Table of Contents
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Summary of Features
GRQ3121 (1U, single channel, one input, two outputs)
GRQ3122 (2U, dual channel, one input & output per channel)
GRQ3121-S (1U, blank front panel slave, single channel, one input, two outputs)
GRQ3122-S (1U, blank front panel slave, dual channel, one input & output per channel)
GRQ2 Remote for Windows
(maximum of 2 COM ports)
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All front panel controls are analog-style; signal path is digital
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"Tweek-n-Peek" feature: Front panel adjustments of all parameters are shown in LED display screen
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24-bit A/D and D/A conversion, 32-bit processing
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20 to 20 KHz Frequency Response
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+18 dBV Maximum Signal Input & Output
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Floating Point SHARC Processor
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>110 dB dynamic range
Each channel provides (now with fully independent processing on 1x2 units):
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31-band graphic EQ, with ± 6 or 12 dB range (selectable)
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Crossover: Bessel, Butterworth, and Linkwitz Reily filters; slopes to 48 dB/octave (Software only)
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High Cut Filter (3KHz to 20KHz) and Low Cut Filter (20 Hz to 1KHz)
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FBX Feedback Exterminator: up to 12 Filters, with Setup Mode (Auto Setup Mode via remote control)
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Parametric Filters: up to 12 filters, numeric or graphic control (Software only)
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Compressor/Limiter, with controls for ratio, threshold, and gain (attack, release, and knee adjustable
with remote)
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Digital Delay, with up to 1 second delay, adjustable in 20 microsecond increments
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Bypass: dedicated switches for FBX, EQ, and Delay with built in LED indicators
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LED Segmented Indicators: FBX Filters, Level, Gain Reduction
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LED Point Indicators: FBX Setup, Remote, EQ Range
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LED Character Display: Delay setting, EQ fader boost/cut, High Cut Filter setting Low Cut Filter setting,
Compressor Ratio, Threshold, Gain, and Staus Messages.
Back Panel:
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XLR & 1/4" TRS inputs & outputs
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RS-232 Serial input & output (additional serial input on the slave front panels)
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Remote switching (8-position contact closure switch; allows switch selection of all 20 stored Graphi-
Q2 presets)
Graphi-Q2 Remote Software Features:
All front panel controls, plus more, including:
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FBX filter depth & width adjustments; switchable to parametric filters (depth, width & frequency
adjustments)
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Graphic EQ filter width adjustments
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Password protection
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View & edit frequency response curves
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20 user-defined stored presets
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Control and link up to 8 Graphi-Q2s (16 channels of audio) per COM port (1 or 2 ports can be used)
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Future-proof FREE Flash RAM upgrade capability: upgrade your firmware and software from the Sabine
website (www.Sabine.com)!
Operating Guide Version 1: for Sabine Graphi-Q2s with:
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GRQ2 Firmware Version 2.20
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GRQ2 Remote Software Version 5.0
TM
Software included with every unit; runs up to 8 Graphi-Q2s per COM port
S
F
UMMARY OF
EATURES
1
B1-GRQ-2-OpGuide-v1-050125.pmd
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Table of Contents
Related Manuals for SABINE GRAPHI-Q2
Summary of Contents for SABINE GRAPHI-Q2
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Page 1: Summary Of Features
Control and link up to 8 Graphi-Q2s (16 channels of audio) per COM port (1 or 2 ports can be used) • Future-proof FREE Flash RAM upgrade capability: upgrade your firmware and software from the Sabine website (www.Sabine.com)! Operating Guide Version 1: for Sabine Graphi-Q2s with: •... - Page 2 Council Directive: 73/23/EEC and 89/336/EEC (EMC Directives) Standards to which conformity is declared: EN 60065: 1993 EN 60742: 1995 EN 55103-1: 1997 EN 55022: 08:94 + a1:05:05 EN 55103-2: 1997 Manufacturer's Signature: Date: October 31, 2002 Name: Doran Oster, Sabine President...
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Page 3: Table Of Contents
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. SYSTEM SETUP SUGGESTIONS ............................. 39 9.2. WIDE & NARROW FILTERS: GRAPHIC, PARAMETRIC, AND FBX ..................40 9.3. -
Page 4: Section One: Introduction
Analog AND Digital - Best of Both Worlds. The Graphi-Q2 combines the best of both worlds. If you need to put your hands on faders and knobs to fully experience audio, we offer you the ease and comfort of our “analog-style”... -
Page 5: Section Two: Analog Vs. Digital Signal Processing (Dsp)
On an analog graphic equalizer, the operator must 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. -
Page 6: Section Three: Front & Back Panel Views
ECTION HREE RONT AND ANEL IEWS Section Three: Front & Back Panel Views 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. EQ faders Status LEDs Input signal &... - Page 7 ECTION HREE RONT AND ANEL IEWS G G G G G R R R R R Q3 Q3122 Front Panel 122 Front Panel 122 Front Panel 122 Front Panel 122 Front Panel G G G G G R R R R R Q3 Q3122 Bac 122 Bac 122 Bac...
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Page 8: Section Four: Block Diagram/Internal Signal Path
ECTION LOCK IAGRAM NTERNAL IGNAL Section Four: Block Diagram/Internal Signal Path... -
Page 9: Section Five: Installation
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 console and the input to a power amplifier. In this configuration the GRQ2 can provide all your system processing, including delay and crossover. -
Page 10: Use With A Powered Mixer
5.4. USE AT A MIXER INSERT POINT The Graphi-Q2 may also be used at a mixer insert point, either for a single input channel, or for a group or bus insert point. This will dedicate all of the features and processing power of the Graphi-Q2 to one or two single channels on your mixer, or to a subgroup of inputs (for example, all the drums in your mix). -
Page 11: Single Channel Graphi-Q2: One Input Two Outputs
2. Do NOT use the Graphi-Q2 in an auxiliary or effects loop, such as would be used to add reverb to different channels in your mixer. Effects loops are designed to split signal paths, and then mix “wet”... -
Page 12: Section Six: Using Graphi-Q2 Front Panel Controls
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. -
Page 13: High Cut/Low Cut Filters
6.2.2. Linking Channel Controls (Two-channel Units) Two channel Graphi-Q2 units offer a useful and unique feature for linking channel controls. Pulling all the A channel EQ sliders to the bottom defeats these controls, and applies the B channel settings to the A channel as well. - Page 14 You’ll know Setup Mode is engaged when the Setup LED (at FBX Setup Mode the right of the front panel) is illuminated. OFF During NOTE: MAKE SURE Setup Mode IS OFF WHEN YOU USE THE Graphi-Q2 OR YOUR AUDIO SIGNAL Performance QUALITY MAY SUFFER! (See Section 6.4.2.3 Setup Mode Cautions).
- Page 15 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 filter sets, another LED will light. A blinking LED indicates which filter was most recently set or made deeper (a filter may start at one depth and notch deeper at the same frequency as the system gain increases).
- Page 16 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 IMPORTANT should be off). Then, make sure your power amplifier is turned up and your microphones are turned Setup Mode needs on.
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Page 17: Compressor/Limiter Controls
(see Section Eight). Note: For a complete discussion on using delays in sound systems (and we mean complete), see Section 9.4. When the Graphi-Q2 is first turned on, the firmware version will display briefly within the Digital Delay LED screen. See Section 6.2.3 for how Tweek-n-Peek uses the Digital Delay LED. -
Page 18: Front Panel Default Settings Adjustable Only By Software
FBX settings but not the graphic EQ. Or you could maintain control over several functions in a Graphi-Q2 network using the software, and allow a guest engineer access to other functions simultaneously during the show. -
Page 19: Section Seven: Grq2-Remote Software Installation
Sabine web site (www.Sabine.com), whenever firmware and/or software upgrades are announced. 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.). -
Page 20: Installing The Software
You may connect and control up to eight Graphi-Q2s from one COM port. If your computer offers two COM ports, you may set up two distinct Graphi-Q2 networks of up to eight units each—one for each port. Simply connect units in series from the SERIAL OUT jack of the previous unit to the SERIAL IN jack of the next in line. -
Page 21: Section Eight: Using Grq2-Remote Software
GRQ2 R ECTION IGHT SING EMOTE OFTWARE Section Eight: Using GRQ2 Remote Software 8.1. WELCOME SCREEN/NETWORK CHAIN SCREEN Refer to Section Seven for instructions about installing the software and connecting your computer to up to eight Graphi-Qs, or 16 channels of audio. You can mix the original Graphi-Qs with the new Graphi- Q2s in a network, but the older Graphi-Qs must come after the Graphi-Q2s in the chain. -
Page 22: Grq Main Screen & Main Functions
GRQ2 R ECTION IGHT SING EMOTE OFTWARE or more Graphi-Qs in your serial chain, the following screen (Network Chain) will appear: This screen shows all of the Graphi-Q units connected to your computer via serial connections from the designated COM port. (Remember the software will allow two separate chains of connected Graphi-Qs, using two different COM ports.) It will also display the serial number of each unit, the model number, and a user-assignable name (Mains, Monitors, etc.). - Page 23 Graphi-Q2 operation (details on these operations follow). NEW for the Graphi-Q2: You can now edit parametric filters by simply clicking on the response curve and drawing a filter. Left clicking and dragging adjusts filter centerpoint and depth. Right clicking and dragging controls filter width.
- Page 24 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...
- Page 25 Raise the master gain slowly (only for the appropriate channel for a 2-channel system) until you hear the first hint of feedback, then click on Auto . At this point, the Graphi-Q2 will take over, and slowly raise its output gain, setting FBX filters sequentially as the gain increases. You will see the filters being set in the FBX/Parametrics screen (the response curve will change and the actual frequency value of the feedback will be displayed) and a display of the amount of gain increase.
- Page 26 2. Setup works best in a quiet environment. Because it relaxes its analysis of what constitutes feedback, Setup mode may cause the Graphi-Q2 to set filters for any sound picked up by a microphone. When in doubt, exit Setup Mode and ring out feedback by raising system gain. The results should be identical, but feedback during setup will be louder.
- Page 27 GRQ2 R ECTION IGHT SING EMOTE OFTWARE 8.2.7. Compressor/Limiter Adjustments Compressor/limiter controls are located below the EQ curve display on the main Graphi-Q remote screen. You may adjust settings by clicking (left button) on a virtual knob or control and moving your mouse, or by clicking with the right mouse button and typing in a value.
- Page 28 8.2.10. Front Panel Control Options The new Graphi-Q2 allows you to selectively lock out each of the front panel control sections. You can, for example, allow a guest engineer to use the graphic EQ while locking out the compressor and FBX controls.
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Page 29: Linking Parameters And Control With The Grq-Remote Software
Link Table Screen. When any parameters for outputs A and B for any Graphi-Q2 unit are linked (either ABS or REL), this condition will be indicated on all appropriate software screens. One or two lines — REL and ABS respectively —... - Page 30 8.3.2. Special Linking Considerations 8.3.2.1. GRQ3121 and GRQ3121-S units Both models of the Sabine Graphi-Q2 that offer one channel input provide two independent outputs (see Section 5.5). This is a very useful feature that enables a single input unit to emulate two-channel operation, with additional control over the two outputs accessible with the Sabine GRQ2 Remote Software.
- Page 31 -- the stereo image will shift. To preserve channel balance yet still allow compression, Sabine offers another method of linking left and right channels of GRQ3102 and GRQ3102-S models: True Stereo compression. In True Stereo mode, both channels are compressed equally if the threshold is exceeded in either channel.
- Page 32 8.3.2.11. Front Panel Mode and Linking Any Graphi-Q under front panel control CANNOT be part of a linked network. Any Graphi-Q2 that is linked, then changed to front panel control, will be removed from the linked network. The unit will remain unlinked even if remote control is restored.
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Page 33: Reset Parameters
GRQ2 in a linked chain. Printing can be done in Remote Control or Demo modes. In addition to printing a record of parameter settings for an individual Graphi-Q2, you may elect to print a record of how controls are linked for a multiple-unit Graphi-Q2 system. Simply select “PRINT” from within the link table. - Page 34 (e.g., PROG 1). Programs 2 through 20 will only allow remote control of the Graphi-Q2, and front panel adjustments made when the remote control is in command will be ignored (unless you have chosen Mixed Control see section 8.2.10).
- Page 35 Graphi-Q2. This connector plugs into its mate in the back of the Graphi-Q2 chassis. The far left pin (as you look from the back) of the connection is the ground (common). The other end of the cable must be wired such that switch position one grounds pin one, position two grounds pin two, etc.
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Page 36: Assigning Names To Graphi-Qs
Note that initial contact closure switch assignments require the Remote Control software, but once assigned, presets and memories can be loaded into the Graphi-Q2 simply by choosing the appropriate switch position. Momentary contact is all that is needed to load a new memory into the Graphi-Q2. 8.6.2.3. Contact closure changes with multiple units In conditions where multiple Graphi-Qs are wired in parallel from a single contact-closure switch, ground loop problems can easily arise. -
Page 37: Password Protection With Grq-Remote Software
PASSWORD screen. If you forget your password, call Sabine for the secret backdoor password, and be prepared at the time of your call to prove you own the unit! 8.8.4. -
Page 38: Navigating With Multiple Units
8.10. UPGRADING GRAPHI-Q2 FIRMWARE & SOFTWARE One more great feature of the Graphi-Q2 is its easy upgradability. Each units firmware (think of it as the operating system) is stored in on-board FLASH RAM, which means you can upgrade the system by loading in the latest firmware. -
Page 39: Section Nine: Suggestions For Optimal Use Of The Graphi-Q2
ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI Section Nine: Suggestions for Optimal Use of the Graphi-Q Like any powerful tool, the Graphi-Q offers an infinite number of possible control configurations, and the choices may at times appear overwhelming. Here are some helpful considerations for maximizing the audio quality of your sound system by taking advantage of the many powerful features of your Graphi- 9.1. -
Page 40: Wide & Narrow Filters: Graphic, Parametric, And Fbx
It depends entirely on the intended use of the equalizer in question. There are at least two basic design intentions of equalizers, both of which are designed into the Sabine Graphi-Q: •... -
Page 41: Recommended Eq Usage
REFERENCE MICROPHONE. If you’re using a reference microphone and a Real Time Analyzer (such as those integral to the Sabine Power-Q or Real-Q2), you may also wish to study the results with the microphone at several locations. We recommend using a flat response, free-field reference microphone such as the Sabine SQ1001. -
Page 42: Using Digital Delay
These conversion delays are often called processing (or group) delays, and usually range between 0.9 and 5 milliseconds. You will notice that Sabine delays always display the processing delay as the smallest possible delay value. For the Graphi-Q, the processing delay is 1.38 milliseconds. You can bypass the unit for 0 seconds delay. - Page 43 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI 9.4.1.3. Center Cluster Speakers Center cluster speakers offer several advantages over systems that have speakers mounted on the sides. The most obvious advantage is that the distance to the closest and most distant locations in the audience is often almost equal, so most listeners hear about the same level.
- Page 44 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI 9.4.2.1. Calculating Comb Filter Frequencies The frequencies of the reinforcements and cancellations depend on the delay time (the time difference between the arrival time of the original signal and the delayed signal). The frequency of the first cancellation occurs at 1/(2t) Hz, where t = the delay time in seconds.
- Page 45 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI Increasing the loudness more than this, or increasing the delay somewhat more than 35 milliseconds, makes the delayed signal sound like an echo. The phenomenon describing how the acoustic image follows the signal we hear first is called the Precedence Effect.
- Page 46 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI Find a central place in the audience where the center cluster is 6 to 8 dB louder than the direct sound from the performer. Delay them so that their sound arrives 5 to 8 milliseconds after the direct sound from the performer.
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Page 47: Using The Compressor/Limiter
ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI 9.5. USING THE COMPRESSOR/LIMITER The dynamic range (how loud we can hear to how quiet a sound we can detect) of the human ear is far greater than the capacity of sound systems to reproduce. Although some of this equipment limitation is at the upper extreme of the dynamic range (where too loud a signal will produce distortion), much of the restriction occurs at the low level end, where the signal disappears below the “noise floor”... - Page 48 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI 9.5.2. Compressor/Limiter Adjustments Output Output allows you to vary the signal gain after it has been compressed. Without this control, the output signal level would fall below the input, since the function of the compressor is to restrict the increase in gain of signals louder than a user- defined threshold.
- Page 49 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI Limit Limit sets an absolute output gain level. Peak input signals rising above the threshold value set with this parameter will be compressed so extremely as to reflect no additional gain at the output stage. Note that the Limit threshold and the compressor threshold (Thresh) can be set independently, allowing both a mild degree of compression and brick wall peak limiting.
- Page 50 ECTION UGGESTIONS FOR PTIMAL SE OF THE RAPHI 9.5.3. Suggested Compressor Settings VOCAL COMPRESSION The renowned expressive- ness of the human voice is due in large part to its dynamics. A vocal that varies from a whisper to a scream has a strong emotional impact, but those same dynamics present a challenge to the sound engineer.
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Page 51: Section Ten: Troubleshooting Tips
In the unlikely event you should experience trouble with the unit, here are some suggestions about what might be wrong. Some of these are pretty obvious, but so sometimes are the solutions! For additional assistance, call the Sabine Customer Service Department at (352) 418-2000, Monday through Friday, 9:30 a.m. to 5:30 p.m. Eastern. - Page 52 Resume control via GRQ2 Remote or contact switch. In a pinch short the extreme left & right pins of the back panel contact connector. REMOTE CONTROL DOESN’T Is your Graphi-Q2 in front-panel mode? Load any Stored Preset WORK other than #1. SIGNAL LOSES GAIN GOING Check output level.
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Page 53: Section Eleven: Graphi-Q2 Engineering Specifications
Operating system firmware stored in FLASH RAM. All future able, 0-12; plus low and high cut filters upgrades for firmware and software downloadable from Sabine CROSSOVER website using the Sabine Upgrade Wizard (see Section 8.10). 1x2; available in all Graphi-Q2 units POWER Bessel, Butterworth, Linkwitz-Reily filters 50/60 Hz available in 100 V, 120 V, 230 V;... -
Page 54: Section Twelve: Cautions & Warranty
ECTION WELVE AUTIONS AND ARRANTIES Section Twelve: Cautions & Warranty Warn ing! This equipment must be earthed. Caution! Risk of electric shock. Do not open. Caution! Shock hazard. Do not remove covers. No user serviceable parts inside. Warning! Refer servicing to qualified service personnel. Warning! To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. -
Page 55: Limited Warranty
Sabine’s negligence. Sabine does not assume liability for WARRANTY AND SERVICES TO BE SPECIFIED AND PROVIDED BY THE AUTHORIZED personal injury or property damage arising out of or caused by a non-Sabine alteration or DISTRIBUTOR FOR EACH COUNTRY. - Page 56 INDEX Symb Symb Symb Symb Symbols Filters (High & Low Cut) 13 Output Level (& Reset Parameters) 32 Firmware (Recalibrating Front Panel after Upgrade) 12 Output Level (EQ in Software) 23 25-pin connector 19 Firmware (Upgrading) 38, 19 A A A A A P P P P P Firmware (Version in Digital Delay display) 6 Acoustic Image 42, 44, 45...
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