THREE: FRONT AND BACK PANEL VIEWS
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3122 Front Panel122 Front Panel
122 Front Panel122 Front Panel
122 Front Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3122 Bac122 Bac
122 Bac122 Bac
122 Back Panelk Panel
k Panelk Panel
k Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3122-S Bac122-S Bac
122-S Bac122-S Bac
122-S Back Panelk Panel
k Panelk Panel
k Panel
GG
GG
GRR
RR
RQ3Q3
Q3Q3
Q3122-S Front Panel122-S Front Panel
122-S Front Panel122-S Front Panel
122-S Front Panel

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Section Four: Block Diagram/Internal Signal Path
SECTION FOUR: BLOCK DIAGRAM/INTERNAL SIGNAL PATH

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Section Five: Installation
TheGraphi-Q2shouldbeplacedin a well-ventilated, well-groundedequipmentrack,preferablywithin
easyreachofthesoundengineer. Graphi-Q2slaveunitsneednotbeasimmediatelyaccessible,since
control is through a computer interface.
5.1. BETWEEN MIXER OUTPUT AND POWER AMPLIFIER
The most common placement of the Graphi-Q2 in a sound system is between the output of a mixing
consoleandtheinputtoapoweramplifier. InthisconfigurationtheGRQ2canprovideallyoursystem
processing, including delay and crossover. A typical configuration will look like this:
This configuration can also be simplified using a single channel (one input,
usingonlyoneoutput)Graphi-Q2.
5.2. TWO CHANNEL GRAPHI-Q2: MAINS AND MONITORS.
Alternatively,withatwo-channelGraphi-Q2,youmayelecttorouteonemixeroutputthroughGraphi-Q2
channelAintoapowerampdrivingyourmainspeakers,andyourmixermonitoroutputintoGraphi-Q2
channel B, routed to your monitor speakers. This configuration is diagrammed below:
Section Five: Installation

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5.3. USE WITH A POWERED MIXER
Withapoweredmixer,theGraphi-Q2mustbeinsertedbetweenthe“LineOut”jack(s)(lineleveloutput,
before the signal goes through the amplifier) and the “Amplifier In”jack(s), as shown below:
NOTE: Not all powered mixers will offer such patch points, or they may label them differently. When
in doubt consult the manual of the console manufacturer.
5.4. USE AT A MIXER INSERT POINT
TheGraphi-Q2mayalsobeusedatamixerinsertpoint,eitherforasingleinputchannel,orforagroup
orbusinsertpoint. Thiswill dedicate all of the features andprocessingpoweroftheGraphi-Q2to one
ortwosinglechannelsonyourmixer,ortoasubgroupofinputs(forexample,allthedrumsinyourmix).
The patching will look like this:
SECTION FIVE: INSTALLATION

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5.5. SINGLE CHANNEL GRAPHI-Q2: ONE INPUT - TWO OUTPUTS
ThesinglechannelGraphi-Q2alsooffersauniquesetupoption,sinceitofferstwoparalleloutputs. Using
the Graphi-Q2 software, it is possible to separately assign the settings for graphic EQ filters, FBX/
parametric filters, high/low pass filters, compressor/limiter, and digital delay to either or both outputs.
Compressor/limiter and all EQ adjustments will be the same for each output, but the digital delay and
outputlevelsettingsmaybesetindividuallyforthetwooutputs. Thediagramonthefollowingpageshows
apossibleone-input-into-two-outputssetup.
Note: Processing is now independent on 1x2 Graphi-Q2 units. FBX, EQ, compression, and delay
settings can be unique on each output.
5.6. WHAT NOT TO DO
TheGraphi-Q2shouldNOT be usedinthefollowingconfigurations:
1. DoNOTplugamicrophonedirectlyintotheGraphi-Q2backpanel. TheGraphi-Q2isdesignedfor
operation with line level signals only. Your microphone signal must first go through a wireless
receiver, mixer, preamp, etc. that will boost its output gain to line level.
2. Do NOT use the Graphi-Q2 in an auxiliary or effects loop, such as would be used to add reverb to
differentchannelsinyourmixer. Effectsloopsaredesignedtosplitsignalpaths,andthenmix“wet”
processed signals with the “dry”signal path. The Graphi-Q2 is designed for use as an “in line”
processor, meaning all the signal path should be routed through it.
3. DoNOTmixbalancedandunbalancedinputsandoutputstoandfromtheGraphi-Q2. Thiswillresult
in a reduction of signal level.
SECTION FIVE: INSTALLATION

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SECTION SIX: USING GRAPHI-Q2 CONTROLS
Section Six: Using Graphi-Q2 Front Panel Controls
ManyGraphi-Q2ownerswillbeimmediatelyfamiliarwiththesimpleoperationofthefrontpanelcontrols.
OperationofthesecontrolswillbeverysimilarwhenusinganRS-232connectiontocontrolGraphi-Q2
functions from a Windows-based computer platform (see Section Eight).
ImportantNoteonEquipmentPower-on SequencingandFeedbackSuppression
The Graphi-Q2 is similar to a computer in that it requires several seconds to boot up and become
operative. Because of this, the potential exists for feedback to assault your system should you power
up all of your equipment (including the Graphi-Q2) in unison, with volumes set to operating levels.
Therefore, it is wise to consider either one of the following courses:
1. Sequence the power up so that the Graphi-Q2 turns on well ahead of the power amp. Allow
a 5 second time differential for comfort.
2. Set up the Graphi-Q2 to give the signal a boost, and adjust the rest of your gain structure
accordingly. When the Graphi-Q2 is bypassed (or still booting), the signal level will be below the
feedback threshold.
6.1. FRONT PANEL CALIBRATION
Your Sabine Graphi-Q2 ships from the factory with all front panel controls precisely calibrated for
maximumaccuracy. However,ifyouupgradetheGraphi-Q2(GRQ3121orGRQ3122only)firmware,
Sabinerecommendsrecalibratingthefrontpanelcontrols. Youmayalsowanttoperiodicallyrecalibrate
to assure the highest degree of front panel control precision.
Calibrationisasimpleprocess. Setallequalizerfaderstothecenterdetentposition. RotatetheHi
CutandThresholdknobstothefullclockwiseposition. RotatetheLoCut,Ratio,andGainknobs
fully counterclockwise. For two channel units you must set both sets of controls.
HolddownboththeFifthOctaveandSetFixedbuttonsuntil“CalibratingFront”appearsonLED
display. (For GRQ3122 use the buttons for the B channel). Release the buttons when the LED
displays“CalibrationDone.”
6.2. GRAPHIC EQUALIZER CONTROLS
Pleasemakenote of the default frontpanelcontrolprotocols that apply when settinggraphicEQ,FBX
filters, compression, delay, and output level for the two outputs of the single-input Graphi-Q2
(GRQ3121). Allprocessing,INCLUDINGdelay,isappliedtoOutputBinthefactorydefaultsetting. All
processing EXCEPT delay is applied to Output A. Therefore, all graphic EQ, FBX, and compression
adjustmentswillapplytobothoutputs,whilefrontpaneldelayadjustmentswillaffectonlytheBoutput.
RemotecontroloperationoftheGRQ3121willenableseparatedelayandoutputlevelcontrolsettings
forOutputsAandB. Allotherprocessing(graphicEQ,parametricEQ,andcompressor/limitersettings)
can be applied to one or both outputs using software control, but the GRQ3121 will not permit unique
output settings for any processing except delay, and for the output levels.
6.2.1. Front Panel Control
The Graphi-Q2 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-Q2 comes from
thefactorysettoa±12dBboost/cutrange. Youmaychangethistoa±6dBrange(andbackagain)
by pressing and holding the delay up/down buttons simultaneously for approximately one
second. AnLEDinthelowerrightsectionofthefrontpanelwillindicatethe6dBrangeconditionwhen
itisilluminated. FortwochannelGraphi-Q2units,pressingandholdingeitherchannel’sdelayup/down
buttonswillswitchbothchannels’EQrangessimultaneously. Itisnotpossibletoselectdifferentranges
for the two channels.
NOTE: Pulling down the A
channel sliders causes the B
channel to become the mas-
terforbothchannels.Thisalso
slaves the compressor, high &
low cut filters, and output gain.
Delay, bypass, and FBX con-
trols remain channel specific.
IMPORTANT
Recalibrate the
Front Panel
Controls after
Upgrading
Firmware
IMPORTANT
Equipment
Power-on
Sequencing to
Avoid Feedback
TECH TIP
Changing
Boost/Cut
range from
12 dB to 6 dB
All A-channel
Sliders down
TECH TIP
Linking Channel
A & Channel B
Using GRQ3122
FrontPanel

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SECTION SIX: USING GRAPHI-Q2 CONTROLS
6.2.2. Linking Channel Controls (Two-channel Units)
TwochannelGraphi-Q2unitsofferausefulanduniquefeatureforlinkingchannelcontrols.Pullingallthe
Achannel EQ slidersto the bottomdefeats these controls, andapplies the Bchannel settings tothe A
channelaswell.NowtheBchannelslidersactasmastercontrolforbothchannels.Thisappliesnotonly
tothegraphicEQcontrols,buttocontrolsforthecompressor,highandlowcutfilters,andoutputgain.
Delay,bypass,andFBXfiltercontrolswillremainchannelspecific(inotherwords,tobypassthegraphic
EQ for the A, you must press “Bypass”for channel A).
6.2.3. The Tweek-n-Peek Feature (Front Panel Models only)
Ifyou’vebeenexperimentingwiththecontrolsonyourGraphi-Q2
front panel, you’ve probably already figured out Sabine’s new
“Tweek-n-Peek”feature. If you’ve ever grabbed a graphic EQ
fader, moved it, and wondered what the “real”setting was, your
prayers have been answered. Tweek-n-Peek shows you the
valueofeverycontrolonthefrontpanelwhileyouadjustthem. As
youmoveacompressorknoborEQslider,thevalueofthesetting
forthatcontrolwillappearintheLEDscreenthatnormallydisplays
thedigitaldelaytime. Aftertwosecondsofnofurtheradjustment,
thedisplaywillreverttothedigitaldelaysetting. Thismeansyou
can adjust all your controls to a precise, repeatable setting, not
just to a vague knob or fader position. The accuracy of your
settings for all the parameters of your Graphi-Q2 is thus signifi-
cantly improved. The resolution of front panel graphic EQ fader
settingsis½dBwhentherangeofboost/cutis+6dB,or1dBwhen
the range of boost/cut is +12 dB. (When using the remote
software to control the EQ faders the resolution is always ½dB,
regardless of range.)
6.3. HIGH CUT/LOW CUT FILTERS
6.3.1. Front Panel Control
Thesecontrolsarelocated immediatelytotherightof thegraphicEQsliders. FortheLOW
CUTFILTER,theGraphi-Q2willattenuatefrequenciesatandbelowyourknobsettingwith
aslopeof12dBperoctave. FortheHIGHCUTFILTER,frequenciesatandabovetheknob
setting will be attenuated 12 dB per octave. The extreme counterclockwise knob position
oftheLOWCUTFILTERandtheextremeclockwisepositionoftheHIGHCUTFILTERturn
the filters off. The range of the HIGH CUT FILTER extends from a starting point of 3 KHz
to20KHz. TherangeoftheLOWCUTFILTERextendsfrom20Hzatthebottomto1KHz
atthetop. Thefrequencychosenisthepointatwhichattenuationofthefilterreaches3dB.
Inotherwords,thefilterroll-offactuallybeginsjustabove(forlowcutfilter)orbelow(forhigh
cut) the chosen frequency.
6.4. FEEDBACK CONTROL AND PARAMETRIC EQUALIZATION
OperationoftheFBXFeedbackExterminatorsectionofthefrontpanelofyourGraphi-Q2issimple,but
mayrequireabriefexplanationforthoseofyouunfamiliarwithSabineFBXproductsand/orterminology.
Let’s begin by defining a few key terms.
6.4.1. Glossary of Terms
•FEEDBACK describes what happens when a loudspeaker disperses sound back into an amplified
microphone,atalevelsufficienttoallowoneormorefrequenciestoringoutofcontrol. Feedbackcan
occur at any frequency, but is especially painful at mid to high frequencies. The specific frequencies
that feedback in a particular situation depend on the acoustics of the environment, the placement of
themicrophone(s)andspeaker(s),theresponsecharacteristicsofthesoundsystemcomponents,and
thevolumeof amplification. Anyone who has operatedasound system or attended aconferenceor
a concert is familiar with feedback and its unpleasant consequences!
•A PARAMETRIC EQUALIZER allows the user to precisely specify three critical values that
determineanequalizer’scharacteristics: thecenterfrequencyoftheEQbandthatisboostedorcut
(measuredinHertz),theamountofboostorcutimposedatthecenterpoint(measuredindB),and
thewidthofthe bell-curveshapedfrequencybandthatisaffected(typicallymeasuredinoctaves).

14
•An FBX FILTER is essentially an automatically placed, narrowly attenuated parametric filter, with
thecenterpointofitsnarrowcuttunedtoaprecisefrequencythatfeedsbackwhenasoundsystem
amplifiesoneormoremicrophonestoasufficientvolume. TheGraphi-Q2willautomaticallyplace
up to 12 FBX filters in the signal path, corresponding to 12 distinct frequencies of feedback.
•AFIXEDFBXFILTERwillnotchangethefrequencyofthefilternotch.Onceitsetsitself,itremains
atthesamefrequency. However,unlessitisLOCKED,aFIXEDFILTERmaymoveitsnotchdeeper
withoutchangingfrequency. Fixedfiltersaretypicallysetbyturningupsystemgaintothepoint of
feedback prior to sound check or performance, and will represent the “first layer”of feedback
protection.
•A DYNAMIC FBX FILTER acts like a Fixed filter, until all available FBX filters (Fixed or Dynamic)
areinuse andanewfrequencybeginstofeedback. Whenthishappens,whicheverDynamicfilter
wassetearliestintheperformancewilldropitsoriginalfrequencyandmovetothenewone. Dynamic
filtersareespeciallyusefulwithmobileorwirelessmicrophones(wherefeedbackfrequenciesmay
changeduetomicrophonerepositioning)andrepresentthe“secondlayer”offeedbackprotection.
Note that both Fixed and Dynamic filters can be set while music is playing (except when in Setup
Mode). Oneofthe distinguishingpropertiesoftheSabineFBXalgorithmisitsabilitytodistinguish
music (or speech, or other sounds) from feedback.
•A LOCKED FBX FILTER is a Fixed filter locked in place; i.e., it cannot get any deeper or change
itsfrequency. LockingFixedfiltersensuresyourfirstlayeroffeedbackprotectionisalwaysinplace.
•FILTER WIDTH generally refers to the width (measured in octaves, or fractions thereof)
of a filter, including graphic EQ filters, parametric filters, and FBX filters. More specifically, width
isdefinedbydeterminingtheouterfrequencies(surroundingthefiltercenterpoint)thatarealtered
± 3 dB when the filter is imposed. This is shown in the diagram below:
In this example, the filter width is defined as approximately one-half octave, corresponding to the
bandoffrequenciesattenuated3dBormorewhenthefilterispulleddown. Inthisexample,thewidth
is the same whether the
filter depth is -9 dB or -19
dB.
•CONSTANT Q filters are
filterswhosewidthsremain
constantregardlessofthe
amountofboostorattenu-
ation imposed by the fil-
ters. Inotherwords,inthe
above example, a Con-
stantQ filter that wasone
half-octavewidewouldre-
main a half-octave wide
regardlessoftheEQslider
position. Some EQ units
on the market are Con-
stant Q; others are Pro-
portional Q, meaning the
filter gets wider as it gets
deeper. All Sabine products use Constant Q filters, to prevent affecting any more sound than
necessary.
•FBXSetupModereferstoSabine’sunique,exceptionallyfastmethodofplacingFBXfiltersduring
sound system setup. Setup Mode is less “fussy”about analyzing the sound it hears and is more
likely to regard audio signals over a minimum threshold as feedback. It’s also designed to allow
feedbacktooccuratlowerinputlevels,and,finally,itimposesastronglimiteronthefeedbackoutput
as it occurs. The net result of all this black magic is that you are able to ring out feedback more
quickly,and at amuch quieter level! You’ll knowSetup Mode isengaged when theSetup LED (at
the right of the front panel) is illuminated.
NOTE:MAKESURESetupModeISOFFWHENYOUUSETHEGraphi-Q2ORYOURAUDIOSIGNAL
QUALITYMAYSUFFER!(SeeSection6.4.2.3 Setup Mode Cautions).
SECTION SIX: USING GRAPHI-Q2 CONTROLS
True Constant Q filters:
widths remain constant
as the filters get deeper.
Standard on all Sabine
products.
IMPORTANT
FBX Setup Mode
OFF During
Performance

15
B1-GRQ-2-OpGuide-v1-050125.pmd
6.4.2. Front Panel Control of FBX filters
Note: MostofthefrontpanelandGRQ-Remotecontroloperationof theFBXsectionoftheGraphi-Q2
issimilar,exceptthattheremotecontrolreplacesyourfingerswithamouse. Inaddition,therearesome
controls offered only with GRQ-Remote software. These features are summarized in Section Eight.
ControlsforthepatentedFBXFeedbackExterminatorarelocatedimmediatelytotherightoftheHIGH
and LOW CUT FILTERS.
6.4.2.1. FBX Filter LED Indicators
The 12 LEDs on the front panel Graphi-Q2 correspond to 12 available FBX filters. Each time an FBX
filtersets,anotherLEDwilllight. AblinkingLEDindicateswhichfilterwas
mostrecentlysetormadedeeper(afiltermaystartatonedepthandnotch
deeperatthesamefrequencyasthesystemgainincreases).TheGraphi-
Q2 comes preset from the factory to a default setting of nine Fixed and
threeDynamicfilters.However,youmayfollowtheinstructionsinSTEP
5 below to reconfigure the setup to be any combination of Fixed and
Dynamic filters.
6.4.2.2. Eliminating Feedback with the Graphi-Q2 FBX Filters
Follow these steps to obtain the maximum gain before feedback, with
minimal or no loss in the tonal quality of your program. The steps that
followareapplicabletosettingupaone-channelunit(GRQ3121). When
usingtheGRQ3122,werecommendsettinguponechannelatatimeby
turningdowntheotherchannelofthemixerorpoweramplifier. Ifyouare
using both outputs of your GRQ3121, you may wish to turn down the
powerampgain for whichever output islesslikelyto produce feedback.
If both channels are equally feedback prone, leave the power amps
turnedup. Thiswillallowyoutosetfiltersthatarespecifictoeachchannel
of your sound system.
STEP ONE: EQUIPMENT SETUP
Setupyoursoundsystemandpositionall the speakers and microphones you anticipate using. When
possible, avoid placing microphones directly in front of speakers.
STEP TWO: TURN OFF NOISE GATES
If there is any equipment in the signal path that incorporates a noise gate function, you MUST
DISENGAGE these noise gates prior to the setup procedure. You may reengage them upon setup
conclusion.
STEP THREE: GAIN DOWN, TURN ON
Setthemastervolumesonyourmixertotheirlowestgainpositions. Turnonthemixer,thentheGraphi-
Q2,thenanyotheraccessories,andfinallyyourpoweramplifier. Adjust the gain settings and balance
for all your microphones, but keep your master mixer volume down.
STEP FOUR: RESET FILTERS
If there are FBX filters already set (indicated by illuminated LEDs), you should RESET these filters.
(NOTE: FormaximumFBXpower,werecommendresettingfilterseverytimeyouchangeormoveyour
sound system.)
TheGraphi-Q2allowstwostagesoffilterresetting. YoumayresetonlytheDynamicfilters,oryoumay
elect to reset all (both Fixed and Dynamic).
•To RESET DYNAMIC FILTERS ONLY, press and hold the RESET button long enough for the
Dynamic filter LEDs to flash three times, then release.
•ToRESETALLFILTERS,pressandholdtheRESETbuttonforsevenflashesofalltheLEDs,then
release.
NotethatresettingallfiltersautomaticallyengagesFBXSetup Mode,whichwillallowfeedbacktooccur
and be removed more readily, and at a lower volume. “Setup Mode on”will be indicated by the Setup
LED (at the right of the front panel) illuminating.
NOTE:MAKESURESetup ModeISOFFWHENYOUUSETHEGraphi-Q2ORYOURAUDIOSIGNAL
QUALITYMAYSUFFER!(SeeSection 6.4.2.3 Setup ModeCautions)
SECTION SIX: USING GRAPHI-Q2 CONTROLS
NOTE: Setup steps continued on next page
IMPORTANT
Turbo Mode
needs QUIET.
No program,
talking, music
or loud room
noise!

16
STEP FIVE: SET FIXED FILTERS (Optional)
IfyouwanttochangethefactorydefaultsettingofnineFixedandthreeDynamicFBXfilters,pressandhold
theSETFIXEDbutton. ThecorrespondingLEDsforallfilterssettoFIXEDwillcomeon,thenallfilterLEDs
willflash, then each filter LED will begin tolight in sequence.Continue to hold the button -- when theLED
correspondingto the desirednumber of fixedfilters lights, release the SET FIXED button. The number of
fixedfiltershasnowbeenset.AllremainingfilterswillautomaticallydefaulttoDynamicfilters—unlessyou
aresetting filters withyour computer. (SeeSection Eight)
STEP SIX: SET FBX FILTER WIDTH (Optional)
FBXfiltersdefaulttoaConstantQwidthofone-tenthofanoctave. ExtensiveSabineresearchhasshown
this width to be an ideal setting, wide enough to remove feedback with very little or no effect upon the
rest of the audio program. In some applications (for example, speech-only applications, where audio
quality is not as demanding as in a music program), however, it may be advisable to use a wider filter
formorerobustfeedbackelimination.
TheGraphi-Q2allowsyoutomixfilterwidthsbetweenone-tenthandone-fifthoctaves. Youmaysetall
filterstoonewidth,orsomefilterstotenth-octaveandsometofifth-octave. Widthselectioniscontrolled
bythebuttonmarked“FIFTHOCT”directlybelowthe RESETbutton. Whenthisbuttonis pushedand
theLEDisilluminated,anyfilterssetafterthatpointwillbeone-fifthoctavewide. Pushingthebutton
again, and switching off the LED, will make any additional filters one-tenth octave wide.
STEP SEVEN: RAISE MASTER GAIN
First, make sure your Graphi-Q2 is not set to bypass the FBX filters (check the Bypass button LED; it
should be off). Then, make sure your power amplifier is turned up and your microphones are turned
on. (Note: Ifyou resettheFBXfilters,your Graphi-Q2will beinSetupMode,as indicatedby the
frontpanelSetupLED. Seethecautionsbelow.) Slowlyraisethemastergainofyourmixeruntilthe
first feedback begins. The FBX will quickly remove the feedback, by setting the first filter and lighting
thefirstfilterLED. Continue toraisethegainslowly.Trytoavoidmakingtwoor morefrequenciesfeed
backatthesametime, whichsometimeshappensifthegainis raised tooquickly. Asnewfrequencies
feed back, new filters will be placed, as indicated by consecutive filter LEDs lighting up. (Note:
sometimesthesamefrequencywillfeedbackasecondtime,andanearlierfilterwillnotchmoredeeply.
Whenthishappens,theoriginalLEDindicatingthisfrequencywillblink,showingittobethemostrecently
active filter.) Repeat this procedure until one of two things happens:
1. All of the Fixed filters andatleastthefirstDynamicfilterareset. ThiswillautomaticallyturnSetup
Mode off (LED will turn off to indicate this), or...
2. You’vesetasmanyfiltersasyouneedorwant,eventhoughyouhaven’tusedthemall. PressLOCK
FIXED to prevent any more Fixed filters from setting, or any of the set Fixed filters from notching
moredeeply. PressingLOCKFIXEDalsoexitsSetupMode.IfyouwishtoallowunusedFixedfilters
to set or allow deepening of Fixed filters press the Lock Fixed button again.
NOTE: While Setup Mode is operating, the compressor LEDs may indicate compressor activity. This is
normalandwillnotaffectcompressoroperationwhenSetupisnotengaged.WhenSetupModeautomatically
turnsoff,you’llbetreatedtoabriefLEDlightshow. ThefilterLEDswilllightinsequencebackandforth
to indicate that you are exiting Setup Mode -- stop raising gain! BecauseSetuplimits the volume of
feedbackasitoccursduringsetup,feedbackvolumemaybrieflyincreasewhenexitingSetupThedancing
LED display is designed to caution you to monitor your master gain setting while coming out of Setup.
6.4.2.3. Setup Mode Cautions.
SetupModeisdesignedtoallowfastandquietfeedbackeliminationduringsetup.SetupModeshouldONLY
beusedfor pre-performance setup. DO NOT USE SetupModeDURINGA PERFORMANCE! This will
producedistortedaudioandsetfiltersonmusicoraudioprogram.SetupModealsomaynotworkwell during
setup in a very noisy environment. To speed up feedback elimination, Setup relaxes its criteria for
distinguishing“good”audiofromfeedbackandplacesfiltersmorereadily. Iftheenvironmentisnoisy,there
is a greater likelihood of placing a filter on audio that is not feedback. When in doubt, turn Setup off by
pressingtheLockFixedbutton,thenpressLockFixedonemoretime(toreadytheFBXFixedfilters)and
raiseyoursystemgain as described in Step Seven above. Thiswillstilleliminatefeedbackvery quickly,
thoughnotasquicklyasSetupMode,andwithoutreducingthevolumeofthefeedbackbeforeitisfiltered
out. You’ll know if Setup is on by the LED indicator on the Graphi-Q2 front panel.
WhetherornotSetupModeisused,theendresultofsettingupFBXfiltersshouldbeidentical. Yoursound
systemwill have clearer, louder,feedback-freesound.
SECTION SIX: USING GRAPHI-Q2 CONTROLS
IMPORTANT
Setup Mode OFF
During
Performance
IMPORTANT
SetupMode needs
QUIET.
No program,
talking, music or
loud room noise!

17
B1-GRQ-2-OpGuide-v1-050125.pmd
6.4.3. Adjustments Available Only with Remote Control
InadditiontoFBX,graphic,andhighandlowcutfilters,yourGraphi-Q2canprovidefullyprogrammable
parametric filters. These filters are accessible only through GRQ-Remote software. Each channel of
your Graphi-Q2 can have up to 12 total filters, which can be configured as any combination of
parametric,fixedFBX,ordynamic FBXfilters.SeeSectionEightfor acompletelookatGRQRemote
Control Software.
6.5. COMPRESSOR/LIMITER CONTROLS
6.5.1. Front Panel Control
COMPRESSOR controls are located immediately to the right of the FBX
controls. Front panel controls consist of standard RATIO, THRESHOLD,
andGAINmakeupknobs,andtwohorizontalLEDladdersshowingchannel
input gain on the top, and compressor gain reduction on the bottom row.
RATIO ranges from 1:1 to infinity: 1 (limiting).
TheinputlevelTHRESHOLD,atwhichcompressionisengaged,canbe
adjusted from -30 dBV to + 31.5 dBV.
The output gain of the compressor can be increased or decreased by
12 dB (this will also serve as the control for the overall output level of
the box).
CompressorKNEE,ATTACK,andRELEASEsettingscanonlybesetusing
theRemoteControlSoftware,andwilldefaulttothelastsettingsprogrammed. (Inaddition,theremote
software will allow setting of a separate limiter threshold.) The factory default settings are attack = 15
mSec,release=400mSec,andknee =20. Thesewillremaininplaceuntiltheyarereprogrammedusing
thesoftware(seeSection9.5.2fordetailedinformationonCompressor/LimitersandSection8.2.6for
usingtheGraphi-Q2RemoteControlSoftwareCompressor/Limitercontrol).
6.6. DIGITAL DELAY CONTROLS
6.6.1. Front Panel Control
DIGITALDELAYcontrols are located totheright of the COMPRESSOR controls.
You may delay the output of the Graphi-Q2 audio signal by up to 999.96 mSec
(essentially one second) by using the up/down increment buttons just below the
display showing the amount of delay in mSec. Delay adjustments may be made
with 20-microsecond precision.
For the GRQ3121 model, the digital delay adjustments from the front panel will
affect ONLY the Output B signal. Output A will remain undelayed. You may of
course alter the delay setting for either output using the GRQ Remote Software
(see Section Eight). Note: For a complete discussion on using delays in sound
systems (and we mean complete), see Section 9.4.
WhentheGraphi-Q2isfirstturnedon,thefirmwareversionwilldisplaybrieflywithintheDigitalDelayLED
screen. See Section 6.2.3 for how Tweek-n-Peek uses the Digital Delay LED.
6.7. BYPASS
6.7.1. Front Panel Control
BYPASScontrolsarelocatedatthefarrightoftheGraphi-Q2frontpanel. Separatepush
button controls allow independent bypass switching for graphic EQ, FBX, and digital
delaysettings. Fortwo-channelGraphi-Q2s,separatebypasscontrolsareavailablefor
each channel as well. When any feature is bypassed, the LED within the switch will
illuminate.
TurningoffpowertotheGraphi-Q2willplacetheentireunitinhardwirebypass. Please
notethatasuddenbypassofFBXfiltersmayresultinasuddenburstofno-longer-filtered
feedback. It ain’t pretty when this happens, so proceed cautiously.
SECTION SIX: USING GRAPHI-Q2 CONTROLS
NOTE: Image shows
settings for bypassing
Compressor/Limiter.
1.38
TECH TIP
Unity Gain
Set Gain to 12:00
(straight up) for
unity gain.

18
SECTION SIX: USING GRAPHI-Q2 CONTROLS
6.8. FRONT PANEL DEFAULT SETTINGS ADJUSTABLE ONLY BY SOFTWARE
Graphi-Q2modelsGRQ3121andGRQ3122allowadjustmentofmost,butnotallparametersfromthe
frontpanel. Asidefromcontrolofparametricfiltersand thecrossover,whichcanonlybeadjustedusing
theGRQ2Remotesoftware(seeSection8.4),thefewparameterswhichcannotbefrontpanelcontrolled
include:
1. Compressorattack,release,knee,and(forGRQ3122)TrueStereo/DualMonooption
2. Limiterthreshold
3. All global parameters (graphic EQ filter width, maximum FBX depth, and FBX sensitivity and
persistence)
These controls can be adjusted using the GRQ2 Remote software as well. In addition, factory default
settingsmade for front panel operation can be changedwhile the units are connected to the software.
These changes will remain in place for all front panel operation, regardless of whether a computer is
connected or not, until the defaults are changed again from the software.
Tochangecompressor/limiterdefaults,youmustbeusingtheGRQ2softwareandbeinFrontPanelMode
(Preset#1). Select“FrontPanelDefaults”(F8key)fromtheMAINMENU,andchangetheparameters
to the values you desire.
TochangeGlobalParameter settings,choose“GlobalParameters”(F5key)fromthe MAINMENU,or
“Global”fromwithintheFBX/Parametricscreen. Youmaychangeanyvaluewithintheindicatedranges,
and your new settings will be used as new defaults for current and subsequent front panel operation.
6.9. FRONT PANEL CONTROL OPTIONS
IndefaultmodeGraphi-Q2modelsGRQ3121and GRQ3122 are setforfrontpanelcontrol. Thereare
three possible control scenarios for these units:
1. Frontpanelcontrol. Allcontrolsareavailableonthefrontpanel. TheRemoteSoftwarecannotcontrol
the unit, but if your are connected you can observe the changes made by the front panel within the
software.
2.GRQ2RemoteSoftwarecontrol. WhenanypresetexceptPreset1isloadedviathesoftware,then
the software takes control and the front panel controls are locked out.
3. Mixed Control. Using the Front Panel control window in the software, you can selectively lock or
unlockthefront panel controls. This is usefulinavariety of applications. You can, forexample,easily
provide access to the front panel FBX settings but not the graphic EQ. Or you could maintain control
overseveralfunctionsinaGraphi-Q2networkusingthesoftware,andallowaguestengineeraccessto
otherfunctionssimultaneously during the show.
ChoosingMixedControlsettingscanonlybedonethroughGRQ2Remotesoftware. Seesection8.2.10
for instructions on using this part of the software.

19
B1-GRQ-2-OpGuide-v1-050125.pmd
SECTION SIX: USING GRAPHI-Q2 CONTROLS
Section Seven: GRQ2 Remote Software Installation
TheGraphi-Q2modelsGRQ3121andGRQ3122aredesignedwitheasy-to-use,familiar,analog-style
frontpanelcontrolsontheonehand,andcomputer-based,softwaredrivencontrolontheother. Inorder
for you to experience the full impressive capability of the Graphi-Q2, however, we recommend using
the GRQ-Remote Software, which opens up a whole new level of programmability. Here are a few of
the control features accessible using the Remote Software:
•Parametricfilters. Youcancontrolupto12parametricfiltersperchannel,changeorcombineFBX
filters into parametric filters, etc.
•Crossover. Adjust slopes and roll-off points for both outputs, and choose filter types.
•Channel and multiple unit linking. With simple serial connectors, you may link up to 2 sets of
Graphi-Qs, each consisting of up to 8 units (16 channels), that can be controlled from a single
computer. Within each of these networks you can link channels from different units, allowing
common control of any parameter.
•Increased storage capacity. You can save files of up to 67 different memory configurations,
transfer files from one unit to another, and assign presets to contact closure switches.
•More control options. High and Low Cut filter slope can be adjusted to 24 or 12 dB/octave.
Compressor/Limiter attack, release, and knee can be adjusted. Auto Setup Mode automates
feedbackcontrolevenmorethanbefore,plusgraphsthefiltersastheyareset,andreportstheexact
frequencies, depths, and widths of all FBX filters. Password Protection allows you to prevent
unauthorized tampering, but still allow a less sophisticated user to load settings.
•Nocostfuture-proof upgrading. YourGraphi-Q2canbeupdatedviaasimpleconnectiontothe
Sabinewebsite(www.Sabine.com),wheneverfirmwareand/orsoftwareupgradesareannounced.
All Graphi-Q2 models come equipped with the hardware and software necessary to run the units via
remote control from a Windows-equipped computer. Your unit should include one CD ROM that
includes the GRQ-Remote Software and the Sabine Upgrade Wizard for future upgrades of your
firmware and/or Remote Software (see Section 8.10.).
7.1. SYSTEM REQUIREMENTS AND RECOMMENDATIONS
1. PC computer equipped with Pentium processor 100 MHz or faster.
2. Hard disc with at least 5 MB of available space for program files.
3. Windows 95 or higher.
4. SVGA or greater resolution graphic card and monitor.
5. Recommended minimum monitor resolution: 1024 x 768 pixels (or 800 x 600 pixels for 15 inch
monitors). Monitor display settings need to be set to “small fonts”and 16 bit color as default.
6. One COM port for a serial connection, with a 16550 or faster COM chip.
7.2. CONNECTIONS
Ifyourcomputerhasa9-pin
COMport,useastandard9-
pin male to standard 9-pin
female RS-232 connector,
available from most com-
puter stores (for connecting
multiple GRQ2s, use the
slimmerversionoftheserial
cable: .625 inches or 15.9
mm maximum width). Con-
nect the computer’s COM
porttothebackoftheGraphi-
Q RS-232 jack labeled SERIAL IN. For the GRQ3121-S and GRQ3122-S, you may also use the front
panel RS-232 jack. However, make sure that only one serial port is connected, front OR back.
If your computer’s COM port requires a 25-pin connector, use a standard RS-232 25-pin female to
standard 9-pin male computer-store connector. Alternatively, you may use a 25-pin female to
9-pin male adapter with a standard 9-pin to 9-pin connector described above. Do not use any
connectorsthatare wiredforanull modem.

20
SECTION SEVEN: GRQ2 REMOTE SOFTWARE INSTALLATION
You may connect and control up to eight Graphi-Q2s from one COM port. If your computer offers two
COMports,youmaysetuptwodistinctGraphi-Q2networksofuptoeightunitseach—oneforeachport.
Simplyconnectunits in series from theSERIALOUTjack of the previous unittotheSERIAL IN jack of
the next in line. There is no need to complete a connection loop from the last unit in the chain, back to
the computer.
NotethatwithmanyGraphi-Q2sinline,thelastunitsinthechainmayrespondmoreslowly,depending
onhow“busy”theprocessorsofyourunitsare(forexample,FBXprocessingiscomputation-intensive).
Also, commands from the computer controller may sometimes be executed faster than the update of
thescreenthatdisplaystheparameters;inotherwords,thereportoftheexecutionofthecommandmay
lagbehinditsactualcompletion. ThistimedelayisaninherentlimitofRS-232serialconnectionspeed.
7.3. INSTALLING THE SOFTWARE
Follow these simple instructions for installing the Sabine Remote Control Software for the Graphi-Q2:
1. Start Windows 95 or higher.
2. Insert the GRQ-Remote CD into your CD ROM drive.
3. Follow the instructions on the screen. The software will install on your computer.
NOTE:itisrecommendedthatyouallow theinstallertoplacethe Graphi-Q2software inthe
defaultfolderlocation.
4. You now have a Program group window called GRQ Remote and an icon called
GRQRemote.
NOTE:forupdatingsoftwareorre-flashingfirmware,seesection8.10.UpgradingGraphi-Q2Firmware
andSoftware.
TECH TIP
PC can’t find
Graphi-Q2...
Try these tips if you are
having difficulty con-
necting your Graphi-Q2
unit(s) to a Windows
PC.
1. Software Version. Make surethe softwareversioninstalled inyour computeris compatiblewiththe
firmware version of your Graphi-Q2.
2. Check cable. You want a serial 9-pin, not a null modem.
3. COM Port. Make sure the COM Port selected is correct.
4. Refresh your COM Ports.
In Windows, click Start and select Settings, Control Panel.
Double click System.
Click on Hardware, Device Manager and open up Ports (COM & LPT).
Right click the COM Port for your Graphi-Q2 and select Remove (or Uninstall).
Your computer will verify your intent and then reboot. As it reboots, it will rebuild your COM Port file.
This will clean out previous settings for devices no longer attached to your computer and may allow
the Graphi-Q2 software to locate your unit(s).
NOTE: COM Port Properties, Port Settings (Bits per second, Data bits, Parity, Stop bits & Flow control) are
controlled by the Graphi-Q2 Software and need not be adjusted.
Computer
Keyboard
Shortcuts
F8 Front Panel Defaults
F9 View Curves
F11 Link Table
F12 Reset Parameters
Ctrl-A Select GRQ #1
Ctrl-B Select GRQ #2, (etc.)
F2 FBX/Parametrics
F3 Comp/Limiter
F4 Digital Delay
F5 Global Parameters
F6 Stored Presets
F7 Contact Closure
Assignment
Shift-F1 Save snapshot #1
Shift-F2 Save snapshot #2
Shift-F3 Save snapshot #3
Ctrl-F1 Load snapshot #1
Ctrl -F2 Load snapshot #2
Ctrl-F3 Load snapshot #3
Escape Closes current screen
(except main screen)
TECH TIP