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KRK ERGO USER MANUAL REV 2.01

1. F Balanced 1 4 TRS Analog Line Inputs These connections are used either as inputs from your existing audio interface or as recording inputs from a mixer or rack channel G Calibrate Button This requires switching manually during the calibration process you will be told when to engage and disengage it H Balanced 4 TRS Analog Line Outputs These connections are used to connect to your monitoring system Dual monitor systems can be connected to A B or 2 1 systems with subwoofers can be connected to A B I Headphones Output Headphones can be connected here to monitor the signal being sent to your monitors or as an individual Solo Cue feed J Kensington Security Lock Used to secure the unit via a Kensington Security Device purchased separately if required Speakers B Sub L e Power Firewire Cal Mic Calibrate e LIC O Xe Ne SPDIF Page 9 RI enhanced room geometry optimization 8 Front Panel Features A A This button will select the A monitoring system if using in dual monitor mode this button will enable disable the main monitors if used in a 2 1 audio system B B SUB This button will select the B monitoring system if using in dual monitor mode this button will enable disable the subwoofer if used in a 2 1 audio system C Focus Global Bypass This button switches between three modes FOCUS Illuminated GLOBAL off and BYPASS Flashing Note
2. Next to continue gla KRK ERGO Software Setup me RE Welcome to the KRK ERGO Installation Wizard This wizard will guide you through the installation of KRK ERGO software It is recommended that you close all other applications before starting Setup This will allow necessary system files to update without having to reboot your computer Click Next to continue Next gt Cancel 8 You will see the following screen Again ensure ERGO is not connected to your system yet then press Next to begin installing the driver KRK ERGO Software Setu KRK ERGO Installation Wizard Please ensure that ERGO is NOT currently connected to your computer The wizard will now install the driver files For your device If a message pops up asking to confirm installation click Install to proceed Click Next to continue lt Back IL Next gt Cancel Page 24 10 11 12 13 14 a enhanced room geometry optimization On the lower part of your screen you will see the progress bar in the installer window and file information as the necessary files are installed Setup is installing the driver please wait Confirm driver installation if asked to During this stage the drivers are installed and Windows may also ask about Windows Logo Testing please confirm by pressing Continue Anyway The installer will place a folder called ERGO within your Pr
3. Page 28 a enhanced room geometry optimization 24 ERGO Calibration Before you start calibrating ERGO s room correction consists of two stages a Measurement and Analysis this technique aka Shooting the room is the procedure we will follow the procedure to gain what is known as Room Knowledge and is the information required to perform correction b Calculating Applying and Storing this is where the correction required is first calculated based on the Room Knowledge then applies to the selected monitors and stored within ERGO ERGO relies on a new way of measuring the room Using traditional test signals such as pink noise normally means a trade off between signal to noise ratio SNR and frequency resolution Long analysis windows lead to high frequency resolution but poor SNR due to the low number of averages But using multiple pure tones means long analysis windows 5 5 seconds for low frequency test signal leading to both high frequency resolution 0 2 Hz AND an excellent SNR due to very narrow analysis bandwidth in the frequency domain something which is almost insensitive to normal broadband background noise ERGO generates energy at the very same frequencies where the analysis takes place that is energy and processing is not wasted by measuring the spaces in between the analysis frequencies Because traditional 1 3 octave measurement and correction three frequencies for each doubling of frequency is not suff
4. you will see the screen below If there was a problem with the measurement such as a transient was detected please follow the instructions to repeat the measurement Until you see this screen then STOP and read the next section before moving on Place microphone in room position 1 Press ENTER to continue Next ERGO Cal will measure the other positions in the room The number of room positions needed depends on the value of Room Knowledge If it is below 90 after the third measurement ERGO Cal automatically includes extra room measurements until a Room Knowledge of 90 or better has been achieved The remaining measurements should be taken from random positions in the room with random orientations of the microphone Choosing these positions possibly other listening seats or a couch in the control room or places many people would stand if they are in the room you can even try finding problem spots in the room and taking an additional measurement there All you have to do is place the microphone at different positions in the room and in different orientations It is important to perform well spaced measurements to get a covering image of the acoustical properties in the room that is varying positions heights and orientations of the microphone For optimal room correction make sure that the measurements are 1 Performed more than 1 m 3 ft away from the loudspeakers 2 Not performed behind the loudspeaker 3 Taken at a minimum of 50 c
5. Mac OSX 10 5 x Leopard 32 bit Apple Mac 10 4 x is not supported but can be utilized by using Apple FireWire driver 2 2 0 1GB RAM 10 MB hard disk space 800 x 600 monitor resolution or higher 4 or 6 pin FireWire port 6 pin port required to FireWire to supply power to ERGO AC outlet for ERGO power supply if power is not supplied via FireWire c Power considerations ERGO can be powered in two ways External Power Supply This requires use of the supplied 12VDC 1A supply which is included Firewire Bus Power Using the power provided by the Firewire port if available please see more information on Firewire bus power in the next section Page 20 a enhanced room geometry optimization 20 1394 Firewire considerations a The Firewire Bus Most computers will generally be equipped with a single Firewire bus connection You may have multiple Firewire ports connectors on your computer but these are all normally connected to one physical chip which controls the bus The Firewire bus is limited in the amount of data bandwidth it can handle Each additional Firewire device connected to the Firewire bus demands additional bandwidth resources thus increasing the chances of exceeded the total available bandwidth Consequently it is recommended that ERGO be the only device connected to the Firewire bus for best possible performance ERGO and other devices connected to the same Firewire bus should work but of course
6. ROOMP Ee siansa sE AES A STEER 6 w FEU mecrree renee errr rere reemrre nti ieee eter E 7 S HOW ERGO WOKS anirien i EN O E Ta 8 Oy meod Diasa E E OE 8 le Badk Panel CONME ONS piisaa i aiii 9 s Font Panel Peano ananin A E E vie creesaresvneeoanst eatecees 10 Ge Pladng your Monitoring Systeliasssnereenn nnan AA 11 10 sereo Monitor PlacomeT asinsi REE 12 11 Subwoofer Placement asooisensinnaiann aai eiai aaia 13 12 Setting Monitor and Subwoofer Levels c ssscscsssescssseccsssssccssssscssseccsssecssssecsssseccssssccssssccssssccssssecssseecssaseesssees 14 13 Connecting ERGO to your monitoring system seesssecsssesssecsseccsseccssccssccsseccssccssccssecssuecssecsssccsuecsssecssecsseessees 15 19 Connecting ERGO to your COMPUTED ssuiscsiencssccisisscasstnecenavensvsssnssenstsaosscticionscenesensbsessivtasisuedsdessiucsteccsbesveticvbagienes 20 20 1394 Firewire considerations sssssssssssseeesossssssseesossssssnnssserosssssnnnesoosesssnnnseteeessssssssosseeerosssnnereerosssssssnrreeres 21 21 Preparing for Software Driver Installation ccssscscssseccssssccssssccssssccssseccsssecssssccsssssccssssecssssecssusecssneecssneeees 22 22 Installation for Microsoft Windows SySteMS scssscsssessssecssssecsseecsssecsssecsssecsssccsssccesssecsssccsssccsseccssecseseesssses 23 23 Installation for Apple Mac OSX SysteMs ccsssesssescsesssesssseccsccssesssscesscssscssnecsseccssecessccssesesscsssscasecesecessecasecess 26 24 ERGO
7. correction for the selected monitors is engaged Can ERGO work in a 2 1 system Yes ERGO will work with and correct 2 1 systems It will treat the subwoofer as part of the monolithic speaker system Can ERGO work in a 5 1 system Can I use 2 or more ERGOs for this No ERGO is designed for Stereo or 2 1 Stereo augmented by subwoofer only Is there a way to bypass the Digital to Analog converters on ERGO so can use another D A converter No ERGO uses phase accurate FIR filters in both the correction algorithm and the D A converters FIR filters unlike IIR filters found in some D A converters do not exhibit frequency dependent phase shifts Since ERGO corrects in both time phase and frequency domains it is imperative that we know the characteristics of the D A converter and do not induce unwanted or variable phase distortions Hence the reason behind ERGO s architecture Does ERGO color change the character of my monitors No ERGO only corrects it for presentation in your listening space just as the character of your mix would change if your environment was acoustically treated ERGO performs a similar job but in the digital domain What do the different LEDs on the Focus Global button indicate When the button is illuminated ERGO is in Focus mode When the button is not illuminated ERGO is in Global mode When you hold the button down for 1 sec ERGO is bypassed and the LED will flash indicating correction is not used Does ERGO
8. there are limitations which are dependent on their use Problems may arise depending on which Firewire devices are connected For example a Firewire disk used for back up or a digital camera should not cause any problems but when streaming audio from a Firewire hard disk or a Firewire DSP Unit the total Firewire bandwidth may be reached This will result in audio dropouts or reduced performance on either ERGO or the other connected Firewire device For this reason we would recommend that you use a separate Firewire bus for each Firewire device This may be a PCI PCle card in your desktop or a PCMCIA or Express card in your Laptop ERGO has been tested successfully with many other devices but cannot guarantee audio streaming as this is dependent on usage FireWire Chipsets High definition audio flowing over FireWire requires a consistent stream between the chipset in the host computer and the chipset in ERGO Unfortunately some FireWire chipsets have known issues when it comes to the reliability and synchronization required for streaming audio It is suggested to only use the best quality branded PCI and PCMCIA cards from professional manufacturers FireWire Cables Another issue that can degrade Firewire performance is cable quality Many cables even ones that feel like quality cables do not adhere to the IEEE 1394 specification Improper shielding and or grounding are common causes of cable issues always ensure you use the cable supplied
9. to put ERGO into bypass mode you must press and hold this button D Clip Indicator This will illuminate red when audio is 3dB below full scale indicating a likely clip condition E Power Firewire Indicator This will illuminate GREEN to show power is ON and the Firewire connection is operational This will illuminate RED to show power is ON and the unit is in Stand Alone mode F Calibration Indicator This will illuminate when the calibrate button is ON G Volume Level Control This large high resolution control adjusts the output level sent to your selected monitoring system H Headphones Level Control Located on Side Panel The headphones output level control is an illuminated dial on the left hand side of the unit NOTE The high quality headphone amp in ERGO is capable of providing a high output level to certain headphones please start with a low level and rise slowly to maintain comfortable and non damaging levels Your ears are the most important tools of your trade RoonPerfect Page 10 a enhanced room geometry optimization 9 Placing your Monitoring System Your monitors may already be positioned exactly where you need them for many other reasons if this is the case you can move to the next section and start connecting ERGO If you are positioning your monitors for the first time or have an opportunity to re position your monitors we strongly advise reading this section One of the great ad
10. took ERGO Version This is ERGO s firmware version currently 1 23 check www krksys com for the latest firmware for your unit RoomPerfect Version This is the version of the RoomPerfect algorithm in use the latest is 2008 Bootloader This is the bootloader number and should be 1 Application Version This is the version of the ERGO Cal application currently 1 20 check www krksys com for the latest software for your unit Note if you have a new ERGO which has not been calibrated there is no information in the first three fields You can now close this window and return to ERGO Cal s main window by pressing Close Page 31 x enhanced room geometry optimization 5 ERGO Cal will now search for ERGO and begin communicating once complete you will see the message below please press ENTER to being the process Note You can cancel the calibration process at any time if you are interrupted or want to start again simply press cancel and return to the start of the procedure Press ENTER to begin 6 The next step will remind you to check connections at this point you monitoring system should be on and the volume should have been set to your normal monitoring level or by following the chapter called Setting Monitor and Subwoofer Levels Wala entre Ob microphone are Press ENTER to continue 7 You will then be asked if you are using ERGO in subwoofer 2 1 mode your answer will determine how E
11. until you reach a comfortable monitoring level Typically 85 decibels SPL using the C response curve on the SPL meter Next route 1 octave band passed bass pink noise to the subwoofer to the monitor system A good noise choice is 35 to 70 Hz which is below the 80 Hz frequency of the subwoofer high pass filter but sufficiently high enough that most subwoofers will have adequate response in that band Set the gain of the subwoofer level control until it matches the same 85 decibel SPL level Then turn up the low pass filter control on the subwoofer to 130 Hz This allows the bass energy between the near field speakers and subwoofer to overlap Listen from the mix position and route pink noise with a band pass of 80 Hz to 130 Hz to your monitoring system Have someone adjust the phase on the subwoofer ideally a full 360 degrees and then back and note the position which sounds loudest The loudest position is correct and in phase Now return the low pass filter to the 80 Hz position or another frequency if you are using external high pass filters for the near field speakers Your system should now be properly aligned for phase level and spectral response Page 14 a I enhanced room geometry optimization 13 Connecting ERGO to your monitoring system ERGO is very flexible it has connections which allow it to be integrated into several different configurations The following pages cover some of the more common examples Note A
12. 4 1 kHz also referred to as Sample Rate THD Total Harmonic Distortion is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency Windows Driver Model A driver model based on the Windows NT driver model that is designed to provide a common architecture of 1 0 services for Windows operating systems for specific classes of drivers This driver model is currently supported under Windows 98 Second Edition Windows Millennium Edition Windows 2000 and Windows XP WDM drivers provide multichannel 1 0 Page 50 a enhanced room geometry optimization 31 Further Assistance We hope that this help document gives you all the information you need to get up and running If you have any additional questions please feel free contact our Customer Support Monday through Friday at 1 954 9499600 from 9AM to 6PM EST Please have the serial number for your unit ready located on the base of the unit 32 LEGAL Specifications subject to change for improvement purposes without notice or obligation Apple OSX Snow Leopard and Mac 0S are trademarks of Apple Inc registered in the United States and other countries Microsoft Windows 7 and Windows Vista are registered trademarks of Microsoft Corporation in the United States and other countries FireWire and the FireWire symbol are trademarks of Apple Computer Inc registered in the U S and other countries The FireWire logo i
13. CaliBFAblOl sssissvessaressssescesssavaseatavassnnspsvipunntastnniaayis doveneaisecnen nist snanaaieitenaemunsnenaasnennniete 29 25 Using ERGO Calibration Software ERGO Cal cssssesssscssssecssscccsssccsssccsssccssccsssccsseccsssecssscessscssssecssscseseessses 30 26 ERGO Control Panel Windows Mac OSX sssssescsssecsssecsssecssssecsssessssecsssecsssccsssecssnscssssccssscssssccsssccassccsseecssass 40 DT gt CUM A WOON cc oes doascaciacec arcane E psa vos ev shasta ne nore S 44 28 Frequently Asked Questions FAQS scsssssscsssssccsssscssssssecssssscssusesssssccssssesssusccesusccssusccesusccesssecssnsecessusesesnseen 45 29 TOURS NO minerar E crcessee ns agenesis eer ee teeesetearseoce 47 Bie OS ioaea a ein Mate AEA 49 3i Further AS aN iCe ansensni a O 51 Ie ME A aia E E E 51 Page 4 a enhanced room geometry optimization Introduction Thank you for purchasing your ERGO Room Correction and Audio Interface system Ifyou are already a KRK thanks for your continued use and support of our products If you are new to KRK we are pleased that you chose ERGO as your room correction we welcome you to our continually growing number of users At KRK we strive to achieve the most honest natural reproduction of your hard work We encourage you to visit our website to see our industry standard Rokit monitors class leading VXT monitors Subwoofer solutions and the latest addition to the KRK portfolio the KNS series headphones
14. Drivers selection etc Further Use Please refer to the audio guides for your Windows or Mac OSX operating system or audio application in order to get the best out of your ERGO system Windows users will see the supported driver categories such as Direct X Wave and ASIO in the audio application and can control Windows use of ERGO in the Sounds and Audio Devices page of the Windows control panel Mac OSX user will see the CoreAudio device in the Audio MIDI Settings panel and in the Sound section of your System Preferences For specific set up guides for your Digital Audio Workstation please go to www krksys com Page 43 KRKI 27 Specifications Processing RoomPerfect Algorithm Sample Rate Room Correction Frequencies Room correction Filter S PDIF Input Operating Range S PDIF conformity Dynamic Range System THD N Internal Sample Rates Maximum Microphone Input Level Maximum Line input Level Maximum Line Output Level Firewire Implementation Dimensions Microphone Length Weight Power Operating Temperature Range Page 44 a Min _ enhanced room geometry optimization 400MHz Analog Devices Blackfin DSP 96KHz 20 500Hz 1024 tap Finite Impulse Response 44 1 kHz to 96 kHz 1EC60958 3 96 dB system component 118dB lt 0 025 using 0 dBFS input and 22 22kHz Band Pass Filter 44 1 kHz 48 kHz 88 2 kHz 96 kHz 32 dBu 19 dBu 19 dBu Dual 1394a Firewire400 por
15. ERGO Enhanced Room Geometry Optimization is an exciting product that enhances the performance of any loudspeaker monitoring system by digitally correcting both common and complex acoustic problems in the room 1 Method of Use ERGO can be used in two main ways a Asan audio interface with room correction to hardware running Apple Mac OSX Core Audio or Microsoft Windows DirectX WDM ASIO operating systems allowing full access to audio input and outputs for recording and monitoring and room correction b As a stand alone room correction device which sits in line with your monitoring signal path This requires connection to your Apple Mac OSX or Microsoft Windows hardware for the room calibration process only once complete ERGO can be disconnected to use in stand alone mode providing room correction to the line input signal and supplying the corrected signal to your monitoring system Both methods allow the following room correction options a Dual Monitoring System Two sets of stereo monitors which can be A B switched from ERGO s front panel b 2 1 Monitoring System A single set of stereo monitors and a dedicated subwoofer in this mode the main monitors and the subwoofer can be individually muted when required ERGO s functionality is consistent between modes and all operational aspects are identical For more on the functionality please see the section on connecting ERGO Page 5 RI enhanced room geometry opti
16. ERGO Microphone Calibrated measurement microphone used when calibrating the room only ERGO Microphone Adapter If your microphone cable has an XLR connection this cable allows it to be converted to a 14 TRS connection for use with ERGO ERGO Installation Disc This contains the relevant installer for your system and an electronic copy of this user guide 6 pin to 6 pin 1394a Firewire 400 cable for connecting ERGO to your OSX or Windows hardware Page 7 enhanced room geometry optimization 5 How ERGO works ERGO takes a stereo audio stream from the analog or digital S PDIF or FireWire input domain and processes it though a 96 kHz room correction algorithm All incoming analog audio is sampled at 96 kHz while incoming digital audio is sample rate converted up to 96 kHz for processing If incoming audio comes in over FireWire the processed audio is converted to reflect the output frequency of the ASIO driver up to 96 kHz In Digital Input mode the output frequency and the audio going to your monitors is going through digital to analog converters fixed at 96 kHz sample rates ERGO s architecture provides the best audio quality while maintaining compatibility with existing systems In fact the audio converters used in ERGO are the same as those found in multi thousand dollar audio workstation hardware 6 System Block Diagram Below is shown the internal architecture and signal path SURFACE SWITCHES
17. FIREWIRE 1394 PORT A AND INDICATION INTERFACE 1394 PORT B ANALOG POTENTIOMETER Hota Aouteur err CALIBRATION MIC INPUT A D CONVERTOR CALIBRATION SWITCH ne gt Aourpur Riann LINE INPUT LEFT LEFT g gt P PEEN eee E D Bourpuraern LINE INPUT RIGHT FIREWIRE CONTROLLER EJ gt Bourpur rien SAMPLE RATE S PDIF DIGITAL INPUT fni z CONVERTOR A D CONVERTOR HEADPHONES LEVEL SAMPLE RATE CONVERTOR ANALOG AUDIO SIGNALS DIGITAL AUDIO DIGITAL COMMUNICATIONS CONTROL AND INDICATION DATA 1394 AUDIO COMMUNICATION ROOMPERFECT DSP 96 kHz Page 8 I enhanced room geometry optimization 7 Back Panel Connections A Power On Switch This turns the unit on off B Power Input Socket This accepts a 12V 1A input from the power supply included with ERGO C Firewire Ports These 2 ports allow connection and daisy chaining of FireWire devices D S PDIF Digital Input This allows connection of a digital input source from a playback device or another audio interface E Calibration Microphone Input This jack is used to connect the ERGO measurement microphone It is only used during the calibration process It is recommended that you only use the microphone supplied with ERGO for room calibration ERGO supplies a 15V phantom power source to its microphone and using other microphones for calibration may result in poor room analysis and improper correction filters
18. FireWire connection to a computer in order to run the analysis portion of the room correction process Once the analysis is complete ERGO no longer needs to be connected to the computer you can simply connect your digital or analog input and your monitors If any large structures in the room change we always advice spending 15 20 minutes re calibrating using ERGOCal What is the difference between ERGO and room correction software built into operating systems like Microsoft Windows 7 or Apple Mac OSX Snow Leopard First and foremost are the DSP requirements to perform accurate room correction while simple filters can be created and inverted to compensate for single bands of error RoomPerfect offers much higher analysis and correction than a built in system such as these Room correction relies heavily upon the accuracy of the measurement and the analysis of this data to create an acceptable correction that does not distort or color the sound To do this variables in measurement analysis and correction need to be reduced or eliminated Because ERGO is a complete system with matched equipment and measurement techniques this removes a lot of variability and the result is improved correction Operating system based correction introduces a number of variables that result in inaccurate measurement Also operating system based correction can take an alarming of your system resources This means fewer plugins increased latency and overall poorer
19. NING This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm CAUTION To reduce the risks of fire or electric shock do not expose this product to rain or moisture Do not use this product near water for example near a bath tub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool Unplug the unit from the wall outlet before cleaning Never use thinner cleaning fluids solvents or chemically impregnated cloths For cleaning always use a soft dry cloth Unplug this product during lightning storms or when unused for long periods of time CAUTION The unit should be installed so that its location or position does not interfere with its proper ventilation For example it should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through its ventilation openings The unit should be situated from heat sources such as radiators heat registers stoves or other devices including amplifiers that produce heat No naked flame sources such as lighted candles should be placed on or near the unit WARNING Do not place this unit on an unstable surface cart stand or tripod bracket or table The unit may fall causing serious injury to a child or adult and serious damage to the unit Use only with a cart stand tripod
20. Panel is illuminated Use only the KRK measurement microphone Don t plug in any other microphone in for calibration If you lose your KRK measurement microphone you can buy a new one from KRK customer support at 954 949 9600 You cannot differentiate between ERGO in bypass and processing modes Your room may already be very good so ERGO is only optimizing smaller nodes and room problems This is very unlikely however ERGO s effects can range from subtle to extreme so there should be a difference In particular listen for the following e Improved imaging e Tighter bass e More definition among instruments RoomKnowledge will not reach 100 The complexities of any room and the way room knowledge is calculated means that 100 can rarely be reached After 9 measurements the system will have reached the maximum knowledge ERGO can achive Page 48 a enhanced room geometry optimization 30 Glossary A D Convertor The conversion of analog data or information into digital or binary form See binary ASIO Audio Stream Input Output ASIO developed by Steinberg is a cross platform multi channel audio transfer protocol It allows software to have access to the multi channel capabilities of a wide range of powerful sound cards Binary A digital numbering system based on two where data is expressed as combinations of 0 s and 1 s Bit A single unit of digital information expressed as a 0 or 1 CoreAudio This is an ultra l
21. RGO s A and B switches operate If you select No the A B switches will alternate between the A and B monitors If you select Yes Switch A will control you main monitors and switch B will control the subwoofer 8 The next window may inform you of which if any buttons are selected on ERGO A B Sub both or neither and will instruct you to select the appropriate button Note Ensure you have selected the monitor path for the monitors you wish to calibrate You will receive confirmation as shown below differing messages for each choice Measurement A shown Press ENTER to continue Press ENTER to continue Page 32 10 11 12 K C14 enhanced room geometry optimization If you chose to use ERGO in Subwoofer mode the next window may tell you to press any of ERGO s required buttons please follow the guidance When given the prompt below confirming both buttons are on press ENTER to continue Press ENTER to continue In order to create new calibration data ERGO must first overwrite the existing measurement The screen will look as shown below differing messages for each choice Measurement A shown Press ENTER to continue Press ENTER to continue Press CANCEL to go back After a few seconds you will see the following message please wait while the measurement memory is cleared Please wait The step will check the position of the calibration button as this routes the signa
22. Save in jE Computer Hard Disk Drives 2 Recent Places panied a ee 34 6 GB free of 210 GB Audio E Desktop svd rrr SI Cl al Devices with Removable Storage 1 lu ay Libraries E DVD RW Drive D LY Network Location 2 Other 1 Computer a Network File name ERGOdata bin Save as type Binary bin 0 To restore a previous room calibration simply start ERGOCal and press RESTORE then select the bin file you previously saved NOTE ROOM CALIBRATION SAVE AND RESTORE IS A COMPLEX PROCESS AND TAKES AROUND 10MINS TO COMPLETE Page 39 enhanced room geometry optimization 26 ERGO Control Panel Windows Mac OSX Once ERGO is installed and calibrated it will be ready for use with any audio application or operating system which is currently supported The control panel to access specific settings can be found in you Programs folder and the icon looks like this ERGO Control Panel To start the control panel double click the icon with your left mouse button M The control panel will start and you will see this window this chapter will take you through the elements of the control panel before you begin using ERGO with your DAW Note for Apple Mac OSX users You will not see a buffer settings size this is all handled by the integrated CoreAudio driver for Leopard and Snow Leopard SYSTEM FIRMWARE DSP FIRMWARE FIREWIRE ID A B SUB CROSSOVER FREQUENC
23. T 6 Shown siasa D MOON ea KRK VXT 4 Shown Subwoofer Subwoofer connected to B outputs connected to A outputs Power Supply required if not bus powered Headphones Stereo Mono Line Input KRK KNS 8400 shown Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface ERGO Cal Microphone Only required for calibration O n Digital Input S PDIF Coaxial Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface External Firewire Drive External Firewire DSP Unit q Must support 1394a or 1394b Focusrite Liquid Mix shown Apple OSX System Microsoft Windows System Note Connecting additional firewire devices reduces bandwidth where possible use 1394b Firewire800 connections Page 17 x enhanced room geometry optimization 17 Connecting ERGO as a stand alone device Below is the standard configuration when using ERGO as stand alone device Here ERGO simply sits in the path of your existing monitor feed In this mode ERGO will perform correction on the signal appearing at either the digital or analog inputs Note The digital inputs are treated as a priority so if an S PDIF source is connected it will be used instead of the analog input If you wish to use the analog inputs please ensure a digital source is not connected In this mode the controls all operate according to the mode calibrations were performed with or without Subwoofer Below a 2 1 system is shown y
24. Y SAMPLE RATE UNLOCKED ms LOCK PRO CONSUMER L cr MAIN OUTPUT 1 2 OUTPUT 3 4 SAMPLE RATE BUFFER SIZE A ERGO Info This is a read only display that indicates the current System Firmware revision DSP firmware revision and the FireWire ID SYSTEM FIRMWARE 1 24 DSP FIRMWARE 0 0 FIREWIRE ID 00454653 _ 3 Page 40 a enhanced room geometry optimization B Speaker Mode Allows you to select to use dual STEREO A B or 2 1 A B SUB id using a system augmented with a subwoofer Note If in STEREO A B mode no crossover fader or value will be shown STEREO A B SUB CROSSOVER FREQUENCY If selecting 2 1 Mode as shown below a fader will appear along with a value for the crossover frequency Use the fader to adjust your crossover settings please see the section on setting levels or your systems guidance for subwoofer crossover frequencies Remember that in a speaker crossover network the crossover frequency is the frequency point that represents the upper or lower range limits of a given speaker driver In a two way speaker system the crossover frequency would be the point where the low frequency driver begins to roll off and the high frequency driver starts to cut in STEREO A B SUB CROSSOVER FREQUENCY C Headphone Source The headphone output can be selected from two options 1 The headphones follow the main output 1 2 normal mix
25. ance for more information see the specific guides found on the CD or available from www krksys com Page 47 enhanced room geometry optimization Using ERGO in WDM modem you cannot set a buffer size value in the Control Panel This is normal operation to manually select buffer size you must use ASIO drivers The Calibration Microphone cannot detect a loud enough level Turn up the level on your monitoring system it needs to excite your room in order for ERGO to measure it accurately This should not happen on Macs since the Mac OS can aggregate or combine multiple devices into a single interface Windows users have a couple of options Windows systems can only have a single ASIO device Use your main ASIO device when tracking and switch to ERGO ASIO when mixing down Take a SPDIF or analog out from your existing FireWire interface and plug it into ERGO In this mode you can unplug ERGO from its FireWire port and power up using the external power adapter ERGO s S PDIF Inputs and converters are of the highest quality so there will be no degradation when using this approach In fact if your DAW is already optimized we suggest that you use this approach An elderly computer does not detect ERGO ERGO needs Leopard 10 5 x or Snow Leopard 10 6 6 The Calibration Microphone appears not to be working You need to have the Calibrate switch on the back of ERGO pushed in order for the microphone to work Make sure the Calibrate LED on the Front
26. ble Male XR to Female XLR If this is a new install and ERGO Cal has already been auto started please move to step B 1 Double click the left button of your mouse m on the ERGO Cal icon For Windows this will be a shortcut on the desktop or in a folder called KRK ERGO within your Programs folder For Mac OSX this will be a folder called ERGO within you Applications ERGO Cal 2 Once you initialize ERGO Cal the following screen appears a gt enhanced room geometry optimization Page 30 a enhanced room geometry optimization 3 _ ERGO Cal will now search for ERGO and begin communicating once complete you will see this message 4 Now ERGO Cal has detected you ERGO unit please press the info button on the right hand of the current window This will open ERGO Cal s info window which gives you information regarding your calibration Note If you move your unit to another system the calibration and correction will function as it did for your last calibration but the info pane will show no data as the system data is stored on the host computer 4 24 4 Jun 92008 0x60000000 4 1 51 Thursday February 09 2012 In the window you will see the following Room Knowledge This is a value based on how much ERGO learned about you room Room Correction Index This is a score up to 30 which indicates how complex the correction was Number of Measurements This is the number of calibration measurements you
27. bracket or table recommended by the manufacturer or sold with the unit Any mounting of the device on a wall or ceiling should follow the manufacturer s instructions and should use a mounting accessory recommended by the manufacturer An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combination to overturn Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over NOTE Should the unit become damaged beyond repair or reaches the end of its life please consult the regulations regarding disposal of electronic products in your region NOTE KRK Systems LLC cannot be held responsible for damage and or including data loss caused by improper use of the unit and or the applications provided for use with the unit i enhanced room geometry optimization IMPORTANT SAFETY INSTRUCTIONS A CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT ENGLISH The apparatus shall be connected to a Mains socket outlet with a protective earthing connection GERMAN Das Ger t ist eine Wandsteckdose mit einem Erdungsleiter angeschlossen werden FRENCH L appareil doit tre connect une prise secteur avec connexion la terre SPANISH EI aparato estar conectado a una toma
28. c e L 1L_ enhanced room geometry optimization USER MANUAL KRK gt gt gt gt gt e PP PPE gt b Page 2 enhanced room geometry optimization IMPORTANT SAFETY INSTRUCTIONS CAUTION THE LIGHTNING FLASH WITH AN ARROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UN INSULATED DANGEROUS VOLTAGE WITHIN THE UNITS ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS WARNING THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE SERVICING INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE PRODUCT NOTE THE HAND WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO SPECIFIC GUIDANCE AND INFORMATION REGARDING THE OPERATION OF THE UNIT AND SHOULD BE READ FULLY BEFORE USING THE UNIT FOR THE FIRST TIME CAUTION ATTENTION RISK OF ELECTRIC SHOCK RISQUE DE CHOC ELECTRIQUE DO NOT OPEN NE PAS OUVRIR CAUTION TO REDUCE THE RISKS OF FIRE OR ELECTRIC SHOCK DO NOT REMOVE ANY COVERS OR OPEN THE UNIT THERE ARE NO USER SERVICABLE PARTS INSIDE ALL SERVICING SHOULD BE REFERRED TO QUALIFIED SERVICE ENGINEERS WARNING READ AND FOLLOW ALL THE SAFETY AND OPERATING INSTRUCTIONS BEFORE CONNECTING OR USING THIS UNIT RETAIN THIS USER MANUAL FOR FUTURE REFERENCE ALL WARNINGS ON THE UNIT AND ITS PACKAGING SHOULD BE READ AND FOLLOWED WAR
29. de red el ctrica con una conexi n a tierra ITALIAN L apparecchio deve essere collegato a una presa di rete con una connessione a terra protettiva gt 1 The unit and power supply should only be connected to a power supply outlet only of the voltage and frequency marked on its casing 2 Protect the power cable from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 3 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The A wide blade or the third prong is provided for your safety If the provided plug does not fit into your outlet consult a qualified electrician for replacement of the obsolete outlet 4 Ifthe mains plug supplying this product incorporates a fuse then it should only be replaced with a fuse of identical or lower rupture value 5 Never use a damaged or frayed power cable this can introduce serious risk of exposing lethal voltages 6 The power supply cable of the unit should be unplugged from the wall outlet when it is to be unused for a long period of time 7 Only use attachments accessories specified by the manufacturer A DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Upon completion of any servicing or repairs request the assurance that onl
30. e occurrence of harmonics within the output signal which are not present in the original input signal Hertz Hz KiloHertz kHz A unit of frequency measurement used to express the number of complete cycles occurring in a one second interval Impulse Response A lot of information about a device can be determined by how it reacts to a particular impulse Impulse response could be defined as a measure of the time domain response of a system input to output to a very brief transient signal at its input The Fourier transform of this time domain waveform is the frequency domain transfer function So frequency phase and transient responses are all related to this concept In fact the reverberation of a room can be thought of as its impulse response 1 0 Input Output A connection for channeling the flow of audio or signal data to and from a device Room Correction Score A measure of how much processing is being performed in the room correction filters The room correction score for a specific RoomPerfect filter can be viewed by pressing the Info button from the initial ERGO is ready to measure your room screen RoomKnowledge Indicates how much information has been gathered about the room See more details earlier in this manual Sampling Frequency The number of analog audio signal samples taken in one second to produce a digital interpretation of the original signal The industry standard sampling frequency for CD quality audio is 4
31. esults may be affected by the power output of your system Press ENTER to continue 19 ERGO will then commence measuring your system you will hear two measurement test signals being played through the left monitor then the right monitor While the room is being measured you will see this message Please wait Page 35 x enhanced room geometry optimization 20 Once the FOCUS position has been measured you will see the screen below Press ENTER to continue 21 Next the volume level calibration message will appear and you will hear a test tone Note You will only hear he test tone in the LEFT monitor as each side is measured independently Please wait 22 Ifthe volume needs adjusting ERGO Cal will ask you to adjust the level please follow the messages until you see the screen below and press ENTER to continue Note If you cannot get enough level from your monitors press No to accept you maximum level and ERGO will still be able to perform calibration although the results may be affected by the power output of your system Press ENTER to continue 23 ERGO will then commence measuring your system you will hear two measurement test signals being played through the left monitor then the right monitor While the room is being measured you will see this message Please wait Page 36 24 25 a enhanced room geometry optimization Once the FOCUS position has been measured
32. etects a SPDIF clock it automatically selects the SPDIF Input as its source If ERGO has detected a SPDIF clock but the SPDIF Input is not working then ERGO was started in Analog mode Use the ERGO Control Panel to select the SPDIF Input If the SPDIF Input is not working ERGO is probably not locking its clock to a SPDIF clock Check your cables and the audio output selection in your DAW application a enhanced room geometry optimization Audio Settings This display lights to indicate ERGO s sample rate Use the associated pull down boxes to select ERGO s sample rate and ASIO buffer size Reducing the buffer size can decrease the amount of latency while monitoring and recording audio Increasing the buffer size can reduce and or eliminate some audio artifacts such as pops and clicks while recording BUFFER SIZE Note for Apple Mac OSX users You will not see a buffer settings size this is all handled by the integrated CoreAudio driver for Leopard and Snow Leopard Use the associated pull down boxes to select ERGO s sample rate and buffer size Reducing the buffer size can decrease the amount of latency while monitoring and recording audio Increasing the buffer size can reduce and or eliminate some audio artifacts such as pops and clicks while recording To obtain more information about buffer size settings please refer to your DAW s User s Manual especially the chapters related to Hardware Software configuration Audio
33. f a monitor will change the way that you perceive your music So let s analyze a few examples Close Near Field In a control room the monitors are frequently placed on the meter bridge or in a close field listening position of a DAW workstation console Initial placement starts by measuring out a simple equilateral triangle all three sides equal in length with the apex at the center of the listening position as shown in Figure 1 as an overlay for the stereo installation In this configuration the Left and Right monitors are each placed at a 60 angle equidistant from the listening position Focus Listening Position Mid Field Rear Stands Positioning This configuration is similar to the close near field configuration It is normally used with larger monitors or when the monitors are too large or heavy for the meter bridge This set up has the potential for a larger sweet spot and better spatial imaging Make sure that the height of the woofer cone is above the height of the console to avoid reflections and comb filtering effects Focus Listening Position Page 12 O enhanced room geometry optimization 11 Subwoofer Placement Note A properly set up subwoofer system extends the bass response of the main stereo monitors down into the 30 Hz range but without exaggerating bass response in the room Improper setup may cause an exaggeration of bass response in the room which in turn may cause the engineer to
34. icient for room correction ERGO will perform improved and more accurate correction The measurement at the listening position holds information about the operators access to the sound field while the room positions hold information about the 3 dimensional sound field in the entire listening room This allows ERGO to apply the required correction for the operator in the sweet spot FOCUS MODE or for the entire room GLOBAL MODE In a new ERGO installation the software guides you through the set up sequence indicates when to move the microphone monitors the quality of the measurements and continues the process until the necessary information is retrieved and the filters for global and focused correction can be calculated Page 29 enhanced room geometry optimization 25 Using ERGO Calibration Software ERGO Cal Note Do not plug headphones in at this stage the tones played through ERGO during calibration should not be monitored Please now connect the measurement microphone provided with ERGO Note This microphone is specifically designed to be flat over the range of ERGO s measurements Please do not use any other type of condenser or dynamic microphone as the power supplied is 15v and may damage or not sufficiently power a condenser variant You will need a microphone cable which is long enough to reach all areas of your room Please use the cable adaptor supplied to adapt a traditional microphone ca
35. ing mode for engineer 2 The headphones become an independent output 3 4 allowing a dedicated monitoring feed for an artist MAIN OUTPUT 4 2 OUTPUT 3 4 Page 41 Page 42 enhanced room geometry optimization Input Select Note Input select requires revision 1 23 or higher firmware please ensure you have this firmware in your unit if not please go to www krksys com and download the firmware updater from the ERGO page Input select allows you to switch the input source for KRK ERGO Inputs which will be visable in your audio applications and operating system AUTO In this mode ERGO will route the analog signal to the inputs unless a digital signal is detected If a digital signal is detected it is automatically selected and will replace the analog input S PDIF In this mode the digital signal is will always be routed to the inputs ANALOG In this mode the analog signal is will always be routed to the inputs PDIF ANALOG Note In S PDIF mode you will see the incoming digital audio stream status in the window shown below SAMPLE RATE UNLOCKED LOCK PRO CONSUMER _ e_ nh Ee The simulated LED s will illuminate to show LOCK ERGO has detected and locked the signal at the S PDIF Input socket PRO Professional Mode S PDIF signal is present ANALOG Consumer Mode S PDIF signal is present Note If you are in Standalone mode no FireWire connected and ERGO d
36. ing this procedure NOTE Always check www krksys com for the latest ergo firmware drivers and software Running the latest installer will ensure that the correct drivers are used thus preventing any unexpected behavior 1 Ifyou have downloaded the dmg compressed file from the website please unzip the file by double clicking the icon with your left mouse button m Note If you are installing from CD please refer to the ReadMe rtf file on the CD and follow the additional instructions ERGO Software v1 07 dmg 2 This will open a folder showing the installer package ERGO Software v1 07 3 Start the installer by double clicking the icon with your left mouse button M 4 You will then see screen below please quit any running applications and press Continue to move on Install KRK ERGO Welcome to the KRK ERGO Installer Introduction Welcome to the KRK ERGO Software Installation Program You will be guided through the steps necessary to install this software Continue Page 26 I lt enhanced room geometry optimization You will see the following screen Again ensure ERGO is not connected to your system yet then press Install to continue AAR I Standard Install on Snow Leopard Introduction Destination Sel This will take 15 2 MB of space on your computer Installatio Click Install to perform a standard installation of installatian this
37. l from ERGO s measurement microphone into the hardware If the calibration button is OFF you will be asked to turn it on for the position please refer to the rear panel diagram at the front of this manual You will then see the following message press ENTER to continue Press ENTER to continue Page 33 enhanced room geometry optimization 13 You will then see the following message informing you to set the volume knob to the 12 o clock or North position This is a necessary step in order to set the position of the volume knob for the first calibration tones so that they are at a safe low level Position the volume knob and press ENTER to continue o clock position north so that the calibration tone level can be optimized Once the knob is in this position please press ENTER to continue 14 You will be asked to slowly adjust the knob until the volume is in the correct position please follow the instructions on screen until you receive the message below and then press ENTER to continue Press ENTER to continue 15 You will then be asked to place the measurement microphone in the FOCUS position This is the sweet spot of your monitoring system Make sure that the height and orientation of the microphone correspond to your typical listening height and direction as illustrated below Do not block the line of sight between the microphone and the loudspeakers Each measurement is comprised of a low and a high freque
38. lings walls and floors greatly affect the sound quality If you place the loudspeaker close to the back wall the bass reflections from the wall and the direct sound will arrive simultaneously at the listening position i e the impulse response in the bass region can be improved considerably and ERGO can easily compensate for the uneven frequency response as a consequence of the placement So with ERGO it can actually be an advantage to choose what s normally regarded as a less ideal close wall loudspeaker placement as this will not only improve the impulse response Also when compensating for the increased efficiency the load on both amplifier and loudspeaker is decreased resulting in less distortion and better headroom is achieved And taking energy out of the system also has another advantage because delivering less energy into the room means that room modes are less excited From this a much more even power response across the room is achieved i e the differences between peaks and dips in the response are reduced dramatically The result you see after calibration is that the Room Correction Index will also be quite high since correction in the bass region is needed However the index number is not high because you have a poor system it s high just because you have chosen a loudspeaker position that improves the impulse response but then requires compensation for the increased efficiency in the bass region Try it o
39. m 1 5 ft between each measurement The following illustration shows the steps listed above Do NOT take measurements from behind your monitors Take measurements gt 1m 3feet from the monitors Page 37 enhanced room geometry optimization 26 Place the microphone in your first position and press ENTER to continue ERGO will then analyze that position and then ask you to re position the microphone to the next position Follow the process until you have at least 90 room knowledge The room correction score is a measure of how much processing is being performed in the room correction filters To some extent this reflects how audible the correction is However the same amount of processing can sound very different due to placement in frequency of the processing For low values below 10 of the room correction score only subtle correction is needed to the original sound in the room With high room correction scores more extensive processing is employed The room correction score for a specific RoomPerfect filter can be viewed by pressing the Info button from the initial ERGO is ready to measure your room screen As ERGO begins taking measurements to acquire Room Knowledge you will be notified of the percentage of information gathered after each measurement and instructed to continue on to the next Room position measurement If you choose to continue with more measurements select YES and follow ERGO s prompts until
40. mix in less bass energy than desired We recommend paying close attention when configuring your subwoofer Bass frequencies are largely non directional however that does not mean that you should ignore the subwoofer s placement in the room If fact a sub s physical position in the room in relation to the floor walls and other surfaces radically influences its bass response In a monitoring situation it is desirable to place the subwoofer so that it produces the smoothest frequency response at the listening position In addition since the subwoofer s output will interact with the other monitor speakers in the room it is important to consider the subwoofer and near field speakers as a total system If you have access to a Real Time Analyzer and a calibration microphone then setting up the room can be fairly painless There are good selections of iPhone Smartphone applications which will allow your device to measure SPL However it can also be done with a generic SPL meter or even your own ears once you know what to listen for What you are attempting to do is find a place in the room where the subwoofer interacts smoothly with the acoustics to even out the bass response at the listening position One way to do this is to reverse the normal position of the subwoofer and listening spot by temporarily moving the subwoofer to your seat position in front of the console Then play back pink noise in the 30 to 80 Hz range or music with robust bass informa
41. mization 2 ERGO and RoomPerfect As the room itself is one of the most important factors when considering the re production of audio signals it makes sense to take this issue seriously Room acoustics is without doubt a complex science and while we endorse and encourage physical room treatment we also understand that it can be fraught with difficulty and without proper expertise can often lead to undesirable results Using baffles can sometimes results in timing and precision errors in the low frequency response of the room Room issues such as resonance ringing absorption and reflections can be highly complex by nature and treatment can often have unwanted side effects In the age of the project professional studio quite often the room is a compromise which can t be easily negated Finally in a studio which is constantly evolving with new equipment and structure changes associated with them mean any previous physical correction results could be destroyed ERGO utilizes the RoomPerfect algorithm licensed from what we consider to be the authority on room correction Lyngdorf Audio This technology developed in Denmark uses highly complex test tones multiple measurements and over one thousand EQ points to control your audio environment The system can derive data on room modes power response directivity and LF roll off which inferior modes of correction do not account for The RoomPerfect technology is exclusively licensed for KRK ERGO O
42. ncy measuring signal first in the left and then in the right channel The length of each measurement depends on a combination of the measurement volume and the background noise in your local environment Typical measuring times for the low and high frequency measuring signals are 25 and 5 seconds respectively If an error message is displayed Make any required corrections to your set up and follow the prompt to retry the measurement Focus Position Measurements must be performed more than 1 m 3 ft away from the loudspeakers in an X Y orientation and must not performed behind the loudspeaker Also do not sit in the listening position while Focus measurements are being taken L 8 Ea 9 Page 34 16 17 18 a lt enhanced room geometry optimization Once you have the measurement microphone in the FOCUS position please press ENTER to continue as shown below Press ENTER to continue Next the volume level calibration message will appear and you will hear a test tone Note You will only hear he test tone in the LEFT monitor as each side is measured independently Please wait If the volume needs adjusting ERGO Cal will ask you to adjust the level please follow the messages until you see the screen below and press ENTER to continue Note If you cannot get enough level from your monitors press No to accept you maximum level and ERGO will still be able to perform calibration although the r
43. ne fantastic advantage of ERGO s implementation of RoomPerfect is the Focus and Global modes of operation In Focus mode the monitoring position sweet spot is corrected and is the setting which should be used during mixing In Global mode the signal processing power is applied in a different way to correct the whole room ideal for when artists producers A amp R people want to all be in the room and it still sound right An important thing to note regarding the RoomPerfect algorithm is that one of the main advantages when compared to other methods of room correction This ability to act as non destructive correction actually maintains the character of your monitoring system RoomPerfect does not try to remove the issues such as reflections and absorption as these are required to give us spatial positioning references it actually adapts to them in a corrective manner The RoomPerfect algorithm in ERGO works on frequencies up to 500Hz which equates to around 2ft this works well in the studio environment where the user is working in a near field mode and has a considerably smaller sweet spot than that of the home theatre Lyngdorf offer a high end full bandwidth solution for home theatre systems based on the same algorithms which is considered by many to be one of the industry leading solutions Once your room is calibrated and ERGO is applying the RoomPerfect correction you will notice the difference Over time you will be able to trust the so
44. nitors Seed Sanh sedis an babaedei ai toast tanta KRK VXT 6 Shown n BMonitors ASN Any brand o SSE Power Supply required if not bus powered Headphones KRK KNS 8400 shown Digital Input S PDIF Coaxial ERGO Cal Microphone io Only required for calibration M From any computer audio interface or rackmount 1 0 S AVID Apogee Focusrite RME Audio Lexicon etc External Firewire Drive External Firewire DSP Unit Must support 1394a or 1394b Focusrite Liquid Mix shown Apple OSX System Note Connecting additional firewire devices reduces bandwidth where possible use 1394b Firewire800 connections Page 19 enhanced room geometry optimization 19 Connecting ERGO to your computer A System Requirements Note If using in Stand Alone mode a connection to an Apple Mac OSX or Microsoft windows computer is only required for performing room measurement and analysis The Minimum required computer specifications for calibration or use as an audio interface with room correction are listed below Microsoft Windows 7 32 64 bit Microsoft Windows Vista 32 64 bit Microsoft Windows XP SP2 or later 32 bit 1GB RAM 10 MB hard disk space 800 x 600 monitor resolution or higher 4 or 6 pin FireWire port 6 pin port required to FireWire to supply power to ERGO AC outlet for ERGO power supply if power is not supplied via FireWire Apple Mac OSX 10 6 x Snow Leopard 64 bit Apple
45. ograms folder Within that folder you will find the ERGO Control Panel and ERGO Cal application as shown below You can create shortcuts on your desktop for easy access or drag these to your dock There is also a ReadMe file which is a guide to configuration which is a cut down version of this manual to aid getting set up quickly ERGO Control Panel ERGO Cal Once the process is completed you will see the screen below At this point you can now connect ERGO to your computer and begin the calibration process described later in this document Note The first time you connect ERGO to your computer you will see driver install messages near your system clock at the lower right of your screen This is expected and once the messages are clear you may move on gig KRK ERGO Software Setup You may now enjoy your KRK ERGO INSTALL SUCCESSFUL You may now connect ERGO to your computer You may see messages appear while Windows locates the drivers Once complete you can begin using ERGO IF this is a new install please ensure you tick the box below to start the ERGO Calibration application V Run ERGO Cal lt Back Finish Cance 15 At this point you can now connect ERGO to your computer and begin the calibration process described in the next section Page 25 enhanced room geometry optimization 23 Installation for Apple Mac OSX Systems Note Please ensure ERGO is not connected to your computer before start
46. ou can also apply the same principle using a dual stereo monitoring system Note ERGO uses a mono summed signal from the B Left output only this should be the only connection you make to your subwoofers LEFT input A Monitors KRK VXT 6 Shown Optional Subwoofer connected to B output Power Supply Ape rand required if not bus powered rn Headphones Stereo Mono Line Input KRK KNS 8400 shown Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface L Digital Input PbIF Co axial Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface Page 18 OI lt enhanced room geometry optimization 18 Connecting ERGO to an existing audio interface This configuration is identical to using ERGO as stand alone device Here ERGO simply sits in the path between your existing audio interface and your monitors In this mode ERGO will perform correction on the signal appearing at either the digital or analog inputs Note The digital inputs are treated as a priority so if an S PDIF source is connected it will be used instead of the analog input If you wish to use the analog inputs please ensure a digital source is not connected In this mode the controls all operate according to the mode calibrations were performed with or without Subwoofer Below a simple dual monitor system is shown you can also apply the same principle using a 2 1 system A Mo
47. ow latency high quality MAC compatible audio driver that is built directly in to the OS X operating system Decibel dB A unit of measurement for expressing sound pressure level SPL signal level and variation or differences in signal level D A Convertor A circuit used to change digital data into analog voltage levels that approximate the original analog audio waveform DSP An abbreviation for Digital Signal Processing Any signal processing done after an analog audio signal has been converted into digital audio Dynamic Range The level difference expressed in dB between the loudest level and quietest level of a recording or live audio source Filter A circuit that removes or acts on certain frequency signals above or below a predetermined point called a cut off frequency Frequency The rate or speed at which an audio source generates measured in complete cycles per second The number of cycles that occur in one second is call hertz Hz Frequency Range The range of frequencies a device is capable of accurately reproducing Page 49 RI enhanced room geometry optimization Frequency Response A plot or graph of frequencies that an audio device such as a microphone amplifier or speaker can accurately reproduce within stated parameters or conditions Harmonics A tone mixed with whole number multiples of the fundamental tone that distinguish the pitch of a particular instrument or sound Harmonic Distortion Th
48. rded room correction can be enabled again Page 46 KRKE SYSTEMS enhanced room geometry optimization 29 Troubleshooting ERGO does not turn on Ensure you have power connected and ERGO is turned on using the power switch on the rear of the unit Remember the power can be provided using the supplied power adaptor or from a Firewire port must be 6 pin or 9 pin Most likely you are using a 4 pin mini FireWire port These FW ports are commonly found on PC laptops You need a standard 6 pin FW port in order to power ERGO The 2 pins that are missing are the pins that carry power The FireWire port is not supplying enough power for ERGO can be caused by having multiple Firewire devices connected Use the 12VDC power adapter to power up ERGO and of course check the wall socket is operational You do not have or cannot find the driver for ERGO Please download the latest drivers for your operating system from www krksys com Your computer does not have a 6 pin FireWire port on it If you have a 9 pin port you will need to purchase a 9 pin to 6 pin cable in order to use with ERGO Please ensure you buy a high quality cable from a well known brand as these are usually built to the 1394 specification and are more reliable than cheap alternatives Your computer doesn t have a FireWire adapter at all In most cases a FireWire interface can be easily added to a computer For laptops you need to look for either a PCMCIA or ExpressCard ba
49. s a trademark of Apple Computer Inc Blackfin is a registered trademark of Analog Devices Inc All other trademarks included herein are the property of their respective owners RoomPerfect is a registered trademark and the RoomPerfect logo is a trademark of Lyngdorf Audio A S Digidesign and ProTools are registered trademarks of Avid Technology Incin the United States and other countries Page 51
50. sed adapter which one to use depends on the card slot your computer is equipped with For desktops you should use an add in PCI FireWire card Please do not use a USB to FireWire adapter cable because it will severely degrade performance Also avoid cards with multiple interface types as this can also affect performance You are experiencing noise in audio recordings playback This can be many things Do you hear noise even when there s no software playback If so then the cause is likely a ground loop especially if it goes away when running the computer on battery power Please consult a qualified electrician if you believe you have grounding issues You are experiencing click and pops in audio recordings playback Does increasing the buffering in the driver make the problem go away If so then it could be an issue with your system performance For guidance in optimizing your computer to playback audio reliably please read the specific guides found on the CD or available from www krksys com Support of 1394 under Windows is a complex issue and there are many hotfix downloads which Microsoft offer for the various 1394 solutions depending on the manufacturer of the Firewire chipset used on your computer If you are experiencing problems with streaming audio or connectivity issues you search the Microsoft Support database for any 1394 hotfix downloads for your operating system The OHCI driver for your device may also affect perform
51. software on the disk Snow Leopard gt ae Summ T peep o lt a Change Install Location A Next you will need to enter your systems password to allow the installer to make changes If you don t have a password just leave the password field blank and press OK to continue faan Type your password to allow Installer to make i 3 changes Name Your Name gt Details Page 27 enhanced room geometry optimization 7 Once the process is completed you will see the screen below AAA Install KRK ERGO The installation was completed successfully Introduction Destination Sel Installation Type 8 Installation The installation was successful The software was installed Close 8 The installer will place a folder called ERGO within your Applications folder within that folder you will find the ERGO Control Panel and ERGO Cal application as shown below You can create shortcuts on your desktop for easy access or drag these to your dock The installer will automatically open a ReadMe file in TextEdit which is a guide to configuration which is a cut down version of this manual to aid getting set up quickly If using this manual you can disregard that document and close TextEdit ERGO Cal ERGO Control Panel 9 At this point you can now connect ERGO to your computer and begin the calibration process described in the next section
52. system performance when working in your chosen DAW ERGO does not place any processing load on the CPU when performing its room correction Can ERGO work with my existing computer audio interface Yes ERGO simply patches between the main Left Right analog outputs of your existing audio interface or will take an S PDIF format digital output from your existing audio interface or hardware This is a very simple and easy method to work with ERGO since there is no reconfiguring of your audio workstation or drivers Can ERGO work with AVID Digidesign Protools Yes simply patch ERGO between the main Left Right analog outputs of your Protools interface or will connect to the S PDIF outputs of your Protools rig Assign your main outputs in Protools to your chosen method digital or analog and ERGO will apply correction before the signal from your audio interface reaches your monitors Can ERGO work with any powered or passive monitors Yes ERGO is designed for active monitors but will work with passive monitors as well When using passive monitors make sure the amplifier has any equalization or filtering disabled Page 45 Kw enhanced room geometry optimization Can ERGO work with two sets of speakers Yes ERGO can switch between A and B speakers via its front panel controls Each set of speakers will need to be calibrated and will have their own correction filters so that when you are comparing or A B ing a mix the specific
53. t this point now your monitors are positioned you should choose your configuration and make a note of it then move to the next section and begin Installing ERGO 14 Connecting ERGO as an audio interface with a dual stereo monitoring system Below is the standard configuration when using ERGO as an audio interface with room correction for two pairs of stereo studio monitors A Monitors KRK VXT 6 Shown O O Power Supply required if not bus powered Headphones Stereo Mono Line Input KRK KNS 8400 shown Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface ERGO Cal Microphone Only required for calibration S lt Digital Input S PDIF Coaxial Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface External Firewire Drive External Firewire DSP Unit Must support 1394a or 1394b Focusrite Liquid Mix shown Apple OSX System Microsoft Windows System Note Connecting additional firewire devices reduces bandwidth where possible use 1394b Firewire800 connections Page 15 x enhanced room geometry optimization 15 Connecting ERGO as an audio interface with a 2 1 monitoring system Below is the standard configuration when using ERGO as an audio interface with room correction for a single set of stereo monitors augmented by a subwoofer Here ERGO allows the user to adjust the crossover frequency from the control panel while you are in the sweet spot The sub
54. tion Now by moving the SPL meter or your ears around the various potential speaker positions in the room you can listen for where the bass sounds the loudest That is where the speaker loading would potentially be at its greatest Once you find the optimal spot place the subwoofer at that position and listen to it from the console position Even without an SPL meter you can then use stepped band pass pink noise and sine wave sweeps to evaluate how even the bass response is Move the subwoofer around a foot at a time until the bass response is as even as possible at the listening position Subwoofer Rohe Focus Listening Position Page 13 enhanced room geometry optimization 12 Setting Monitor and Subwoofer Levels Once the stereo monitors and subwoofer are in position their levels need to be matched The process is Straightforward and is described below Obtain an SPL Sound Pressure Level meter these are very cheap and are now commonly available as Smartphone iPhone applications Set the low pass filter on the subwoofer back plate to 80 Hz Send a one octave wide band pass pink noise signal to your monitoring system the main speakers from ERGO or from the subwoofer if using the internal crossover A good choice is 500 to 1 000 Hz band passed pink noise which is within the fundamental frequency range of many vocalists and minimizes high frequency problems but doesn t excite the subwoofer Adjust your main monitors
55. to your computer via Firewire The next step is to install ERGO s drivers and software on to your computer Page 22 i eee enhanced room geometry optimization 22 Installation for Microsoft Windows Systems Note Please ensure ERGO is not connected to your computer before starting this procedure 1 Ifyou have downloaded the zipped file from the website please unzip the file by double clicking the icon with your left mouse button Note If you are installing from CD please refer to the ReadMe rtf file on the CD and follow the additional instructions d ERGO Software v1 07 2 This will open a folder showing the installer ERGO Software v1 07 3 Start the installer by double clicking the icon with your left mouse button M 4 Windows will ask one or two questions at this step 5 If using Windows 7 or Windows Vista you may be asked to Install or Don t Install please confirm by pressing Install If you receive a message asking to confirm the installation you probably have security settings which require you to manually confirm any installations Please check the message in the warning window regarding how to change your options if desired 6 You may be asked for confirmation to Run the program please press Run to start the installer Page 23 enhanced room geometry optimization 7 After these messages you will see the screen below please quit any running applications and press
56. ts 180mm 7 x 55mm 2 2 x 107mm 4 2 197mm 7 75 610g 21 5 oz 1394 Bus or External 12v 40 F 4 C to 110 F 43 C a 11 enhanced room geometry optimization 28 Frequently Asked Questions FAQs What is ERGO ERGO is an audio interface with built in digital room analysis and correction system It consists of the ERGO unit a measurement microphone and control software These three pieces are used to measure and analyze phase and frequency problems within a listening environment and then a powerful digital signal processor in the ERGO hardware unit processes audio to correct for these problems How does Room Correction help ERGO s licensed RoomPerfect room correction technology can help you make better more informed decisions about your mix If you find your mixes do not translate well from your studio to other listening environments it is most likely that your room is the problem ERGO corrects for the audio coloration in your room and this in turn allows mixes to translate better to numerous listening environments If your room has problems better speakers will not resolve the problem and while we endorse the acoustic treatment of your room quite often there are limitations of what can be expensive and time consuming With ERGO even if some large elements in the room change it s a simple as re calibrating to perform the optimal correction Do I need a computer to use ERGO ERGO only requires a
57. und of your room concentrate on your music mix faster and more accurately with results that will properly translate to other listening environments To read more about RoomPerfect and its benefits please visit the Lyngdorf Audio website http www lyngdorf com Page 6 a enhanced room geometry optimization 3 Features High performance state of the art Digital Signal Processor for room correction and analysis Mastering grade Analog to Digital and Digital to Analog converters Can be used as an Audio Interface with room correction or Stand Alone room correction Balanced 14 TRS Line Inputs Balanced 14 Line Outputs for dual system connection A B or 2 1 Connection A B Large Illuminated Analog Volume Control Illuminated Headphones control Illuminated Monitor Selection buttons Focus Global Bypass Mode controlled by illuminated button Patented RoomPerfect technology corrects phase and frequency problems ERGO Cal Software compatible with OSX and Windows platforms Professional calibrated measurement microphone and microphone stand adapter As ERGO uses new some new technology you may not be familiar with please refer to the glossary at the back of this manual to get more information about any of the terms used 4 ERGO Package Your ERGO package contains the following items ERGO hardware interface containing the monitoring controls Digital Signal Processing A D D A convertors and input output connectors
58. use analog or digital volume control ERGO uses a digitally controlled analog volume control This means that the signal to noise ratio of ERGO is constant throughout the volume setting This is an expensive method which is far superior to systems that use digital volume control since digital volume adjustments actually reduce the signal to noise ratio of the system at lower volumes ERGO is true and clear throughout its volume range The Left to Right matching or balance is also much better than a traditional analog potentiometer Does ERGO need external power No If you have a 6 pin or 9 pin Firewire connection ERGO can draw its power directly from the FireWire interface If using ERGO in stand alone mode you connect the external power supply provided Why does ERGO room correction only affect frequencies below 500Hz 90 of the main acoustic problems in studio control rooms occur in frequencies below 500Hz ERGO s use of RoomPerfect is designed to specifically correct this area of the freq spectrum To fix the remaining 10 or problems above 500HZ requires significantly more processing power because of the timing requirements of processing higher frequency components Does ERGO work during tracking or only during mix down ERGO s room correction should be bypassed during tracking As with all audio interfaces and processing should be disabled this results in the lowest latency when monitoring your performance After the track is reco
59. ut and see what works for you near wall or free space placement ERGO works in both cases Page 11 enhanced room geometry optimization 10 Stereo Monitor Placement There are two basic elements to consider before achieving the best possible performance from your monitors a Room Correction Treatment either acoustic or digital as ERGO or a combination of these methods b Optimal Positioning This covers the placement of all monitors and subwoofers in the room If you attempt any kind of acoustic treatment we recommend you hire a qualified studio acoustician who can identify and rectify the acoustic shortcomings of your control room You will hear a lot of talk about standing waves flutter decay time absorption and reflection and it may be expensive but if you run a commercial recording space consider it the cost of doing business If you plan to use ERGO only without acoustic room treatment this Section will take you through the procedure of placing your monitors using some common examples Where to Start Typically they should be placed so that that the listening position is fully covered with all monitors resting on the same horizontal plane To test a monitor for its imaging capability playback a song that includes acoustic instruments to fully represent the entire sound spectrum You can adjust the angle of each monitor by listening for dead spots Keep in mind changing the angle or position o
60. vantages of ERGO and the RoomPerfect technology is overcoming some traditional limitations When it comes to placement of traditional monitors it is actually possible to think differently with ERGO because of its use of RoomPerfect i e to break away from conventional free space placement Normally you need to choose a monitor placement well away from rear and sidewalls to secure the best possible frequency response Due to the fact that a traditional monitor has Omni polar dispersion in the bass region this free space placement has a big disadvantage namely that you actually risk destroying the impulse response The reason for this is that you hear both the direct sound from the speaker and later all the reflections from the walls The reflections are delayed as a consequence of the distance to the walls and will therefore arrive later thus smearing the attack of e g a drumbeat Typically back wall reflections are the most annoying because they arrive from the same direction as the direct sound from the loudspeaker Sidewall reflections are easier for the brain to cope with because they arrive from another direction Therefore they are often regarded as adding ambience and localization clues The close or near field monitor reduces room interaction This can be compared to the conventional stereo configuration or the large monitor arrangement in a recording studio where sounds emanating from the monitor or reflecting off cei
61. with ERGO or if connecting to a 4 pin or 9 pin port we advise purchasing high quality cables from good quality branded suppliers Firewire Bus Power This requires use of the 6 pin to 6 pin Firewire cable supplied with your product or the use of a 9 pin to 6 pin cable purchased separately Note bus power is only available on 6 pin and 9 pin Firewire connections if connecting to a laptop which only has a 4 pin Firewire connector you will need to use the external power supply and a 4 pin to 6 pin cable purchased separately Page 21 enhanced room geometry optimization 21 Preparing for Software Driver Installation Once you have selected your configuration and read the install notes you can go ahead and start connecting the system there are some simple rules to follow Do not turn your powered monitors or amplifier on until the system is totally connected and all devices upstream are powered and running normally This is good studio common sense and prevents your monitors trying to reproduce and potentially harmful sounds which occur when turning on other hardware Avoid crossing power and data cables or winding either in circles this can lead to degraded performance Always use the best quality cables you have access to this will ensure you get long term reliability and improve performance So now you have positioned and connected your monitoring system and you are prepared with the right knowledge to connect
62. woofer can also be muted from the control panel A Monitors KRK VXT 6 Shown Optional Subwoofer connected to B output Power Supply required if not bus powered Headphones Stereo Mono Line Input KRK KNS 8400 shown Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface ERGO Cal Microphone A Only required for calibration Digital Inpu6 PDIF Co axial Mixer Microphone Pre Amp DI Guitar Synthesizer Audio Interface d External Firewire Drive External Firewire DSP Unit Must support 1394a or 1394b Focusrite Liquid Mix shown Ta Apple OSX System Microsoft Wi ndows System Note Connecting additional firewire devices reduces bandwidth where possible use 1394b Firewire800 connections Page 16 a enhanced room geometry optimization 16 Connecting ERGO to an audio interface using dual 2 1 monitoring systems Below is the standard configuration when using ERGO as an audio interface with room correction for two pairs of stereo studio monitors both augmented by subwoofers Here the subwoofer takes the signals from audio and performs crossover functionality before passing the high pass filtered output to the main monitors Note in this configuration the sub can only be bypassed using a footswitch where possible Note ERGO uses a mono summed signal from the B Left output only this should be the only connection you make to your subwoofers LEFT input A Monitors KRK VX
63. y Factory Authorized Replacement Parts with the same characteristics as the original parts have been used and that the routine safety checks have been performed to guarantee that the equipment is in safe operating condition A REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FIRE ELECTRIC SHOCK OR OTHER HAZARDS ATTENTION POUR VITER LES CHOC ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUiAU FOND A This unit should be serviced by qualified service personnel when The power cord or the plug has been damaged Objects have fallen or liquid has been spilled into the unit The unit has been exposed to rain or liquids of any kind The unit does not appear to operate normally or exhibits a marked change in performance The device has been dropped or the enclosure damaged REGULATORY CERTIFICATION KRK declare under our sole responsibility that this product to which this declaration relates is in conformity with the following standards FC C KoHS REACh The Declarations of Conformity can be obtained from 382 Ave de la Couronne B 1050 Brussles Authorized European representative Phone 3226450500 Fax 326450505 Bla Page 3 enhanced room geometry optimization Contents FI COME VOM catia grantee pence E E NEE E E pact T OEA ee AE tees 5 l Metmodat USC eo sascecnsscaceasotcvesetmeon n a cau nsduiphe a ctaecaeeieh amiantiiee 5 2 ERGO ANd
64. you want to stop Some rooms take many measurements some can reach this level with only 3 measurements ERGO will not let you store a room correction until Room Knowledge is at least 90 You may continue taking additional measurements to increase Room Knowledge which will result in a more accurate correction filter After the final measurement you will see the following screen please press YES to store the measurement into ERGO Store measurement YES NO 27 When sufficient Room Knowledge has been obtained target curves focus filters listening position and global filters general room filter are generated automatically and stored in ERGO You will see the following message while this is done Please wait Page 38 a enhanced room geometry optimization 28 The next screen will ask you to release the calibration button on the rear of ERGO please do so Please release to continue 29 You will finally see the congratulations message below informing you that your room acoustic response is now optimized by ERGO Please press ENTER to perform a new calibration 30 You may now quit ERGO Cal and begin using ERGO following the guide in the next section If you have another set of monitors connected and ready to calibrate simply press enter and the procedure will re start If you wish to store your measurement data simply press the SAVE button and navigate to a suitable location to store your data

KRK ERGO USER MANUAL REV 2.01

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