dbx goRack - Owner`s Manual
Contents
1. 3 While auditioning the sound source s turn the VOLUME EDIT encoder to set the desired amount of sub synth effect 4 When done press any button to exit Edit mode IMPORTANT The subharmonic synthesis process produces low frequency audio signals that some speakers may not be designed to reproduce Attempting to achieve enhanced low end with these systems may not be possible and may result in over stressing your loudspeakers If you can t hear a discernable difference when raising the sub synth effect it is recommended that you disable the effect For best results subwoofers should be used with the sub synth effect TIP you experience low frequency artifacts on a voice when using subharmonic synthesis with a dedicated mixer try engaging a high pass filter using or a combination thereof on the vocal s mixer channel to reduce the artifacts If a high pass filter and EO are not enough try lowering the amount of subharmoic synthesis applied to the signal If you re using the goRack as a 2 chanel mixer and you wish to use subharmonic synthesis processing on music played through the goRack s AUX INPUT jack and don t want vocals or instruments to be treated with the sub synth effect select the goRack s routing option See Configuring The goRack s Routing o2. dbx vy HARMAN 1 Please register your product online at dbxpro com Proof of purchase is considered to be the responsibility of the consumer A copy of the original purchase receipt must be provided for any warranty service 2 dbx warrants this product when purchased new from an authorized U S dbx dealer and used solely within the U S to be free from defects in materials and workmanship under normal use and service This warranty is valid to the original purchaser only and is non transferable 3 dbx liability under this warranty is limited to repairing or at our discretion replacing defective materials that show evidence of defect provided the product is returned to dbx WITH RETURN AUTHORIZATION from the factory where all parts and labor will be covered up to a period of two years A Return Authorization Number must first be obtained from dbx The company shall not be liable for any consequential damage as a result of the product s use in any circuit or assembly 4 dbx reserves the right to make changes in design or make additions to or improvements upon this product without incurring any obligation to install the same additions or improvements on products previously manufactured 5 The foregoing is in lieu of all other warranties expressed or implied and dbx neither assumes nor authorizes any person to assume on its behalf any obligation or liability in connection with the sale of this product In no event shall dbx or its
3. and dance DJ mixing theatre and film sound sound design music recording live music performance and broadcasting In certain applications using traditional EQ to enhance this extremely low frequency region typically does not provide desirable results and can increase noise potential and stage rumble low frequency feedback in live PA systems Another problem is that the audio source may not have sufficient low end in this region to boost or the mics used to capture the sound may not capture these extremely low frequencies Subharmonic synthesis looks at frequencies around 100 Hz in the audio program and creates synthesized frequencies an octave below providing noise free low end enhancement that people can really feel Subharmonic synthesis is best suited for sound systems utilizing subwoofers and in applications where deep low end response is required Available Subharmonic Synth Parameter SUBHARMONIC SYNTHESIS LEVEL 1 99 Adjusts the amount of subharmonic synthesis effect added to the signal with 1 being essentially no effect and 99 being the maximum amount of effect To use the Subharmonic Synthesizer 1 Press the SUB SYNTH button to enable the Sub Synth module the LED will light indicating the processing module is enabled 2 To edit the sub synth press and hold the SUB SYNTH button for 2 seconds the SUB SYNTH LED will flash indicating Sub Synth Edit mode is active
4. dedicated mixer and the goRack is used for system processing only The goRack s two combination MIC LINE inputs can be connected to the mixer s left right master outputs Stereo imaging will be maintained through the system when using the LEFT RIGHT inputs and the pan pots on the mixer can be used to place sound sources in the stereo field if required Application Notes Make sure your mixer and powered speakers or amplifiers are turned off before making connections Make connections as described in Making Connections on page 5 then apply power to the system according to the instructions described in Applying Power page 5 The routing 2 option will work best for this application See Configuring The goRack s Routing on page 6 for information on goRack routing options Set to LINE Included Harman Power Adapter Set to LINE Right Master Out u n n n n n o n nu doooolloo BRoooofo oooofoooo oooofeooofo Hoo coffe B fe Ho oo off fo ec offe doooolo GGGO GOGO Line Inputs mm o umm o n 0009 1 Powered Speaker Speaker Powered NOTE For best noise performance balanced cables XLR or 1 4 TRS Phone should be used between the mixer and goRack if the mixer s outputs are balanced See Audio Cable Diagrams page 26 for more inform
5. the compressor Operating The goRack This section of the manual describes the processing types available and how to operate the goRack Master Volume When the goRack initially boots the VOLUME encoder will control master output volume This is the default operating mode Volume is controlled post compression and pre limiting To adjust master volume 1 Turn the VOLUME encoder clockwise to raise the output volume or counter clockwise to lower the volume Output Limiter amp Clipping A non editable limiter is in place on the outputs to prevent harsh digital clipping You may hear the limiter affecting the signal if your output levels get too close to clipping A small dot in the lower right hand corner of the display will light if the output channels are driven into clipping This occurs if you have added too much gain to your signal via the Compressor Sub Synth or EQ processing modules If you see this dot light your signal is clipping and you need to turn it down The easiest way to do this is to lower the master volume using the VOLUME encoder You may also want to adjust your input gains Compressor amount Sub Synth amount or EQ setting to help avoid clipping Anti Feedback Feedback is caused when an in phase audio loop is created between an input transducer such as a guitar pickup or microphone and an output transducer a loudspeaker The goRack includes
6. FRAGILE Insure the package properly Ship prepaid not collect Do not ship parcel post Table of Content OvervieW a nennen Introduction c 2 User Interface amp Connectors esee ns 3 Top Panel uud Rear Panel Setup 5 Making 5 Configuring The goRack s Routing 6 Setting Initial System Levels 2 secret tinte cosid 8 Operating The goRack Master TOT c M Output Limiter amp Clipplng iint ctr terat AntrFeedback iiut mto teinte i ise nbl esi jeu M S Subharmonic Synthesizer Application Diagrams ressent ennt tn nnnm annuas 22 Application 1 Speech Presentation sss 22 Application 2 Solo Artist Duo Performance sse 23 Application 3 Band Performance D J seen 24 Application 4 Using Powered Subwoofers sss 25 Technical Information rennes nmn 26 Audio 26 27 Additional ResOUrCes nere enne nenne anna nmn aan na anna 28 Introduction The dbx goRack is an easy t
7. H gt S lt S O NT m uw Lr LA SIGNAL Iu 4 With signal present on the LEFT RIGHT inputs adjust the LEFT and RIGHT input gain knobs until the INPUT SIGNAL LEDs occasionally light orange Note that the INPUT SIGNAL LEDS also indicate signal level for the AUX input However the LEFT RIGHT input gains will only adjust level for the LEFT RIGHT inputs Levels for the AUX input should be adjusted using the output level control available in the connected device Amplifier or Speakers 5 Turn up the volume on your amp or powered speakers until the desired level is achieved do not turn them up so far that the crown Clip or Limit LEDs light If Clip or Limit LEDs light the volume WEN Qm Sw controls should be lowered until they no longer light i k GAY LO XLi 800 Mic Line fon Rack RIGHT 6 Further system level adjustments can be made during the performance using the goRack s VOLUME encoder if required ANTI FEEDBACK Hous Ebr TIP f additional system level is required or the source levels are too dynamic meaning the source levels vary dramatically between soft and loud try enabling and adjusting the compressor See Compressor on page 14 for further information on using
8. Subharmonic Synthesiser EQ Equalizer To select a Routing option 1 Press and hold the MUTE MODE button for 2 seconds the LED will flash indicating Route mode is active 2 Select the desired option by turning the VOLUME EDIT encoder 3 When done press any button to exit Route mode Rack INPUT SIGNAL o diio ES Fam C Iu 1987 a F TE TE COMPRESSOR sup SYNTH uw gt MUTE ANTI FEEDBACK Rack INPUT SIGNAL SUB SYNTH Setting Initial System Levels Properly setting system levels will help keep distortion and noise levels down improve anti feedback operation and provide ample headroom for clean and safe operation of the sound system To set system levels 1 Turn down your amp or powered speaker levels If your powered speakers have Mic Line switches set them to Line 2 Make sure all processors are turned off 3 Turn the VOLUME encoder to 70 XLi 800 Amplifier or Powered Speakers Signal Limit Signal Mic Line is e ANTI FEEDBACK COMPRESSOR Rack INPUT SIGNAL s Ground Lift SN SUB SYNTH ANTI FEEDBACK COMPRESSOR SUB SYNT
9. Weight Dimensions 2 independently switchable between mic or line level Female 14 XLR combination Electronically balanced RF filtered Switch set to MIC 2 balanced Switch set to LINE 22 balanced Switch set to MIC 48 dB Switch set to LINE 5 dB Switch set to MIC O dBu Switch set to LINE 20 dBu gt 45 dB 1 Female stereo 1 8 3 5 mm TRS mini Unbalanced RF filtered 20 20 dBu 2 line outputs Male XLR Impedance balanced RF filtered 409 14 24 bit 115 dB A weighted 24 bit 106 dB A weighted 32 bit floating point 48 kHz 103 5 dB A weighted 102 5 dB unweighted 0 04 typical at O dBu in out 1 kHz 20 Hz 20 kHz 0 0 5 dB lt 80 dB 84 dB typical Input to output 3 4 ms PS0913DC 04 9 VDC 100 240 VAC 50 60 Hz 4 5 Watts 500 mA 1 2 Ibs 0 54 kg 2 04 Ibs 0 93 kg 6 1 L x 4 1 W x 1 69 H 154 9 mm L x 104 1 mm W x 42 9 mm H Specifications subject to change without notice EEEEEEEEEEHEZLIGLLGUIGEGAG D RLAALA LALADGG 27 Additional Resources dbx Website http dbxpro com goRack Product Page http dbxpro com en US products goRack dbx Support http dbxpro com en US support dbx User s Forum http dbxpro com forum Phone 801 566 8800 Website dbxpro com Support dbxpro com en US support dbx Professional Products is a registered trademark of Harman 2015 Harman All righ
10. a constant Q of 7 at or above 76 Hz This option is optimized for speech SPEECH sound reinforcement where wider notch filters are less noticeable Select WIDE this option when using the sound reinforcement system for speech only With this option selected notch filters will be wider but will provide the fastest most solid protection against feedback WARNING if AFS is turned on and filters are set in use be careful when turning AFS off as all filters will be immediately removed from the signal path and sudden feedback could occur It is recommended that you lower your mixer output volume or the goRack s output volume before turning AFS off NOTE When all the AFS filters have been set they will begin to round robin meaning that if all filters have been set and new feedback occurs the first filter set will be released then re set at the new feedback frequency location To use Anti Feedback 1 Press the ANTI FEEDBACK button to enable the Anti Feedback module the LED will light indicating the processing module is enabled 2 To adjust the filter width options press and hold the ANTI FEEDBACK button for 2 seconds the ANTI FEEDBACK LED will flash indicating Anti Feedback Edit mode is active 3 Turn the VOLUME EDIT encoder to select the desired filter width option see Available Anti Feedback Options on page 12 for option descriptions 4 When done press any button to exit Edit mode Note that
11. any set AFS filters will be automatically cleared whenever the AFS button is disabled or the goRack is power cycled Compressor A compressor is used to compress the dynamic range of the audio signal bringing up the softer portions of the signal and lowering the louder ones In live sound applications it is common to compress the audio at different stages in the signal chain For example you may apply compression to individual instruments using the mixer s channel inserts It is also common practice to apply compression to a group of instruments using the mixer s bus or group inserts You can also apply a final stage of compression to the entire mix commonly referred to as mixbus compression in order to add some additional body and glue to the mix If connecting microphones or instruments directly to the goRack and using it as a 2 channel mixer more compression can be used in order to level out the sound sources and provide a more consistent and professional sound on dynamic sources such as vocals speech acoustic guitar and bass If using a dedicated mixer along with dedicated compression on individual channels the compressor in the goRack can be used more judiciously for adding a small dose of additional dynamics control to
12. ation on these cable types Application 4 Using Powered Subwoofers This application is just like application 3 but with the addition of subwoofers and is better suited for larger DJ or live performance applications This type of configuration allows the goRack s sub synth processing to be fully utilized Powered subwoofers designed for live sound use typically contain a built in active crossover and additional line level outputs that can be connected to the main powered speakers eliminating the need for an external active crossover Application Notes Make sure your mixer and powered speakers or amplifiers are turned off before making connections Make connections as described in Making Connections on page 5 then apply power to the system according to the instructions described in Applying Power on page 5 The routing 2 option will work best for this application See Configuring The goRack s Routing on page 6 for information on goRack routing options Set to LINE Included Harman Power Adapter Set to LINE Right Master Out foo coffe foo 0 ofo Powered Main Speaker Powered Main Speaker 0000 OO00 Powered Powered Subwoofer Subwoofer NOTE For best noise performance balanced cables XLR or 1 4 TRS Phone should be used between the mixer and goRack if the mixer s outputs are balanced See Audio Cab
13. dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control Technical Support amp Service If you require technical support contact dbx Technical Support Be prepared to accurately describe the problem Know the serial number of your device this is printed on a sticker attached to the chassis Before you return a product to the factory for service we recommend you refer to this manual Make sure you have correctly followed installation steps and operating procedures For further technical assistance or service please contact our Technical Support Department at 801 566 8800 or visit dbxpro com If you need to return a product to the factory for service you MUST first contact our Technical Support Department to obtain a Return Authorization Number NO RETURNED PRODUCTS WILL BE ACCEPTED AT THE FACTORY WITHOUT A RETURN AUTHORIZATION NUMBER Please refer to the Warranty information which extends to the first end user After expiration of the warranty a reasonable charge will be made for parts labor and packing if you choose to use the factory service facility In all cases you are responsible for transportation charges to the factory If the product is still under warranty dbx will pay the return shipping Use the original packing material if it is available Mark the package with the name of the shipper and with these words in red DELICATE INSTRUMENT
14. g dbx Features 48 kHz 24 Bit Processing 3 Routing Options Dual Mono Sum Stereo amp Advanced Anti Feedback Using dbx s Proprietary Advanced Feedback Suppression Algorithm dbx Compression dbx Subharmonic Synthesis For Deep Punchy Bass 16 Selectable EQ Curve Presets 2 Combination XLR TRS Inputs Selectable Between Mic or Line Level Stereo 1 8 Aux Mini Input e 2 XLR Outputs e Output Mute Button e 7 Segment Display Independent Mic Line Input Level Controls Included Power Adapter User Interface amp Connectors Top Panel 1 7 Segment Display st This display shows selected options and processor settings VOLUME EDIT Encoder This rotary encoder is used for adjusting the goRack s output volume or for editing settings after pressing and holding any of the processor buttons LEFT RIGHT Input Gain Knobs Adjust these gains to optimize the signal levels for the main LEFT RIGHT inputs The MIC LINE switches on the rear panel should be set to the correct position for the application before Son Sus evans 5 adjusting these knobs NOTE AUX INPUT signals are not affected by the Input Gain knobs N INPUT SIGNAL LEDs 5 6 These multi colored LEDs display the input signal level strength and available headroom Green Indicates signal is present Orange Indicates the sig
15. iption This EQ curve will enhance the bass while simultaneously scooping out some lower midrange mud and slightly reducing the midrange and treble frequencies providing a deeper sub bass sound Select this curve to tame treble frequencies when a system sounds overly bright and harsh It is similar to lowering the HIGH tone control on a stereo system This curve is optimized for live reproduction of an acoustic guitar performance This curve is well suited for the reproduction of a live rock music performance This EQ curve can be used to balance the system when operated at louder levels This EQ curve can help add midrange definition to a sound system that lacks it EQ Presets EQ Curve Option Name m Treble Boost Description This EQ curve can reduce mud which can build up around the 300 Hz region This curve can help reduce low frequency noise and increase intelligibility in systems reproducing speech only This curve can help tame a system that sounds boxy or has excessive midrange frequencies and make it sound more musical Select this curve to tame bass and lower midrange frequencies when a system sounds boomy and muddy and is similar to lowering the LOW tone control on a stereo system This curve is optimized for the reproductio
16. le Diagrams on page 26 for more information on these cable types EREEEEEEEEMEILILLGILOCOEECILKLOARELAALAALLALLAALAOGG D Technical Information Audio Cable Diagrams FROM SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT SLEEVE SLEEVE LEFT GROUND GROUND LEFT LEFT RIGHT SLEEVE RING RING RIGHT RIGHT 3 5 mm TRS MINI TO TRS MINI FROM SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT SLEEVE SLEEVE GROUND GROUND HOT SLEEVE 1 4 TS PHONE TO TS PHONE FROM SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT RING SLEEVE SLEEVE RING COLD GROUND GROUND COLD SLEEVE COLD 1 4 TRS PHONE TO TRS PHONE FROM SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT SLEEVE FEMALE XLR TO MALE XLR Specifications INPUTS Mic Line Number of Inputs Connectors Type Impedance Max Gain Max Input Level CMRR Aux Number of Inputs Connector Type Impedance Max Input Level OUTPUTS Number of Outputs Connectors Type Impedance Max Output Level MIC LINE A D amp D A PERFORMANCE Converters Dynamic Range AUX INPUT A D PERFORMANCE D A Converter D A Dynamic Range SYSTEM PERFORMANCE Internal Processing Wordlength Sample Rate Dynamic Range THD Noise Frequency Response Interchannel Crosstalk Latency POWER SUPPLY Model Operating Voltage Power Consumption PHYSICAL Unit Weight Shipping
17. n of a live jazz performance This curve can help add top end air and clarity to a speaker system that lacks it and is similar to raising the HIGH tone control on a stereo system EQ Presets EQ Curve use the EQ 1 Press the EQ button to enable the EQ module the LED will light indicating the processing module is enabled 2 To change the EQ setting press and hold the EQ button for 2 seconds the EQ LED will flash indicating EQ Edit mode is active 3 While auditioning the sound system turn the VOLUME EDIT encoder and select the EQ curve that sounds best for the application 4 When done press any button to exit Edit mode Rack staat oy m 71 l m B Neo YY YH N pce ANTI FEEDBACK SYNTH uw PN ATE Rack SIGNAL e 7 ANTHFEEDBACK COMPRESSOR sup SYNTH O O O O Nu P uA Iu XQ J Eu 1 MUTE ANTI FEEDBACK COMPRESSOR SUB SYNTH Application Diagrams Use these diagrams and notes for reference when initially connecting and c
18. n page 6 for more information on changing routing options EQ Various factors will determine how a sound system will sound in a room such as the frequency response of the speakers the frequency response of any microphones or instruments used and the room acoustics to name a few The goRack has 16 EO preset curves to select from These EQ preset curves can be used to quickly tune the frequency response of the sound system to help compensate for some of these limitations and help improve clarity and impact The EO can be turned on or off using the EQ button Available EQ Presets The following table describes each of the available EO preset curves EQ Presets Description EQ Curve This EQ curve can help when the system sounds thin and lacks body and is similar to raising the LOW tone control on a stereo system Select this curve when the system has body but lacks definition in the bass This EQ curve works well when the system is slightly bright and the bass frequencies are lacking Try this curve when the room is a bit reverberant due to brightly reflective surfaces such as windows This curve provides enhanced bass and treble frequencies with a midrange scoop and is well suited for Electronic Dance and Pop Music or DJ use This is the classic smiley face EQ curve Option Name Treble Cut Mid Boost Descr
19. nal level is approaching the headroom limit Red Indicates the input signal is clipping and the input gain should be reduced MUTE MODE Button Pressing this button will mute unmute the goRack s outputs Pressing and holding this button for 2 seconds enters Routing mode indicated by a flashing LED where you can select a routing option See Configuring The goRack s Routing on page 6 for more information on the routing options available in the goRack Processor Buttons Pressing each of these buttons will enable disable the corresponding processor type LED off processor disabled LED on processor enabled Pressing and holding each button for 2 seconds will enter Edit mode indicated by a flashing LED where the selected processor can be edited using the VOLUME EDIT encoder Rear Panel 1 LEFT RIGHT Combination Input Jacks Connect your mixer microphone or instrument outputs to these combination 1 4 XLR input jacks The input sensitivity of these jacks are set using the MIC LINE switches next to each jack T and the input gain can be adjusted using to the 97 lt 3 top panel LEFT RIGHT input gain knobs fone W OUTPUTS The input signals can be routed in stereo or mono _ summed to the output jacks See Configuring The goRack s Routing on page 6 for more information on the Routing modes available in the goRack 2 MIC LINE Switche
20. o operate portable loudspeaker processor Based on our industry leading DriveRack Series processors the goRack sits next to a set of powered speakers and provides powerful signal processing including Anti Feedback Compression Subharmonic Synthesis and EO Each processing function can easily be enabled or disabled via the top panel buttons and settings can be adjusted via the goRack s large rotary encoder The goRack can be used to provide loudspeaker processing in a conventional sound system by placing it between the mixer and powered speakers amplifiers or as a stand alone 2 channel mixer loudspeaker processor making it ideal for band rehearsal spaces live performance of solo artists or duos weddings or speech presentation applications The goRack s rear panel houses combination 1 4 XLR inputs that can be connected to either mixer outputs or straight to instrument or microphone outputs The Mic Line switch on each input selects the proper input sensitivity while dual gain controls on the top panel provide independent level adjustment The goRack s stereo 1 8 Mini Aux Input allows for direct connection of a mobile device or portable music player The XLR outputs allow for interfacing with powered speakers or stand alone amplifiers The goRack represents the best of dbx s DriveRack processing in its purest most simplified form all housed in a sleek compact form factor that fits in your hand or back pocket Thanks for choosin
21. ocessing The goRack s two combination MIC LINE inputs can be used for connecting microphones or direct instruments The AUX INPUT can be used for connecting a mobile device or music player for backing tracks or music playback between sets Application Notes Make sure your powered speakers or amplifiers are turned off before making connections Make connections as described in Making Connections on page 5 then apply power to the system according to the instructions described in Applying Power on page 5 The routing 3 option will work best for this application See Configuring The goRack s Routing on page 6 for information on goRack routing options Included Harman Power Adapter Line Inputs Microphone Acoustic Guitar Portable Powered Powered w Pickup Music Player Speaker Speaker Optional NOTE stereo Tip Ring Sleeve Mini cable should be used for the connection between the portable music player and AUX INPUT If connecting instruments to the goRack s LEFT RIGHT inputs using 1 4 plugs unbalanced TS Tip Sleeve instrument cables should be used See Audio Cable Diagrams page 26 for more information on these cable types EREEEEEEEEHELEEZIIHGIGIXLE A LELOLU IOUOO 22 Application 3 Band Performance DJ This application is suited for band rehearsal spaces small venue live performances or small DJ applications where the sound system already consists of a
22. on Diagrams on page 22 for application notes and system diagrams which can be used for reference when connecting the goRack to your system See Audio Cable Diagrams page 26 for information on cable wiring Applying Power 1 Ensure your power amplifiers or powered speakers are turned off 8 fS 2 As shown in the illustration to the right pinch the power adapter cord together leaving approximately 2 inches of cable before the power plug then route the cord into the cord retaining clip on the goRack s rear panel 2 HLAS 2 3 Connect the power adapter jack to the DC power input 4 Apply power to the goRack by connecting the other end to an available AC power outlet Since the goRack does not have a power switch an AC power strip or power conditioner can be used for switching power to the goRack on or off 5 Apply power to your mixer then your power amplifiers or powered speakers WARNING When powering up a fully connected PA system it is advisable to ALWAYS turn on the goRack and mixer if applicable first then turn on your amplifiers or powered speakers last It s also a good idea to ensure the goRack VOLUME or mixer output gains are reduced before applying power to the amplifiers When powering down the system you should ALWAYS power down the amplifiers powered speakers first wait about 10 seconds to allow them to discharge then power down the goRack and mixer if applicable In short ever
23. onfiguring the goRack for your application Application 1 Speech Presentation This application is suited for speech presentation applications and provides a 2 channel mixer aux input and system processing The microphone can be connected to the goRack s MIC LINE 1 input If a second microphone is required the MIC LINE 2 input can be used The AUX INPUT can be used for connecting a portable device for audio playback Application Notes Make sure your powered speakers or amplifiers are turned off before making connections Make connections as described in Making Connections page 5 then apply power to the system according to the instructions described in Applying Power on page 5 The routing 3 option will work best for this application See Configuring The goRack s Routing on page 6 for information on goRack routing options Included Harman Power Adapter Stereo Cable L Line Inputs Microphone Portable Powered Powered Device Speaker Speaker Optional NOTE stereo Tip Ring Sleeve Mini cable should be used for the connection between the portable device and AUX INPUT See Audio Cable Diagrams on page 26 for more information on these cable types 2 Application 2 Solo Artist Duo Performance This application is suited for solo artist duo performance applications and provides a 2 channel mixer with system pr
24. put gains Available Anti Feedback Options The Anti Feedback options available in the goRack allow you to adjust the width of the notch filters A description of each of these options is provided in the following table Anti Feedback Width Options Application Type Description This setting has a constant bandwidth of 8 Hz below 927 Hz and a constant Q of 116 at or above 927 Hz This option is optimized for live music sound reinforcement and offers the highest level of sonic quality When this option is selected the AFS algorithm will zero in on the NARROW offending feedback frequency while leaving the surrounding frequencies unscathed With this option selected the AFS filters will take slightly longer to set than when using the MUSIC SPEECH setting although the difference in time will be quite negligible This setting has a constant bandwidth of 9 Hz below 260 Hz and a constant Q of 29 at or above 260 Hz This option is optimized for live music or speech sound reinforcement and provides the best all around MUSIC SPEECH protection It will provide the best combination of fast feedback MEDIUM suppression and precision using filters slightly narrower and less audible than the SPEECH setting but slightly faster than the MUSIC setting If you re not sure which setting to use or the system is being used for music and speech sound reinforcement select this option This setting has a constant bandwidth of 11 Hz below 76 Hz and
25. s Match these swtches to the type of connections being made to the input jacks Select the LINE option when connecting the outputs of a line level device such as a mixer or the output of an instrument with a built in pickup Select the MIC option when connecting a microphone 3 AUX INPUT Jack Connect a mobile device or portable music player to this 1 8 3 5mm stereo Mini jack There are a couple of different processing routing options available for this jack see Configuring The goRack s Routing page 6 for more information 4 XLR Output Jacks Connect these electronically balanced XLR outputs to the amplifier or powered speaker inputs 5 DC Power Input Jack Connect the included Harman power adapter to this power input jack 6 Power Adapter Cord Retaining Clip Route the power adapter cord through this retaining clip to prevent accidental removal of the power plug see Applying Power on page 5 for more information Making Connections Audio Connections 1 Ensure the power is turned off on all interconnecting equipment and the goRack before making audio connections 2 Connect the outputs of the mixing console microphones or instruments to the inputs of the goRack and set the goRack s MIC LINE input switches accordingly Use the highest quality cable available with the shortest possible cable runs 3 Connect the goRack s outputs to the amplifier or powered speaker inputs TIP See Applicati
26. sor Available Compressor Parameter COMPRESSION AMOUNT 1 99 Adjusts the amount of compression applied with 1 being essentially no compression and 99 being the maximum amount of compression To use the Compressor 1 Press the COMPRESSOR hutton to enable the Compressor module the LED will light indicating the processing module is enabled 2 To edit the compressor press and hold the COMPRESSOR button for 2 seconds the COMPRESSOR LED will flash indicating Compressor Edit mode is active 3 While auditioning the sound source s turn the VOLUME EDIT encoder until the desired amount of compression is achieved 4 When done press any button to exit Edit mode NOTE Applying too much compression can have adverse side effects such as level pumping or potential increased risk of system feedback If these conditions occur it is recommended that the compression amount be reduced NOTE When applying compression make sure the Clip or Limit LEDs on your amp or powered speakers do not light Subharmonic Synthesizer dbx subharmonic synthesis or sub synth processing has been specifically optimized to enhance the low frequencies in audio material and was designed for use in a variety of professional audio applications including nightclub
27. the entire mix Typically a compressor has two three or more parameters to adjust making them difficult to set for the novice user The most common parameters on a compressor are the threshold ratio and makeup gain The threshold sets the level at which compression will occur the ratio sets how much compression will occur once the threshold is exceeded and the makeup gain raises the output level to compensate for level lost due to compression Oftentimes there will also be attack and release controls for adjusting how quickly the compressor will react and release its compression Compressors also have a knee which affects the transition in and out of compression A compressor s knee can be hard soft or selectable between the two A hard knee compressor provides a more aggressively compressed sound whereas a soft knee compressor will typically sound more gentle and smooth OverEasy is the term used for dbx soft knee compressors The compressor in the goRack is modeled after the classic dbx 163 analog compressor line It is a soft knee OverEasy compressor with a fixed ratio of infinity 1 program dependent auto attack and release times and one parameter which affects both the threshold and makeup gain under the hood The soft knee compression curve helps prevent over compression due to the high ratio used The combination of these features make it very easy to obtain professional results with minimal effort when setting the goRack s compres
28. the exclusive AFS Advanced Feedback Suppression algorithm to help combat this dreadful phenomenon The 10 Live AFS filters will automatically detect and suppress feedback Just press the ANTI FEEDBACK button and the goRack will do the rest AFS uses precision frequency detection and state of the art processing to determine the exact range of feedback frequencies to remove instead of indiscriminately removing large sections of audio In the past graphic equalizers were used to eliminate feedback from a system This was an acceptable method for eliminating feedback but when this method is put up against precision notch filters such as those found in AFS it becomes very evident that using graphic equalizers for this task severely affects the tone of the system With AFS the precision filters remove only a fraction of the frequency spectrum eliminating the feedback with far less audible artifacts The below diagram shows a comparison of filter widths between the AFS filters and conventional 1 3 octave graphic EQ filters Filter Precision Comparison Chart as E EE LEE T LEE E LEE EFL T LEE EE LT TET 1 LLLLLLLLE 60 700 800 9 1 1k 1 2k 1 3k 1 4k Hz TIP AFS works best when the signal entering the goRack s inputs is sufficient If the signal level is too low AFS may be slow to respond to feedback See Setting Initial System Levels on page 8 for further information on setting the goRack s in
29. ts reserved goRack Owner s Manual 5064543 A by HARMAN
30. y time you use your system the power amps should be the last components turned on and the first components turned off Configuring The goRack s Routing The goRack offers 3 routing options to select from The following table provides a description of each of these routing options Option Type _ Routing Options Description This is the default setting from the factory This option mono sums all input signals and feeds them to both outputs This option is ideal for the solo artist or duo For example one input could be used for connecting a microphone and the other for an instrument such as an acoustic guitar with a built in pickup This option is also well suited for speech presentation applications This option maintains stereo imaging through the goRack Select this option when connecting the goRack between the mixer and powered speakers or amplifier in a conventional stereo PA system This option mono sums the MIC LINE inputs just like option 1 but maintains stereo imaging in the AUX INPUT It also moves the Subharmonic Synthesis processing and adds EQ processing to the AUX INPUT Use this option when you don t want signals connected to the MIC LINE inputs to be processed with Subharmonic Synthesis and want to add equalization to the AUX INPUT signal Routing Diagram MIC LINE INPUTS MIC LINE INPUTS MIC LINE INPUTS LEGEND AF Anti Feedback COMP Compressor SUB
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