Echo Audio Fire 4 User's Manual
Contents
1. 24 bit data resolution maintained throughout entire signal path Multiple sample rates from 32kHz to 96kHz Variable sample rate feature lets you select any rate between 32kHz 96kHz MIDI In Out 58 Appendix C Specifications Appendix C Specifications AudioFire8 Audio Performance Analog Inputs x2 balanced universal XLR TRS amp x6 balanced TRS Universal Inputs x2 balanced XLR TRS Frequency Response 10Hz to 20kHz 0 2dB Microphone Input Level balanced XLR EIN 129dBu Dynamic Range 111dB A weighted THD n 0 00446 A weighted Input Impedance 1 5Kohms Gain Adjustment 10 to 59dB Maximum Input Level at Minimum Gain 9dBu Guitar Line Input Level balanced TRS Dynamic Range 110dB A weighted THD n lt 0 001 A weighted Input Impedance 102Kohms Gain Adjustment 0 to 45dB Maximum Input Level at Minimum Gain 18dBu Normal Line Inputs x6 balanced TRS Frequency Response 20Hz to 20kHz 0 1dB Dynamic Range 113dB A weighted THD n 0 00296 A weighted Linearity 0 01 dB OdBFS to 100dBFS Nominal Input Level 4dBu or 10dBV Input Impedance 10Kohms Maximum Input Level 18dBu 59 Appendix C Specifications Appendix C Specifications Analog Outputs x8 balanced TRS Frequency Response 10Hz to 20kHz 0 1dB Dynamic Range 114dB A weighted THD n 0 00296 A weighted Nominal Output Level 4dBu or 10dBV Maximum Output Lev2. A FireWire cable was supplied with your AudioFire product S PDIF AudioFired and AudioFire8 Next to the FireWire connectors on the back of AudioFire4 and AudioFire8 is a pair of connectors labeled S PDIF IN and OUT These S PDIF connectors are used to transmit digital audio data between digital audio devices via an electrical signal 19 Connecting to the Audio Interface Connecting to the Audio Interface When connecting devices to the S PDIF jacks the use of standard analog RCA audio cables is not recommended For reliable S PDIF operation 75 ohm coaxial RG59 video cables are recommended MIDI Your AudioFire is equipped with MIDI I O connectors The MIDI ports can be used for receiving MIDI time code MTC or sending and receiving MIDI signals between your digital audio MIDI sequencing software and external sound modules keyboards MIDI controllers etc MIDI MIDI cabling is standardized and widely available MIDI and S PDIF Dongle AudioFire2 To conserve the space on your AudioFire2 the MIDI and S PDIF ports are located on an external cable included with your AudioFire2 This cable connects to the MiniDIN connector on the back of your AudioFire2 MIDI S PDIF This cable can be left off when you are not using MIDI or S PDIF The S PDIF and MIDI ports are labeled IN and OUT on the dongle 20 Connecting to the Audio Interface Connecting to the Audio Interface The S PDIF connectors are used
3. http www mackie com products tracktion tracktion html NOTE Tracktion version 1 does not support sample rates above 96kHz This completes the installation of the hardware and software for your AudioFire product 21 Installing Tracktion Console Software Console If you followed the instructions in Step 1 of the Installing the AudioFire Hardware and Software section of this manual then you installed a virtual control surface application called the AudioFire Console The console allows you to control the audio I O and clocking functions of your AudioFire product and it brings these controls to a single easy to use location From the console you can control the output levels select synchronization clocks and adjust input monitoring The examples in this section will be for AudioFire8 The controls for AudioFire2 AudioFire4 and AudioFire12 are similar Running the Console You can open the AudioFire console by going to the Applications folder or wherever you chose to put it during installation and double clicking on the icon Alternatively you can drag the icon to the Dock for easier access and just open it from there Automatic Flash Update As the console starts up it checks the firmware that is loaded in each AudioFire If the AudioFire is running old firmware a dialog will come up requesting your confirmation to update the firmware If you click Yes the firmware will be updated to the latest version and
4. monitors and playback quieter The level meters display the amount of signal being sent out of the selected outputs The gang button sets the gang mode If you are in gang mode the mute buttons will work together for the left and right channels for example clicking the mute on one channel activates the mute button on the other channel Also ganging ties the faders together so they will maintain their relative placement in regard to each other Analog Inputs The controls for the analog inputs are on the left side of the console and have the labels ANALOG and 1 through 8 at the top They are outlined in red in the picture above There is one strip or input channel corresponding to each of AudioFire8 s eight physical analog inputs The input level meters remain visible at all times whereas the input monitor controls pan solo mute faders and gang that you see will change depending on which output bus is currently selected 30 Console Software Console Software The input monitor controls are a little complicated Basically there is a different set of input monitor controls for each output bus but only one set is visible and changeable at a time In the example above the only set of input monitor controls that is visible and changeable is the one for the output bus called Analog 1 2 To see and change a different set of input monitor controls you will need to select a different output bus see the Bus Select
5. section above The level meters do not change when a different output bus is selected They always reflect the signal level being received on the inputs In the example above you can see that the signal level on the ANALOG Out 1 2 meters is less than that on the input meters This is because the ANALOG 1 2 faders have been adjusted to 19 thereby decreasing the amount of the input signal that is being sent to analog outputs 1 2 If the Analog 3 4 tab is selected the console would appear as in the example below 31 Console Software Console Software AudioFire8 0409 Console ANALOG 3 4 OUT ECHO ANALOG S PDIF 1 2 3 4 5 6 7 8 1 2 SOLO 4 4 10 10 4 4 4 4 MIDI OUT ANALOG ANALOG D 3 E Out 3 Out 4 Out A3ffOut A4 Solo Salo Solo Solo Solo TA mi Mute Mute Mute Mute Mute Mute ute Mute Mute The AudioFire8 Console Window Analog Out 3 4 Tab selected Note that since the Analog 3 4 tab is selected you are no longer looking at the input monitor and output controls for analog outputs 1 and 2 You are now looking at the controls for analog outputs 3 and 4 However you can still see the input signal on the input level meters for Analog input 1 2 At the top of each input channel below the label is a green label field that can be changed by clicking in it and typing Below the label is the nominal level setting for that input channel The labels nominal levels level meters and gang settings ar
6. 50 y A 1S e P 10 Se system requirements digital daba eios tei trend 50 y q digital recording 48 T digital to analog converter 48 technical support 43 dynamic range 00 0 eeeeeseeeeeeeeeeees 53 troubleshooting guide 44 E IBS eege 53 Echo Console uereg geesde 28 U I nbalaticed jase ebe 52 input level meters 17 W VO 18 Eege 43 installation EO 12 SVordelogk tern 21 39 installing Tracktion 29 M microphone preamp 17 MIDT Meme ROS 20 63 Index
7. Click the Settings tab at the top of the screen Select Audio Devices on the left Where it says Wave device click on the drop down menu and select your AudioFire product Now you should be able to see a list of the available audio devices for your AudioFire product Go ahead and enable the inputs and outputs you want to use with Tracktion by clicking on the red X and waiting for it turn into a green checkmark Make sure one of the outputs of your AudioFire product is the default wave output and that it is hooked up to some speakers or headphones You can check this setting on the right side of the Settings Audio devices screen of Tracktion Now you re ready to play some music Click on the Projects tab at the top of the screen and select one of the sample projects that come with Tracktion You will see a listing of all the files for that project in the large area to the right Double click on the file with the same name as the project This will open the project Now click on the play button in the bottom right section of the screen and you ll hear the sample project with your new AudioFire product Enjoy the music There are more detailed instructions for Tracktion in the HTML Ouick start Guide and help files which are available by hitting the F12 key while in Tracktion You can also find hints and tips in the Tracktion user s forums available through the Tracktion webpage here
8. Software Configuration Software Configuration By clicking on the MIDI Devices tab you will display the available CoreMIDI devices You should see your AudioFire product shown as an icon here Next you ll want to install Tracktion and learn about the AudioFire Console software Both are covered in the following sections of this manual 24 Software Configuration Installing Tracktion Installing Tracktion Your AudioFire comes bundled with the full version of Tracktion 1 audio multitrack recording MIDI editing and sampling software Install Tracktion from the AudioFire CDROM To install the software 1 Insert the AudioFire CD ROM into your CD ROM drive A CD ROM icon labeled Echo Digital Audio should appear on the desktop 2 Double click on the CD ROM icon Then double click on Open this to start Choose Install Tracktion Software from the main install window 3 Drag the Tracktion icon to the Applications folder Tracktion comes with an HTML Ouick start Guide and help files that you can open from the Help button inside Tracktion So you ll be able to get up and running with a minimum of hassles hopefully none at all You can also access the Tracktion Ouick start Guide and help files with the F12 key on your keyboard Authorize your copy of Tracktion Your copy of Tracktion will run in demo mode until you authorize it You will need to contact sales echoaudio com for you
9. audio interface to a FireWire port and to your other audio hardware install the Console software and install Tracktion The following steps will guide you through installing your AudioFire product Log In as Administrator In order to properly install your AudioFire product you need to make sure that you log in to your Mac with an account that has administrative privileges To verify that your account has administrative privileges open System Preferences from the Dock or from the Apple menu select Show All and then select Accounts in the System section Now select your account from the list on the left and click on the Security tab Make sure that the checkbox at the bottom labeled Allow user to administer this computer is checked If your account does not have administrative access then you will need to log out and log in with an account that does Check OS X Version OS X version 10 3 9 or later is required use your AudioFire product If you have a version lower than 10 3 9 your AudioFire product may not install or may not function properly To check your OS X version open About This Mac from the Apple menu Verify that you have OS X version 10 3 9 or later If you do not then you will need to either purchase an upgrade or download it with Software Update Run Software Update Before you install anything you should make sure that you have the most recent updates for Mac OS X installed This is esp
10. ii Introduction Introduction Thank you for choosing Echo Digital Audio We think you ll find your Echo product to be an extremely flexible high performance tool for your computer based hard disk recording system What You Should Have Received in the Box When you opened the box you should have found the following An audio interface box Four mounting screws with collars Two removable rack mount brackets AudioFire8 and AudioFire12 only A FireWire cable A power cable or power adapter A CD ROM containing Mac OS X Drivers Windows XP Drivers PDF Owner s Manual Tracktion multitrack recording MIDI editing and sampling software for Mac OS X amp Windows XP e HTML Tracktion User s Guide e A Quick Start Guide Introduction Introduction System Requirements In order to use AudioFire2 AudioFire4 AudioFire8 or AudioFire12 you ll need the following e An Apple brand Macintosh computer desktop or notebook with Mac OS X 10 3 9 or later An unused FireWire port A G4 or better processor G5 recommended A minimum 256Mb of RAM 512Mb highly recommended A fast high capacity IDE SCSI or FireWire hard disk drive e Peripheral audio equipment such as a mixer microphones studio monitors musical instruments etc 10 Introduction Installation Installation To properly install your AudioFire product you will need to log in as an administrator check OS X version run software update connect the
11. performance it is critical to use the appropriate cabling and connectors Analog Inputs and Outputs AudioFire2 AudioFire2 s front panel has two analog line inputs 1 2 an amber power indicator light and an 1 8 stereo headphone output jack with a corresponding volume knob which monitors analog outputs 3 and 4 labeled Headphones in the AudioFire Console The analog inputs operate with an input impedance of 10Kohms AudioFire2 has two analog line outputs on the rear panel The input and output connections can be used with balanced or unbalanced cables via the 4 connectors By default the inputs and outputs are set to receive or send a 4dBu signal MIDI 0 4 N LINE OUTPUTS x 120 SIPDIF 00 ues EE VDC FIREWIRE You can switch between 4dBu and 10dBV for each individual input and output via the console software see section below 14 Connecting to the Audio Interface Connecting to the Audio Interface Analog Inputs and Outputs AudioFire4 AudioFire4 s front panel has two universal inputs 1 2 with meters and trim knobs a phantom power indicator 48v and a power button with an amber power indicator light There is also an 1 8 stereo headphone output jack with a corresponding volume knob which monitors analog outputs 1 and 2 AudioFire4 has two analog line inputs 3 4 and four analog line outputs on the rear panel These analog inputs 3 4 operate with an input im
12. support issues are handled solely by Mackie Please do not call Echo for technical support regarding Tracktion You can find helpful information about Tracktion and links to user and support forums on the Internet at http www mackie com products tracktion tracktion html If you are still having problems with Tracktion you can contact Mackie Technical Support here http www mackie com support index html 43 Customer Service Appendix A Troubleshooting Guide Appendix A General Troubleshooting Guide Problem You can t get your AudioFire product to install properly under Mac OS 8 OS 9 or OS X 10 3 8 or lower Solution There is no driver support for AudioFire8 or AudioFire12 under Mac OS 8 or 9 There is only driver support for Mac OS X 10 3 9 or later Problem You ve installed your AudioFire product but it isn t listed in the System Preferences or the Audio MIDI Setup application Solution Your installation of OS X may be out of date Try running Software Update you ll find it in the System Preferences You need version 10 3 9 or later Problem You can t use more than one Echo product at a time with your audio software Solution This is a limitation of your audio software Currently Apple s CoreAudio spec does allow multiple hardware devices to be used simultaneously by an audio software program but most audio software programs currently do not support this feature Problem When you connect a bus powered F
13. the front and the other tab titles will be gray In this case Analog 1 2 is the currently selected output bus Clicking on an output bus tab simply selects the settings that are displayed This means all input monitor parameters such as volume pan and mute only apply to the audio coming out analog outputs 1 and 2 of AudioFire8 To select view and change the input monitoring and playback settings for another set of outputs you must select a different output bus by clicking on one of the other 29 Console Software Console Software output bus tabs AudioFire12 does not have S PDIF so it does not have a digital output bus it has 6 analog output bus tabs instead NOTE Analog outputs 3 and 4 for the AudioFire2 are labeled as Headphones in the console Master Output Bus Control The master bus control is the area on the far right of the console window It is outlined in purple in the picture above At the top are the labels ANALOG Out 1 and Out 2 This indicates you are currently controlling everything mixed to analog outputs 1 and 2 These channels correspond to the currently selected output bus tab Beneath the labels are two green label fields that can be changed by clicking in them and typing Below the green label fields are nominal level buttons mute buttons level meters and faders The mute buttons and faders affect everything being mixed to this bus Thus pulling the fader down will make both the input
14. you will need to restart your AudioFire before continuing Console Window The basic metaphor for the console interface is a digital mixing board and it works in terms of output busses An output bus represents a pair of outputs on your AudioFire hardware For example analog outputs 1 and 2 are an output bus The console window allows you to select an output bus and control what is mixed and sent to that output bus Audio played through the selected channels by an application any analog input and any digital input may be mixed to an output bus 28 Console Software Console Software Raad BXAARAV P 3 AudioFire8 0409 Console ANALOG 1 2 OUT ECHO ANALOG S PDIF 8 1 2 SOLO 1 2 3 4 5 6 7 i Yi I n TF 716 EST 3 TA MIDI OUT PAN PAN PAN PAN PAN PAN PAN PAN PAN PAN D x e ANALOG ANALOG 1 2 Outl Out 2 R31 RSL pe ay Ra A2 1Out ART A2 Solo Solo Solo Solo Solo Solo Solo Solo Solo Mute Mute Mute Mute Mute Mute Mute Mute LO MEMO TIHU TIHU ang TING ang The AudioFire8 Console Window Analog Out 1 2 Tab selected Bus Select Tabs The output bus is selected by clicking on one of the tabs at the top of the console window The above example shows the console window for AudioFire8 Five different output busses are shown here four analog busses and one digital bus Each output bus has its own tab marked either Analog or S PDIF and a channel number pair When you select a tab it will come to
15. 129dBu Dynamic Range 111dB A weighted THD n 0 00446 A weighted Input Impedance 1 5Kohms Gain Adjustment 10 to 59dB Maximum Input Level at Minimum Gain 9dBu Guitar Line Input Level balanced TRS Dynamic Range 110dB A weighted THD n lt 0 001 A weighted Input Impedance 102Kohms Gain Adjustment 0 to 45dB Maximum Input Level at Minimum Gain 18dBu Normal Line Inputs x2 balanced TRS Frequency Response 20Hz to 20kHz 0 1dB Dynamic Range 113dB A weighted THD n 0 00296 A weighted Linearity 0 01 dB OdBFS to 100dBFS Nominal Input Level 4dBu or 10dBV Input Impedance 10Kohms Maximum Input Level 18dBu 57 Appendix C Specifications Appendix C Specifications Analog Outputs x4 balanced TRS Frequency Response 10Hz to 20kHz 0 1dB Dynamic Range 114dB A weighted THD n 0 00296 A weighted Nominal Output Level 4dBu or 10dBV Maximum Output Level 17 2dBu AudioFire4 Hardware Host Interface 1394a FireWire Two high quality mic preamps with phantom power 48v Four balanced 14 analog inputs with precision 24 bit 128x oversampling analog to digital converters Four balanced 14 analog outputs with high performance 24 bit 128x oversampling digital to analog converters S PDIF digital I O with up to 24 bit resolution Trim control level meter and channel inserts for analog inputs 1 and 2 Headphone output with volume control
16. AUDIOFIRE 2 AUDIO 4 AUDIOFIRE 8 AUDIOF 12 Owner s Manual Version 2 0 for Macintosh Tested To Comply C With FCC Standards FOR OFFICE USE N222 Important Safety Instructions 1 Read Instructions Be sure to read all of the safety and operating instructions before operating this product 2 Retain Instructions The safety instructions and owner s manual should be retained for future reference 3 Heed Warnings All warnings on your Echo product and in the Owner s Manual should be followed 4 Follow Instructions All operating and use instructions should be followed 5 Moisture Water and moisture are detrimental to the continued good health of your Echo product Do not install or operate your Echo product near sources of water or moisture such as sinks damp basements leaky roofs etc 6 Heat Your Echo product should be situated away from sources of heat such as heaters or radiators 7 Power Sources This unit should be operated only from the type of power source indicated in this documentation or on your Echo product If you are unsure about the type of power at your location contact your local power company 8 Grounding Precautions should be taken so that the grounding capabilities of the unit are not undermined The AudioFire12 and AudioFire8 are provided with a cord with an equipment grounding conductor and grounding plug This plug must be plugged into an outlet that is properly installed and ground
17. Console examples the AudioFire is designated AudioFire8 0409 This is because two different audio interfaces were used This name will appear in your Sound panel and your Audio MIDI Setup panel With multiple AudioFires multiple console windows will open when you open the console Each console will be identified by the AudioFire s unique name If one console window is closed all windows will have to be closed and re opened in order to restore it 42 Console Software Customer Service Contacting Echo Customer Service If you experience any trouble with your Echo hardware please go to the support area of our website at www echoaudio com and check out the OuickTips amp FAQ s we have there If you can t find a solution to your problem there please fill out the provided technical support email form This form will be sent to our technical support staff and they will respond to you quickly Please fill out the form completely The best way to get the help you need is by giving us plenty of detailed information about your computer system your audio software and hardware and the problem you are having We do ask you to please read through this manual and the support area of our website before contacting us Also you may find an answer to your problem in the Appendices of this document starting on the next page Thank you for buying an Echo product Contacting Mackie Customer Service Note All Tracktion
18. Converting Sound into Numbers In a digital recording system sound is represented as a series of numbers with each number representing the voltage or amplitude of a sound wave at a particular moment in time The numbers are generated by an analog to digital converter or ADC which converts the signal from an analog audio source such as a guitar or a microphone connected to its input into numbers The ADC reads the input signal several thousand times a second and outputs a number based on the input that is read This number is called a sample The number of samples taken per second is called the sample rate On playback the process happens in reverse The series of numbers is played back through a digital to analog converter or DAC which converts the numbers back into an analog signal This signal can then be sent to an amplifier and speakers for listening In computers binary numbers are used to store the values that make up the samples Only two characters 1 and 0 are used The value of a character depends on its place in the number just as in the familiar decimal system Here are a few binary decimal equivalents BINARY DECIMAL 0000000000000000 0 0000000000000001 1 0000000000000011 3 0000000000000111 7 0000000000001111 15 0000000000011111 31 1111111111111111 65 535 Figure A Binary numbers and their decimal eguivalents 48 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recordin
19. E AND SOFTWARE eene 12 CONNECTING TO THE AUDIO INTERFACE eese nennen ener eene 14 SORETIWARECONEBIGUBATION 5 i eetveee io eastco ak rto e res vee Eee yero S E Er ee peers 22 AE E EIN TE 25 LAUNCHING TRACKTION AND ASSIGNING INPUTS amp OUTPUTS eene 26 RUNNING THE CONSOLE 3 tpi ei kalavarud 28 AUTOMATIC PLASH UPDATB EE 28 CONSOLE WINDOW ccinn eet dee eieiei dee ule Ola ese ple tubos ea ule toner itus 28 BUS SELECT TL ABS i5 debida oett evi esu etd aive st otv i exe top dde Cup 29 MASTER OUTPUT BUS CONTR Oba gedeien plaza Chen tx uer egene ees 30 ANALOU INPUTS EE 30 DIGITAL INPUTS AUDIOFIRE2 AUDIOFIRE4 AND AUDIOFIREB 33 PLAYBACK CONTROLS iti ats dude c debent fa evo Cat tede Duet e eda ex E 33 ADJUSTING PLAYBACK E ENEE 34 NOMINAR E EEN 24 SETTINGS KE 35 EE 36 KE EH 36 EE Ebene Deu coat 37 CONSOLE SETTINGS AND STAND ALONE Mopp 38 SYNCHRONIZING MULTIPLE DEVICES sss ssesssssssscrreressssssescecererrsesssseecererrsesssseeeee 39 USING MULTIPLE AUDIOFIRES sesssessesseseesseccerceccoeseesoecoesoecoeesoecoesoeeoeeseeeees 40 CONTACTING ECHO CUSTOMER SERVICE eere 43 CONTACTING MACKIE CUSTOMER SERVICE eere 43 APPENDIX A GENERAL TROUBLESHOOTING GUIDE 44 APPENDIX B AN INTRODUCTION TO DIGITAL RECORDING APPENDIX C SPECIFICAT IONS censes uoto oen pana e UFE o apr so CE ea Euu ener pra SUE e kae u EL
20. amplifier is perfectly balanced and the noise on both plus and minus is precisely equal the noise will completely cancel out In the real world this is not the case and some of the common mode noise will still make it through although at a much reduced level How well an input amplifier rejects this common mode noise is called the common mode rejection ratio abbreviated as CMRR and is expressed in dB Balanced outputs typically drive the plus and minus components of a balanced signal in one of two ways A differentially balanced output signal is one where the minus output is the mirror image of the plus output That is if the plus output is at 1 volt then the minus output is at 1 volt An impedance balanced output provides most of the benefits of a differentially balanced output at a lower cost In this case only the plus component actually carries the signal The minus component is tied to ground through a resistor so that the output impedance matches that of the plus component Since the impedances 52 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording are matched any noise added to the minus component will still be approximately the same as that picked up by the plus component and will be subtracted out by the input amplifier Your Echo product uses this type of output Balanced signals connect with either XLR connectors or TRS tip ring sleeve connector
21. analog input controls and have the labels S PDIF 1 and 2 at the top They are outlined in blue in the example on page 29 Their operation is identical to the analog inputs Playback Controls The playback controls are to the left of the master output controls and are similarly labeled except instead of Out they are labeled Play They are outlined in orange in the example on page 29 The playback controls affect the level of audio being played by an application out the currently selected output bus These controls operate the same as the input monitor controls except there are no pan knobs solo buttons or level meters 33 Console Software Console Software Adjusting Playback Volume Output volume adjustments are made in the digital domain When you lower a volume fader below OdB you are actually decreasing the number of available bits thereby taking away from the potential dynamic range of the system Therefore we suggest that whenever possible you leave the output faders Playback amp Output Bus set to OdB and perform any necessary attenuation on your external mixer When the playback volume controls are set to OdB and the input signal approaches the maximum pre clipping level you can achieve the full 24 bit dynamic range of the system Nominal Levels The console buttons that are labeled 4 or 10 are nominal level buttons These buttons allow you to change the nominal level settings for t
22. ate between 30kHz and 100kHz Otherwise you will get noise and or loss of sync 39 Console Software Console Software Note When synchronizing your AudioFire product to an external device via S PDIF or Word Clock you must set the AudioFire to the correct base clock rate See the following table for the correct base clock rate setting AudioFire12 Only External Clock Rate 30kHz 50kHz 50kHz 100kHz 100kHz 200kHz AudioFire Base 44 1 kHz or 88 2kHz or 176 4kHz or Clock Rate 48kHz 96kHz 192kHz Now let s take a look at some sample configurations and how you might set them up from a synchronization standpoint Let s start with a simple example Suppose that AudioFire is the only audio device used in your studio Since you have no other devices to synchronize with simply select Internal for AudioFire8 s input clock AudioFire8 will then use its own clock to control its operation Now a little more complicated set up You want to have an AudioFire8 synchronized to another device via word clock Simply set the AudioFire8 to Internal for its input clock Now connect the AudioFire8 to the other device via a BNC cable running from Word Clock Out on the AudioFire8 to Word Clock In on other device Now select Word for the other device s input sync The other device will slave to your AudioFire8 and they will now operate in unison No matter how many devices you are synchronizing the concept is essentially th
23. ct clock settings The clock master should be set to Internal clock and the slaves should be set to Word clock or S PDIF If these settings are changed while audio is running sync will be lost and your AudioFires will stop working until they are re synced and the audio is restarted Maximum AudioFires We have tested up to 5 AudioFires at once and we re confident that even more will work However FireWire can only handle a limited amount of data at once This chart shows the theoretical amount of bandwidth that is used by an AudioFire on the FireWire bus 48kHz 96kHz 192kHz AudioFire 8 13 81 27 16 AudioFire 12 16 24 32 02 63 58 Percentage of FireWire bandwidth used 4 Console Software Console Software We recommend using a maximum of 3 AudioFires on each FireWire bus Multiple FireWire connectors that are on the same FireWire card are all on the same FireWire bus Similarly all the FireWire connectors that are directly on your motherboard are on the same FireWire bus By purchasing an additional FireWire card you can add an additional FireWire bus and connect additional AudioFires to that bus Console and Channel Names When you install your AudioFire a 4 digit number will be appended giving it a unique name So if you install multiple AudioFires each will have a unique number In the installation examples above the AudioFire is designated AudioFire8 0312 In the
24. e level of 1 0 volts A OdBu signal has a voltage level of 775 volts Since 775 is approximately 2dB less than 1 0 converting dBV levels into dBu levels is as simple as subtracting 2dB 2 21 to be exact Signals are also occasionally represented with units of dBm This is an older unit that measures power instead of voltage levels with OdBm representing 1 milliwatt Earlier tube based audio equipment used standardized input and output impedances of 600 ohms so a OdBm signal was produced with a voltage of 775 volts Since most of today s equipment uses impedances other than 600 ohms it is more useful to represent signals by voltages rather than power and the dBu unit was introduced A signal level of OdBu is identical to a level of OdBm Digital signals after they are recorded no longer directly represent any physical quantity such as voltage or power and OdB is generally used to represent a full scale or maximum signal level All other signal levels are lower and are expressed as negative decibels Most meters on digital equipment have OdB at the top and range downward from there A signal that is 30dB below full scale would simply be referred to as a 30dB signal Nominal Signal Levels and Headroom Today s equipment is generally referred to as 4dBu equipment professional or OdBV equipment consumer These levels are the typical or nominal signal levels you can expect to see with professional studio equipment such as m
25. e same You are merely daisy chaining devices together using compatible clocks One device will operate as the source of the master clock with each successive device using that clock to sync Using Multiple AudioFires Multiple AudioFires can be used together and there is a lot of flexibility in the way they can be configured But there are some rules that must be followed in order for your AudioFires to work together These are instructions and guidelines for using multiple AudioFires together 40 Console Software Console Software Connecting to your computer You can connect multiple AudioFires to your computer by daisy chaining FireWire cables connecting one AudioFire to the next or by connecting each AudioFire to a different FireWire connector on your computer AudioFire12s AudioFire8s AudioFire4s and AudioFire2s can be mixed in any order and the clock master can be anywhere in the chain Note that 192kHz will only be supported when only AudioFire12s are used Clocking When using multiple AudioFires they MUST BE clock synced together as explained in the previous section Synchronizing Multiple Devices Using a BNC word clock cable or a S PDIF cable connect from the out to the in of the next AudioFire In this manner each AudioFire must be daisy chained The first AudioFire in the chain is the clock master the rest are clock slaves On the Settings tab of the AudioFire Console you must set each AudioFire to the corre
26. e the only things in this section that do not change when different output bus tabs are selected Moving down the input channel strip you find the input monitor controls starting with the input monitor pan knob This knob changes how the input channel is 32 Console Software Console Software monitored between the two channels of the currently selected output bus Holding the Ctrl key and clicking on a pan knob will set it to the center position Below each pan knob is a non selectable green field that tells you the current setting of the pan knob Note that adjusting the pan knob will not affect your recording as the input monitor controls only affect how the input signal is sent to or monitored on the outputs Below the pan knob are the monitor solo and mute buttons Activating the solo button will make sure that the selected output bus only monitors the inputs that are soloed Activating the mute button on an input channel will prevent it from being monitored by the currently selected output bus Again this does not affect recording These are followed by the monitor fader which controls the input monitor level Like the pan solo and mute controls this does not affect your recording level The faders also have gang buttons and their operation is the same as the gang button for the master output bus controls Digital Inputs AudioFire2 AudioFire4 and AudioFire8 The controls for the digital inputs can found to the right of the
27. ecially important If Mac OS X is out of date you may not be able to use your AudioFire product at all To do this open Software Update from the Apple menu Download and install all of the updates including updates for software like iTunes iDVD iMovie QuickTime GarageBand etc 11 Installation Installation Installing the AudioFire Hardware and Software Now that you have logged in as an administrator checked the OS X version and updated your software you are ready to install your AudioFire product in your computer 1 Install the AudioFire Console Insert the AudioFire Install CD ROM into your machine Double click on Open this to start Click on the Install AudioFire Console button and follow the on screen instructions This is also a good time to copy the manual to your hard drive as well Once you have installed the console locate the AudioFire interface box the power cable and the FireWire cable If you are installing an AudioFire8 or AudioFire12 securely mount the interface into your equipment rack If you will not be mounting the box in a rack then be sure to place the interface box in a secure location If you have AudioFire8 or AudioFire12 plug the power cable firmly into the interface and a power socket and then turn on the interface by pressing the power button If you have AudioFire2 or AudioFire4 your AudioFire can be powered directly through FireWire No external power supply is need
28. ed The DC adapter is included for users of Windows notebook computers that have only an unpowered 4 pin FireWire connector Plug one end of the FireWire cable into the FireWire connector on the rear of the AudioFire interface Attach the other end of the FireWire cable to an open FireWire port on your computer If the connector does not match the port on your computer then you will need to get an adapter Your Mac will automatically recognize your new AudioFire product without any fanfare See the Software Configuration section below for more info 12 Installation Installation NOTE You should check the driver downloads area of our website www echoaudio com for any software updates and install them before continuing The AudioFire hardware must be installed and powered on for the firmware update to load properly You should also check the website periodically in the future in case any more updates are released at a later time 6 You can now attach external audio devices to the connectors on the AudioFire interface box Information on attaching external devices to the audio interface box may be found in the following section Connecting to the Audio Interface 13 Installation Connecting to the Audio Interface Connecting to the Audio Interface The AudioFire2 AudioFire4 AudioFire8 and AudioFire12 audio interfaces contain a wide variety of connections that allow great flexibility in operation For optimal
29. ed Echo Dealer in the United States of America to be free of defects in materials and manufacturing workmanship for a period of one year from the date of original purchase During the warranty period Echo shall at its option either repair or replace any product that proves to be defective upon inspection by Echo Final determination of warranty coverage lies solely with Echo Echo reserves the right to update any unit returned for repair and reserves the right to change or improve the design of the product at any time without notice This is your sole warranty Echo does not authorize any third party including any dealer or sales representative to assume any liability on behalf of Echo or to make any warranty for Echo Service and repairs of Echo products are to be performed only at the factory see below unless otherwise authorized in advance by the Echo Service Department Unauthorized service repair or modification will void this warranty To obtain factory service Contact Echo Digital Audio Corporation at 805 684 4593 9AM to 4PM Monday through Friday Pacific Time If necessary you will be given a return authorization number Products returned without an RA number will be refused Echo may at its option require proof of the original date of purchase in the form of a dated copy of the original authorized dealer s invoice or sales receipt Pack the product in its original shipping carton and attach a description of the problem along w
30. ed in accordance with all local rules and ordinances Do not modify the plug provided with the equipment If the plug will not fit into your outlet have a proper outlet installed by a qualified electrician 9 Power Cord Protection Power supply cords should be routed so that they are unlikely to be walked on or pinched by items placed upon or against them Pay particular attention to protecting the plugs outlets and the point at which the cord exits your Echo product 10 Servicing Do not attempt to service this unit yourself as opening the case will expose you to hazardous voltage or other dangers All servicing should be referred to qualified service personnel 11 Damage Requiring Service Unplug this unit and refer it to a qualified service technician when any of the following occur a Objects have fallen or liquid has spilled into the unit b The product has been exposed to rain or water c The product does not operate normally or when a marked change in performance is noticed d The product has been dropped or damaged in any way Registering your product online at http www echoaudio com support register php allows us to register key information so that we may handle problems faster and inform you of advance information on upgrades and other news Thank you in advance for registering We hope you enjoy your Echo product Limited Warranty Echo Digital Audio Corporation warrants this product when purchased at an Authoriz
31. el 17 2dBu AudioFire8 Hardware Host Interface 1394a FireWire Two high quality mic preamps with phantom power 48v Eight balanced 14 analog inputs with precision 24 bit 128x oversampling analog to digital converters Eight balanced 4 analog outputs with high performance 24 bit 128x oversampling digital to analog converters S PDIF digital I O with up to 24 bit resolution Trim control level meter and channel inserts for analog inputs 1 and 2 Headphone output with volume control On board 32 bit 1 6 gigaflop DSP 24 bit data resolution maintained throughout entire signal path Multiple sample rates from 32kHz to 96kHz Variable sample rate feature lets you select any rate between 32kHz 96kHz MIDI In Out Word clock I O 60 Appendix C Specifications Appendix C Specifications AudioFire12 Audio Performance Analog Inputs x12 balanced TRS Frequency Response 20Hz to 20kHz 0 1dB Ss Dynamic Range 113dB A weighted THD n 0 00296 A weighted Nominal Input Level 4dBu or 10dBV Input Impedance 10Kohms Maximum Input Level 17 5dBu Analog Outputs x12 balanced TRS Frequency Response 10Hz to 20kHz 0 1dB Ss Dynamic Range 114dB A weighted THD n 0 00296 A weighted Nominal Output Level 4dBu or 100BV Maximum Output Level 17 5dBu AudioFire12 Hardware Host Interface 1394a FireWire Twelve balanced 4 analog inputs with preci
32. elect the Locked setting Clock Source Under clock source you may select the input clock source The clock source setting is used to synchronize your AudioFire hardware to another piece of audio hardware If a given synchronization source input clock is not detected that clock source will be grayed out You will only be allowed to select input clocks that are currently connected For more information please refer to Synchronizing Multiple Devices later in this manual If an external clock is selected and that clock is disconnected the button will turn red You will either need to reconnect the clock source or select the internal clock button S PDIF Format AudioFire2 AudioFire4 and AudioFire8 can transmit digital information in two formats professional or consumer The primary difference between the two is in the implementation of the SCMS copy protection bit which in the Consumer format prevents the user from making digital copies of a digital copy 36 Console Software Console Software The S PDIF output defaults to the Consumer format If you are recording from your AudioFire8 into a professional DAT deck CD recorder or Mini Disc recorder the device may not be able to recognize the signal until you switch the output to Consumer Select the appropriate format for your DAT CD recorder or Mini Disc recorder if you don t know which one to use and are having difficulties simply try the one that is no
33. enu select Show All and select the Sound panel Under the Output tab you should see your AudioFire product listed as a sound output device If you want to use your AudioFire product with iTunes iDVD iMovie QuickTime etc you will need to select it as the sound output device eo Sound CO e m MO E Y E Show All Displays Sound Network Startup Disk Sound Effects Output Input Choose a device for sound output Name Internal speakers Built in Audio AudioFire8 0312 FireWire Settings for the selected device The selected device has no output controls Output volume m Mute vi Show volume in menu bar 22 Software Configuration Software Configuration You can also check out your hardware with the Audio MIDI Setup application Go to your Applications folder on your hard disk and from there to the Utilities folder Open Audio MIDI Setup In addition to listing all the audio devices in the system Audio MIDI Setup lets you examine the various audio formats supported by the hardware in your Mac Audio Devic MIDI Devices AudioFire8 0312 ES e AudioFire8 0312 E y amp AudioFire8 0312 t e AudioFire8 0312 EA Configure Speakers zeman je 10ch 24bit E 96000 0z 10ch 24bit 144 n a n a n a na D JOO 2 C O O O C Cl n a na n a nma n a na n a na ou s uw w e 2 9 m um E a N ra S C 0 0 0 n a n a 23
34. g Each digit in the number is called a bit The binary numbers expressed in Figure A are sixteen bits long and have a maximum value of 65 535 The more bits that are used to store the sampled value the more closely it will represent the source signal In a 16 bit system there are 65 535 possible combinations of zeroes and ones so 65 535 different voltages can be digitally represented See Figure A above Input Signal Output Signal 8 bits 16 bits 24 bits Figure B The more bits there are available the more accurate the representation of the signal and the greater the dynamic range Your Echo product s analog inputs use 24 bit ADCs which means that the incoming signal can be represented by any of over 16 million possible values The output DACs are also 24 bit again over 16 million values are possible The S PDIF inputs and outputs also support signals with up to 24 bit resolution Your Echo product processes signals internally with 24 bit resolution to insure that there is no degradation to the audio signal as it is processed through the system The number of bits available also determines the potential dynamic range of the device Moving a binary number one space to the left will multiply the value by two so each additional bit doubles the number of possible values that may be represented Each doubling of the number of values provides 6dB of additional dynamic range see decibel section below So a 24 bit system can theoretical
35. he analog inputs and outputs By default the levels are set to send a 4dBu signal You can switch between 4dBu professional level and 10dBV consumer level for each analog output and input by clicking on the appropriate button This feature allows you to connect either professional or consumer gear to each input and output 34 Console Software Console Software Settings Tab Clicking the Settings tab allows you to access settings for controlling your AudioFire hardware The Settings page includes the sample rate clock source S PDIF format and version information AudioFire8 0409 Console SETTINGS Sample rate 32000 44100 3001 88200 96000 S PDIF format Professional Version information Console 3 0 2 ARM firmware 2 0 6 DSP firmware 2 0 6 The AudioFire8 Console Window Analog Out 3 4 Tab selected 35 Console Software Console Software Sample Rate The sample rate for your AudioFire hardware is set here The sample rate also known as clock rate affects recording and playback For more information please refer to Appendix C An Introduction to Digital Recording The application or audio software you are using may change the sample rate The settings tab gives you an easy way to see exactly what sample rate your audio is set to The Locked setting allows you to lock the sample rate If you want to always run at a particular sample rate and block software from changing the sample rate s
36. igned to 53 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording read these levels the low noise requirements of the surrounding circuitry such as power supplies and amplifiers would be so stringent that they would either be impossible or too expensive to build In answering the second question consider the fact that music is often compressed or amplified after it is recorded and that some headroom is necessary when recording to avoid clipping The only way that 96dB would be adequate is if all music were recorded so that the peaks were just under full scale and no compression or amplification was going to be applied after recording Any time recorded music is amplified so is the noise at the low end Your Echo product has enough dynamic range to allow sufficient headroom and post processing to be applied while still keeping the noise either off the recording completely or down as far as possible 54 Appendix B An Introduction to Digital Recording Appendix C Specifications Appendix C Specifications AudioFire2 Audio Performance Analog Inputs x2 balanced TRS Line Inputs x2 balanced TRS Frequency Response 20Hz to 20kHz 0 1dB Dynamic Range 113dB A weighted THD n 0 00296 A weighted Linearity 0 01 dB OdBFS to 100dBFS Nominal Input Level 4dBu or 10dBV Input Impedance 10Kohms Maximum Input Level 18dBu Analog Outputs x2 balanced TRS Fre
37. ireWire device to your AudioFire product it does not receive power Solution Your AudioFire product does not pass power from the computer on its FireWire connector Use a FireWire device with an external power adapter 44 Appendix A Troubleshooting Guide Appendix A Troubleshooting Guide Problem You are unable to get your DAT recorder to recognize the S PDIF output from AudioFire2 AudioFire4 or AudioFire8 Solution Digital information is transmitted in either of two modes professional or consumer The professional mode is usually implemented in devices that are likely to be used in professional recording environments whereas the consumer mode is commonly implemented on equipment designed for home use in the consumer market The primary difference between the two modes is in the implementation of the SCMS copy protection bit which in the consumer format prevents the user from making digital copies of a digital copy In most professional equipment this copy protection bit can be turned off or on according to the user s needs In consumer products the SCMS bit is always enabled Unfortunately there is no way for the transmitting device to automatically detect which format the receiving device is able to accept If you have a DAT deck that is not able to read the S PDIF output from your AudioFire chances are it is transmitting in the mode that the deck is not equipped to handle We have provided a software switch in the d
38. ith your name and a phone number where Echo can contact you if necessary Ship the product insured and freight prepaid to Echo Digital Audio Corporation 6450 Via Real Suite 1 Carpinteria CA 93013 DISCLAIMER AND LIMITATION OF WARRANTY Echo makes no other warranties express implied or otherwise regarding Echo products and specifically disclaims any warranty for merchantability or fitness for a particular purpose The exclusion of implied warranties is not permitted in some states and the exclusions specified herein may not apply to you This warranty provides you with specific legal rights There may be other rights that you have which vary from state to state In no event will Echo be liable for any lost profits or for any consequential direct or indirect damages however caused and on any theory of liability arising from this warranty and sale 2005 by Echo Digital Audio Corporation 6309 Carpinteria Ave 300 Carpinteria CA 93013 Echo and AudioFire are trademarks of Echo Digital Audio Corporation Tracktion is a trademark of LOUD Technologies Inc Apple FireWire iTunes iMovie iDVD Mac Macintosh Mac OS Power Mac PowerBook QuickTime and GarageBand are trademarks of Apple Computer Inc WHAT YOU SHOULD HAVE RECEIVED IN THE BOX eee 9 SYSTEM REQUIREMENTS EE 10 LOGIN AS ADMINISTRATOR EE 11 CHECK OSX WER SION iela last 11 RUN SOFTWARE UPDATE EE 11 INSTALLING THE AUDIOFIRE HARDWAR
39. ixers or with consumer equipment such as home stereos and CD players A 4dBu signal has a voltage level of 1 23 volts and a 10dBV signal has a voltage level of 316 volts 5 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording The above nominal levels represent typical or average levels that are often exceeded when recording loud signals such as drum beats The difference between the nominal level and the loudest signal that can be recorded without clipping is called headroom Your Echo product provides approximately 14dB of headroom allowing an 18dBu signal to be recorded Unbalanced and Balanced Inputs and Outputs An unbalanced signal commonly used for guitars and consumer electronics contains two components a ground signal and a hot or active signal The ground is the barrel of a LAT connector and the shell of an RCA style connector A balanced signal contains two active signals instead of one in addition to the ground These are referred to as the plus and minus signals A balanced input amplifier amplifies the difference between these two signals Any extraneous noise picked up from power lines or other sources will appear equally on both the plus and minus inputs This is called common mode noise since it is common to both signals and the input amplifier will subtract the noise on the minus input from the noise on the plus input If the input
40. levels right up to the edge of clipping Analog Inputs and Outputs AudioFire12 AudioFirel2 s front panel has meters for the twelve analog inputs and outputs indicator lights for sample rate and clock synchronization and a power button with an amber power indicator light not shown below ANALOG INPUTS ANALOG OUTPUTS 4850 2789 1074112 1 2 37 47 65 77 SA MOIS LOS P 42 AudioFire12 has twelve analog line inputs and twelve analog line outputs on the rear panel The analog inputs operate with an input impedance of 10Kohms The input and output connections can be used with balanced or unbalanced cables via the 14 connectors LINE INPUTS PU 1 2 e e e 11 e 12 j d 5 4 d d 10 11 12 e e e 18 Connecting to the Audio Interface Connecting to the Audio Interface By default the inputs and outputs are set to receive or send a 4dBu signal You can switch between 4dBu and 10dBV for each individual input and output via the console software see Console section below The FireWire Connector On the rear panel of each AudioFire interface box is a pair of connectors with the FireWire symbol above them These six pin IEEE 1394a connectors operate at 400 Mbps and are used to connect the audio interface to your computer and to other FireWire devices These connectors do not pass power from the computer to other FireWire devices so other devices will require external power to function 70 V f
41. ly provide 144dB of dynamic range 6dB times 24 bits 2 144dB versus a 16 bit system with a maximum dynamic range of only 96dB 40 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording Also important to the quality of a digital recording is the frequency with which the samples are stored called the sample rate In order for a waveform to be faithfully digitized it must be sampled at a minimum of twice the highest frequency to be stored Failure to sample frequently enough results in a kind of distortion called aliasing If you like technical issues do some research on The Nyquist Theorem which explains why this happens In addition to aliasing sampling too slowly will result in reduced high frequency reproduction Your Echo product allows you to sample sound at up to 96 000 times per second 192 000 with AudioFire12 Once the waveform has been transformed into digital bits it must be stored When sampling in stereo at 96kHz using a 24 bit word size the system has to accommodate 4 608 000 bits per second In the past storing this vast amount of data was problematic Today computer based digital recording systems record the data directly to the computer s hard disk Today s hard disks are capable of storing large amounts of data though the performance of hard drives can vary substantially The speed and size of your hard drive will be a major determining factor in how many tracks of audio yo
42. mpressor EQ etc for the universal inputs 1 2 The channel inserts are wired tip send ring return and sleeve ground 16 Connecting to the Audio Interface Connecting to the Audio Interface Universal Inputs AudioFire4 and AudioFire8 The universal input connections can accept balanced or unbalanced signals via LA or XLR connectors Since your AudioFire has built in preamps you can just plug your microphone or guitar cable right into the universal input No external preamp direct box or mixer is needed To use a microphone plug the microphone s XLR cable into any of the universal inputs Whenever an XLR cable is connected to a universal input the microphone preamp is enabled and the gain range of the trim knob is set to range from 10 to 59dB The input impedance of each microphone preamp is 1 5Kohms Full scale input is 9dBu with the trim set to minimum gain Your AudioFire provides 48 volts of phantom power for microphones that require it On AudioFire4 to enable phantom power press the button labeled 48v in the AudioFire Console the 48V LED will light up and phantom power will be provided to all microphone inputs On AudioFire8 to enable phantom power press the button labeled 48v on your audio interface box the LED next to it will light up and phantom power will be provided to all microphone inputs Note Phantom power will not be applied to any line level equipment or guitars plugged in using cables
43. pedance of 10Kohms The input and output connections can be used with balanced or unbalanced cables via the 14 connectors By default the inputs and outputs are set to receive or send a 4dBu signal You can switch between 4dBu and 10dBV for each individual input and output via the console software see section below Analog Inputs and Outputs AudioFire8 AudioFire8 s front panel has two universal inputs 1 2 with meters and trim knobs a phantom power switch and light 48v and a power button with an amber power indicator light not shown below There is also a 4 stereo 15 Connecting to the Audio Interface Connecting to the Audio Interface headphone output jack with a corresponding volume knob which monitors analog outputs 1 and 2 Mm 3 PHONES UNIV IN 2 AudioFire8 has six analog line inputs 3 8 and eight analog line outputs on the rear panel These analog inputs 3 8 operate with an input impedance of 10Kohms The input and output connections can be used with balanced or unbalanced cables via the 14 connectors By default the inputs and outputs are set to receive or send a 4dBu signal CHANNEL INPUTS INSERT LINE OUTPUTS You can switch between 4dBu and 10dBV for each individual input and output via the console software see section below There are also two channel inserts on the rear panel where you can connect a serial effects device co
44. quency Response 10Hz to 20kHz 0 1dB Dynamic Range 114dB A weighted THD n 0 00296 A weighted Nominal Output Level 4dBu or 100BV Maximum Output Level 17 2dBu Headphone Output x1 stereo mini Frequency Response 10Hz to 20kHz 0 1dB Dynamic Range 114dB A weighted THD n 0 00296 A weighted Nominal Output Level 4dBu or 10dBV Maximum Output Level 17 2dBu 55 Appendix C Specifications Appendix C Specifications AudioFire2 Hardware Host Interface 1394a FireWire Two balanced 14 analog inputs with precision 24 bit 128x oversampling analog to digital converters Two balanced 4 analog outputs with high performance 24 bit 128x oversampling digital to analog converters One stereo headphone 1 8 analog output with high performance 24 bit 128x oversampling digital to analog converters Volume control for headphone output S PDIF digital I O with up to 24 bit resolution 24 bit data resolution maintained throughout entire signal path Multiple sample rates from 32kHz to 96kHz Variable sample rate feature lets you select any rate between 32kHz 96kHz MIDI In Out 56 Appendix C Specifications Appendix C Specifications AudioFire4 Audio Performance Analog Inputs x2 balanced universal XLR TRS amp x2 balanced TRS Universal Inputs x2 balanced XLR TRS Frequency Response 10Hz to 20kHz 0 2dB Microphone Input Level balanced XLR EIN
45. r license code Then go to http www mackie com authorize and follow the instructions to authorize your copy of Tracktion NOTE DO NOT LOSE YOUR CODE Echo Digital Audio Corporation will not be responsible for lost Tracktion authorization codes 25 Installing Tracktion Installing Tracktion Launching Tracktion and Assigning Inputs amp Outputs Now it s time to launch the actual program and set a few options e Locate and double click the Tracktion icon in the Applications folder or wherever you copied it to earlier You may also want to put it in the Dock for easy access When Tracktion first runs it takes you to the Projects page Move the mouse pointer over various objects on the screen and you will notice that Tracktion uses pop up help to tell you about the interface Note that whenever you click on something you will see any available details controls or settings for it in the information windows at the bottom middle of the screen You can learn a lot just by clicking on things and reading the pop up help You can also access a quick start guide and a more detailed help document by clicking on the help button in the bottom left corner and selecting show the Tracktion help pages or by pressing the F12 key on your keyboard The first thing you ll want to do is set up Tracktion to play and record with your AudioFire product 26 Installing Tracktion Installing Tracktion Audio Settings 8 9
46. rating the clock and your AudioFire product Just because multiple devices are connected to the same computer doesn t mean they are synchronized Next be sure that you have selected the desired input clock source in the Console for your AudioFire product and that the sample rate matches the incoming clock Problem You re syncing to an external device and suddenly you ve lost sync Solution Whenever your AudioFire product is syncing to an external device and you change the sample rate in that device you may need to reset the input clock setting in the AudioFire Console software Just click on the appropriate input clock button to reset it Problem Recordings made using the S PDIF input contain occasional pops or skips Solution When recording with the S PDIF input you must manually select the S PDIF clock as the input clock This can be done from the console 46 Appendix A Troubleshooting Guide Appendix A Troubleshooting Guide Problem The sound cuts in and out or the left or right channel doesn t work Solution You may have a bad audio cable Try using a different cable in the problem channel Problem There is no sound unless I pull the audio plug out a little Solution Not all 14 plugs are made to the exact same dimensions Try a plug cable from a different manufacturer 47 Appendix A Troubleshooting Guide Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording
47. river that allows you to select which mode AudioFire8 transmits To access this switch go to the console Click on the Settings tab In the window that appears you ll see a pair of radio buttons in an area labeled S PDIF Format one radio button is labeled Consumer and the other Professional Select the appropriate format for your DAT if you don t know which one to use simply select the one that is not currently checked Now click the Close button and again try recording to your DAT Note AudioFire never transmits the SCMS bit regardless of which mode is selected 45 Appendix A Troubleshooting Guide Appendix A Troubleshooting Guide Problem When you play an audio file it plays at an altered pitch Solution When your AudioFire product is set to synchronize with an external device it will play back at the rate generated by that device For example if the sound you are playing was sampled at 44 1 KHz but you are synchronized with a device running at 96kHz the sound will play back at this faster rate You have four choices ignore the altered pitch switch to your AudioFire product s internal clock change the sample rate of the external device or use a different device for the sound playback Problem Your AudioFire product doesn t seem to recognize the synchronization clock to which it is connected Solution Although it may seem obvious the first thing to check 1s that there is a physical connection between the device gene
48. s Your Echo product uses XLR connectors for microphones and TRS connectors for connecting balanced and unbalanced line level signals Sleeve Ring D The three sections of a TRS connector are used to transmit the three components of a balanced signal T plus R minus S ground Dynamic Range Dynamic range represents the difference between the maximum signal that can be recorded and the noise floor or level of noise with no signal present A system with a high dynamic range will be quieter than one with a lower dynamic range Dynamic range is a very important specification and your echo product uses converters that have very high dynamic range Theoretically a 24 bit system has a dynamic range of 144dB and a 16 bit system has a dynamic range of 96dB Two questions immediately come to mind 1 Why does my Echo product only have a dynamic range of 110 to 114dB 2 For mastering 16 bit CDs with a dynamic range of 96dB isn t anything more than 96dB just overkill First today s analog to digital converters typically produce a full scale input voltage with an input of 7dBu If they were to have 144dB of dynamic range they would have to be capable of resolving signals as small as 137dBu 7dBu 144dBu or approximately 10 nano volts That s 10 one billionths of a volt Transistors and resistors produce noise in this range just by having electrons moving around due to heat Even if the converters could be perfectly des
49. sion 24 bit 128x oversampling analog to digital converters Twelve balanced 4 analog outputs with high performance 24 bit 128x oversampling digital to analog converters evel meters on front panel for analog inputs and outputs and sync On board 32 bit 1 6 gigaflop DSP 24 bit data resolution maintained throughout entire signal path Multiple sample rates from 32kHz to 192kHz 61 Appendix C Specifications Appendix C Specifications Variable sample rate feature lets you select any rate between 32kHz 192kHz MIDI In Out Word clock I O 62 Appendix C Specifications Index A MIDI time code 20 21 n MILE t 20 21 adjusting playback levels 34 B analog to digital converter 48 B phantom power esses 17 professional mode 45 balanced cedere ard a RM USE 52 S C S PDIF Gee 19 20 36 39 45 46 CD ROM contents 9 S PDIF settings ee 36 clock settings DP 36 safety instructions SE 3 console sessions srrrssettese 38 sample TALE secte tiri this 48 CORTE mode DEEN eeccccccccccos 45 SCMS copy protection Stik wats ects 45 contacting customer service 43 specifications sese 55 contents vevveeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 9 stand alone mode EE 38 D synchronization 39 46 synchronizing multiple devices 39 ice m c I
50. t currently checked Note No Echo hardware transmits the SCMS bit regardless of which format is selected Version Information This section displays version information for all the components of your AudioFire system This information will be required if you are making a support request 37 Console Software Console Software Console Settings and Stand Alone Mode When the console is closed all the console mixer settings for your AudioFire are saved to flash memory in the AudioFire So these settings will be recalled when you reboot your AudioFire or move it to another computer Your AudioFire need not be connected to a computer to operate This is called stand alone mode Simply set the mixer setting as you desire in the console and close the console to save those settings to flash memory Then when you turn on your AudioFire those settings will automatically be loaded into the AudioFire s internal mixer 38 Console Software Console Software Synchronizing Multiple Devices Your AudioFire is designed to work alongside other audio equipment If you are planning on using your AudioFire with other audio equipment please note the following You can use your AudioFire product with other audio devices outside of your computer but in order for accurate synchronization to occur the other audio product s must support a synchronization mode that is compatible with your AudioFire hardware Without such synchronization the indi
51. to transmit digital audio data between digital audio devices via an electrical signal When connecting devices to the S PDIF jacks the use of standard analog RCA audio cables is not recommended For reliable S PDIF operation 75 ohm coaxial RG59 video cables are recommended The MIDI ports can be used for receiving MIDI time code MTC or sending and receiving MIDI signals between your digital audio MIDI sequencing software and external sound modules keyboards MIDI controllers etc MIDI cabling is highly standardized and widely available Word Clock AudioFire8 and AudioFire12 only Next to the MIDI ports are the Word Clock connectors These connectors allow you to synchronize your Echo product to any other device equipped with a Word Clock connector WORD CLOCK The Word Clock I O uses a BNC connector As with the S PDIF I O a shielded 75 ohm RG 59 coaxial video cable should be used BNC connectors have been widely used in the electronics industry for both video and computer networking However computer networks use 50 ohm RG 58 coaxial cables and not the 75 ohm RG 59 cable used by video For reliable word clock operation use only video grade cables with your Echo product 21 Connecting to the Audio Interface Software Configuration Software Configuration Now that you have installed your AudioFire product you can verify that everything is working properly Open System Preferences from the Dock or Apple m
52. u will be able to simultaneously record and playback Decibels Audio signal levels are generally expressed in units called decibels which are abbreviated as dB This is a logarithmic scale where each doubling of signal level is represented by an increase of 6dB Therefore a signal of 6dB is twice as big as a OdB signal and a signal of 12dB is four times as big as a OdB signal Since digital audio signals are represented by binary data each bit of audio information represents 6dB A 16 bit number can represent a total range of 96dB and a 24 bit number can represent a total range of 144dB 6 times the number of bits It s much easier to say that one signal is 72dB less than another instead of saying it is 1 4096 the size of the other one It also more accurately represents the way we hear sounds since the smaller signal in the above example will still be audible and not appear to be only 1 4096 as loud when we listen to it Just as there are different types of degrees used to represent temperature Fahrenheit Celsius etc there are different types of decibels used to represent the 50 Appendix B An Introduction to Digital Recording Appendix B An Introduction to Digital Recording level of analog audio signals The most common are dBu and dBV decibels Both of these represent voltage levels and still double for every increase of 6dB It is only the reference point or OdB level that is different A OdBV signal has a voltag
53. vidual pieces of equipment will act independently of each other This scenario may be fine for some musical applications however it is not appropriate for situations where sample accurate synchronization is required Let s take a brief look at the various synchronization types Word Clock The Word Clock connectors can be found on the back panel of AudioFire8 or AudioFire12 When your AudioFire product is set to Internal this synchronization clock runs at the AudioFire product s selected sample rate Think of it as a kind of electronic metronome which clicks back and forth at the digital sample rate It is one of the most widely used forms of synchronization in digital audio Your AudioFire product is always generating Word Clock on its Word Clock output BNC connector Although it can generate Word Clock at any sample rate it is set to your AudioFire product can only sync to Word Clock if the master device is set to a sample rate between 30kHz and 100kHz 200kHz for AudioFirel2 Otherwise you will get noise and or loss of sync S PDIF AudioFire2 AudioFire4 and AudioFire8 The Sony Phillips Digital Interchange Format is a serial bit stream that has a clock signal embedded in the data stream When recording from an S PDIF source your AudioFire will utilize the synchronization clock that is embedded in the S PDIF while it decodes the bit stream Your AudioFire can only sync to S PDIF clock if the master device is set to a sample r
54. with LAT connectors To record a guitar or line level signal just plug a cable with a 14 connector into one of the universal inputs Whenever a 1 4 cable is connected to a universal input the guitar line preamp is enabled and the gain range of the trim knob is set to range from 0 to 45 dB The guitar line preamp can support both guitar amp line level signals The input impedance of each guitar line preamp is 102Kohms Full scale input is 18dBu with the trim set to minimum gain If you want to adjust the input level of a universal input just turn the trim knob and watch the corresponding level meter The red light at the top will light anytime the input signal is greater than 6 5dBFS or within 6 5dB of clipping The yellow light represents a signal greater than 12 5dBFS and the green light represents a signal greater than 36 5dBFS 17 Connecting to the Audio Interface Connecting to the Audio Interface For optimal audio quality you should adjust the input trim knob so that your loudest recorded signal lights up the yellow light but not the red When the red meter light shines extra bright you ve clipped If the signal level ever exceeds OdBFS the signal will be clipped and you will hear a pop or tick in the recording This is a very bad thing and clipping should be avoided at all costs There is enough headroom so that you can be conservative in this area and there is no need to push the input
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