Sound Devices USBPre 2 - User Guide and Technical
Contents
1. ASIO Driver The ASIO driver for the USBPre 2 allows for low latency operation and sample rates up to 192 KHz on Windows computers The ASIO drivers include a WDM counterpart so applications that use standard WDM for playback and recording will still operate as normal after installation After instal lation the USBPre 2 will be available as an ASIO device in applications that utilize ASIO 12 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information ASIO Driver Installation a 10 11 12 Determine if your version of Windows is 32 or 64 bit by viewing the System information window This window can be accessed by right clicking Computer located in the Start Menu or on the Desktop and selecting Properties It can also be accessed by the shortcut Windows Key PauselBreak key The oper ating system type will be listed in the System section of this window jE in O L J Janel All Control Panel Items System Search Control Panel pl 7 View basic information about your computer Windows edition Windows 7 Professional Copyright 2009 Microsoft Corporation All rights reserved J Service Pack 1 System Rating 59 Windows Experience Index Processor Intel R Core TM 2 Quad CPU Q6600 240GHz 2 39 GHz 3 00 GB 64 bit Operating System lo Pen or Touch Input is available for this Display Installed mem2. SOUNDSDEVICES OUTPUT a 1 OdB e 15gb J 2 4aV PH PC USBPre 2 User Guide and Technical Information Sound Devices LLC 300 Wengel Drive Reedsburg WI USA 1 608 524 0625 fax 1 608 524 0655 Toll Free 800 505 0625 www sounddevices com support sounddevices com Table of Contents Table of Contents 00 cece eee eee 7 Computer System Requirements 2 Quick Start Guide 00 c cece e cece 3 Sound Card CONECO 66s crrns rrari Err Eere 3 Front Panel Descriptions 0cceeeeees 5 Input and Output Panel Descriptions 6 Back Panel Descriptions 00cceeeeees 6 DIP Switch OptionS 0c cece eee ees 7 Mac OS Installation and Connection 8 OS X Audio MIDI Setup 0 00 cece eee 8 Adjusting Sample Rate in OS X 00 8 Windows Installation and Connection 9 Windows 7 and Vista Sound Control Panel 9 Adjusting Sample Rate in Windows 7 and Vista 10 Windows XP Sound Control Panel 005 11 ASIO Driver 5 c00inci new enenvaeweaeaeaswea es 12 ASIO Driver Installation 0 0 0 c eee ee eee 13 Linux Installation and Connection 5 14 OPUS s nicbaresecetivasaici sees eda aio nee 15 INPUT Source Select N sss rerrssscrnrrisistvresdds AS Microphone IMPUS 2 2 0 need ue od axed eeebehane Seen Ao PhaAMOM FOWE eaei ra seeen ec ee neues c
3. See Installation and Connection USBPre 2 User Guide and Technical Information Mac OS Installation and Connection Before connecting the USBPre 2 quit all open applications that use audio An application that is running when the USBPre 2 is connected may not recognize the USBPre 2 until the application is restarted When connecting the USBPre 2 to a computer with OS X 10 5 or earlier installed hold down the Input 1 Source Select button while pluggin in the USBPre 2 This will cause the USBPre 2 to initialize in USB Fullspeed mode which is required for OS X 10 5 and earlier Screen shots show Mac OS 10 6 OS X Audio MIDI Setup 1 Follow Applications gt Utilities gt Audio MIDI Setup to open the Audio MIDI Setup dialog ANO Audio Devices Built in Input USEPrez E lt in Oout Clock source Default z D w Built in Output USEPTe Source Default Format 44100 0 Hz il 2ch 16bit B Ch Volume Value dB Mute M G La amp 7 De aera Configure Speakers Configure device A l Configure speakers amp Use this device for sound input 4 Use this device for sound output E Play alerts and sound effects through this device 2 OSX 10 6 and later Highlight the USBPre 2 item click the button with the gear icon and select Use this device for sound output Click the button with the gear icon again and select Use this device for sound input OS X 10 5 and earlier Ensur
4. source audio PRE and computer audio PC Listening to PRE audio allows zero latency monitoring of analog input sources The center position mixes monitoring of both source and computer audio The signal at the AUX Output and balanced XLR Output is unaffected by this control NOTE S PDIF digital in puts cannot be monitored in the headphones S PDIF signal can only be monitored after being processed by the computer 12 Output Gain Control Small Knob Adjusts gain of AUX Output and bal anced XLR output Can be configured to adjust headphone gain See DIP Switch Options 13 Headphone Volume Control Big Knob Adjusts headphone gain Can be con figured to adjust XLR and AUX output levels See DIP Switch Options SOUND DEVICES USBPre 2 User Guide and Technical Information USBPre 2 User Guide and Technical Information Input and Output Panel Descriptions 2 3 4 MIC 1 MIC 2 AUX IN LINE IN Mic Inputs 5 Active balanced XLR inputs accept low impedance microphone level signals Line Inputs Accepts balanced line level signals AUX Inputs Accepts consumer level inputs such as CD Players Camcorders Portable DVD Players and Mini jack from computers via RCA connectors 7 6 Headphone Outputs 3 5 mm and 14 inch TRS stereo heaphone outputs can drive low impedance head phones NOTE The USBPre can drive headphones to dangerously loud levels take caution wh
5. Configure Set Default hd Properties 10 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information 3 Click the Advanced tab Select the desired bit depth and sample rate from the dropdown menu Default Format Select the sample rate and bit depth to be used when running in shared mode 24 bit 48000 Hz Studio Quality Exclusive Mode Allow applications to take exclusive control of this device Give exclusive mode applications priority Restore Defaults Windows XP Sound Control Panel 1 Follow Start gt Control Panel The control panel view will be be in either Classic view or Category view 2 If category view is enabled click Sounds Speech and Audio Devices then click Sounds and Audio De vices Skip to step number 4 E Control Panel File Edit view Favorites Tools Help am Back T po Search i Folders FRA Address G Control Panel Ed a Control Panel g Switch to Classic view a i OF ERE Printers and Other Hardware kii See Also Windows Update Help and Support Other Control Panel Options Network and Internet 3 User Accounts Connections P we Add or Remove Programs Sounds Speech and Audio Devices Performance and Maintenance Date Time Language and Regional Options Accessibility Options Security C
6. Down position Mic level 40 dBu See Outputs and Monitoring HP Mono Function 3 Adjusts what signals are summed when HP MONO is active Up position Input signals only Down position Input signals and output audio from the computer See Ouputs and Moni toring Meter PRE PC 4 Adjusts whether or not the meter source switches automatically to PC metering when computer audio is present Up position Auto matic Down position Manual See Ouputs and Monitoring HP Output Knob 5 Adjusts which knob controls headphone gain and which knob controls main output gain Up position Big Knob controls headphone gain and Small Knob controls main output gain Down position Big Knob controls main output gain and Small Knob controls headphone gain Headphone Signal to Outputs 6 Up position Only computer audio is sent to outputs Down position Main analog output source is the same as headphone signal source and affected by Monitor Mix Control Note In Stand alone mode input signal is always routed to the outputs and this setting has no effect Input Select Lock 7 Up position Input Select Buttons function nor mally Down position Input Select Buttons are disabled and input source selection is locked Stand Alone Sample Rate 8 9 and 10 Sets the operating sample rate when in Stand Alone mode according to the associated diagram See Stand Alone mode In Soundcard Mode sample rate is determined by the com puter
7. EN61000 4 5 2001 IEC61000 4 5 2001 EN61000 4 6 2001 IEC61000 4 6 2001 IEC61000 4 11 2001 EMC product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 1 Emissions EMC product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 2 Immunity Magnetic emissions at 1 meter 50 Hz 50 kHz Magnetic immunity 50 Hz to 10 kHz ESD 4 kV contact 8 kV air discharge Radiated RF immunity 10 V m 80 1 kHz amplitude modula tion AC power ports EFT Burst I O lines 0 25 kV to 1 0 kV power line 0 5 kB 1 kV EFT Burst I O lines 0 25 kV to 1 0 kV power line 0 5 kB 1 kV Surge 1 kV differential mode line to line 2 kV common mode line to ground Conducted RF immunity 3 V 80 1 kHz amplitude modulation Voltage dips and short interruptions at test voltage level 0 V unominal 70 V unominal 25 period Tested by L S Compliance Inc Cedarburg Wisconsin July 14 2010 MW AA Matthew Anderson Director of Engineering Sound Devices LLC 24 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information SOUNDSDEVICES SOUNDSDEVICES
8. 192 kHz e 48 V through 6 8k ohm resistors Each mic input will supply 10 mA e USB bus powered 5 V 10 500 mA max current from USB port USBPre 2 will not function if connected through a passive USB connection or hub e 4 3 cm x 18cm x 10 cm H x W x D e 1 7 in x 7 25 in x 4 25 in H x W x D e 0 5kg e 1 13 Ibs e Meets FCC Part 15 Class B e Complies with the Requirements of European Directive 89 336 EEC e USB Cable e Rubber Feet 22 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information Warranty and Technical Support Warranty amp Service Sound Devices LLC warrants the USBPre 2 against defects in materials and workmanship for a period of ONE 1 year from date of original retail purchase This is a non transferable warranty that extends only to the original purchaser Sound Devices LLC will repair or replace the product at its discretion at no charge Warranty claims due to severe service conditions will be addressed on an in dividual basis THE WARRANTY AND REMEDIES SET FORTH ABOVE ARE EXCLUSIVE SOUND DEVICES LLC DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SOUND DEVICES LLC IS NOT RESPONSIBLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM ANY BREACH OF WARRANTY OR UNDER ANY OTHER LEGAL THEORY Because some jurisdiction
9. B Intel R 828016 ICH Family USB2 Enhanced Host Controller 27CC USB Composite Device USB Composite Device USB Composite Device USB Root Hub USB Root Hub USB Root Hub USB Root Hub 7 Right click the entry in this section titled USBPre 2 0 Audio 1 0 0 and select Uninstall 8 Ensure that the checkbox titled Delete the driver software for this device is checked then click OK USBPre 2 0 Audio 1 0 0 e Waming You are about to uninstall this device from your system Delete the driver software for this device 9 Inthe Device Manager expand the section titled Universal Serial Bus controllers and repeat steps 7 and 8 on the entry in this section titled USBPre 2 0 Audio 1 0 0 SOUNDSDEVICES USBPre 2 User Guide and Technical Information Linux Installation and Connection The USBPre 2 is an Audio Device Class USB standard peripheral No proprietary drivers are re quired to operate the USBPre 2 under Linux The first time the USBPre 2 is plugged in Linux will enable standard USB Audio Device Class drivers automatically if necesarry Current Linux audio drivers only support USB audio devices at Full speed USB rates The USBPre 2 must be forced into Full Speed mode by holding down the Input 1 Source button when plugging in the USB cable to the USBPre 2 Before connecting the USBPre 2 quit all open applications that use audio An application that is running when the USBPre 2 is connected m
10. a O O l l l l l l l l l l l l l l l l 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 l l l l l l l l l l l l l l l l E E E E E E k E tr v g J g 5 t t 48k o 6 6 6 6 6 6 6 o lt 5 z z 6 a ae 10K I l 6 lt oe a t 176 4K Q N l QO t t t 96K O O x e a O T O 4 t t 88 2K wW U n O a gt e t 441K gt O O Lu O Lu m O O 4 32K Soo O O 2 2 6 6 O c amp o o w e a a a W a Z amp O X we ay ik A 1 A 1 A 1 1 53 y fis O gt lt N OV90OR0Q0000 RF 00 TEOT r 2 gt gt 2 2 222d 2 aI mI Z A Setti 48 Volt Phantom Power 9 and 10 Up position engages 48 Volt phantom power on balanced microphone inputs Required for condenser microphones See Inputs Section Low Cut Filter 7 and 8 Up position engages low cut filter on balanced microphone inputs 3 dB at 80 Hz 12 dB per octave See Inputs Section Limiter 5 and 6 Up position engages limiters on balanced microphone inputs Attenuates signal above 4 dBES See Inputs Section 15 dB Pad 3 and 4 Up position reduces gain by 15 dB on balanced microphone inputs Useful for sensitive mi crophones or very loud program material See Inputs Section e Dual Mono 1 Up position disables input 2 and routes input 1 signal to both tracks SOUNDSDEVICES B Settings Balanced Output Level 1 and 2 Determines level of balanced XLR outputs Up position Line level 0 dBu
11. at full counter clockwise setting Gain control only affects analog input sources Low Cut LED lluminates when low cut filter is engaged on either mic input See DIP Switch Options 15 dB pad LED Illuminates when 15 dB pad is engaged on either mic input See DIP Switch Op tions A8V Phantom Power LED lluminates when phantom power is engaged on either mic input See DIP Switch Options Input 1 Split LED lluminates when Input 1 Split is active See DIP Switch Options Input Select Buttons and Input Source LEDs Selects between the available input types Input Source LED to the right will illuminate to indicate which source is currently active Meter 23 segment LED meter Calibrated in dBFS with peak VU ballistics Meter Source Button Switches meter source between input or output signal LED illuminates to indi cate current selection 00006 Bie a Id 8 4 O 6 en DY f FO PRE i i B pe METER Q E MONO PRE a leaders Mono Mi aan LED Toggles between mono and stereo moni toring of analog input audio in head phones especially useful when multi track recording and recording from one input LED illuminates when Mono is active This function can be configured to affect PC Audio as well See DIP Switch Options Limiter LEDs luminates amber when limiting is oc curing 10 Ner 11 Monitor Mix Control Selects the signal source to be monitored in the headphones between analog
12. ay not recognize the USBPre 2 until the application is restarted Inputs Input Source Selection The USBPre 2 has two available input channels The source for each input is independently selected using the Input Select Buttons on the front panel The selected source is indicated by an illuminated LED next to the respective Input Select Button The Input Select Buttons can be locked to prevent ac cidental switching of the input sources See DIP Switch Options Microphone Inputs Phantom Power The USBPre 2 provides 48 volt phantom power for condenser microphones connected to the XLR inputs Phantom power can be engaged independently for each input See DIP Switch Options Con denser microphones that can operate on phantom voltages from 11 52 volts will function properly with 48 volt phantom Dynamic microphones typically do not require phantom power A properly connected balanced dynamic microphone is not affected by the presence of phantom power nor will it draw any current However it is good practice to turn phantom power off when not needed Poor or incorrectly wired microphone cable can cause audible artifacts in microphone signals Some wireless receivers outputs are adversely affected by the presence of phantom power therefore consult the wireless receiver documentation Low Cut Filter The low cut filter attenuates low frequency signals This is useful in conditions where low frequency signal is causing overload before the de
13. e that the USBPre 2 is selected for both the Default Input dropdown menu and the Default Output dropdown menu in the System Settings section Adjusting Sample Rate in OS X 1 Follow Applications gt Utilities gt Audio MIDI Setup to open the Audio MIDI Setup dialog 8 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information UANO Audio Devices Built in Input USBPre2 AB a Clock source Default amp Built in Output li j it j USBPrez Source Default Format 44100 0 Hz il 2ch 16bit B Ch Volume Value dE Mute M G La amp 2 0O E Configure Speakers Configure device Configure speakers Use this device for sound input 4 Use this device for sound output EJ Play alerts and sound effects through this device 2 OSX 10 6 and later Highlight the USBPre 2 item and adjust the sample rate and bit depth from the drop down box labeled Format OS X 10 5 and earlier Select the USBPre 2 from the Properties For dropdown menu then set the sample rate channel count and bit depth as desired from the dropdown menus in the Audio Input section and the Audio Output section Windows Installation and Connection The USBPre 2 is an Audio Device Class USB standard peripheral No proprietary drivers are re quired to operate the USBPre 2 under Windows The first time the USBPre 2 is
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15. en setting the headphone level Back Panel Descriptions O L S PDIF OUT AUX Output Audio output to feed powered loud speakers CD Recorders Camcorders or Portable DVD Recorders RCA connec tors Computer audio only S PDIF Coaxial Input and Output Coaxial digital input and output connec tors Input is selected via the front panel input selection switch USB Port USB B type connector for interconnec tion with the computer provides all data and power to the USBPre 2 via USB bus powering USB 1 1 and 2 0 compli ant 1 2 Balanced XLR Outputs 3 Active balanced analog outputs Mic Line switchable See DIP Switch Options S PDIF Optical Input and Output Optical digital TOSLINK input and output connectors DIP Switches DIP Switches to configure various as pects of the USBPre 2 6 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information DIP Switch Options The DIP switches on the back panel of the USBPre 2 can control various features To adjust an indi vidual switch carefully move the switch with a slender tool In the following descriptions Up refers to the direction opposite the numbering on the switch casings A SETTINGS B SETTINGS y E u w 553 2 Z ZO2E 2 2S 2 2eesee2 2 z zZz 2225 F lt E B232 O O O O O O O 3 3 20 amp
16. enter SOUNDSDEVICES USBPre 2 User Guide and Technical Information 3 If classic view is enabled click Sounds and Audio Devices E Control Panel igj x File Edit wiew Favorites Tools Help ae Ly Back a wi po Search T Folders Hat Address Control Panel hi Go os Vig Control Panel a Same Intel R GMA Internet Keyboard Mouse G Switch to Category View Controllers Driver for Options D SG Q ae Aira E P See Also Ea Metwork Phone and Power Options Printers and QuickTime T Windows Update Connections Modem Faxes Help and Support jon es BoF as gt Regional and Scanners and Scheduled Security SigmaTel Language Cameras Tasks Center Audio m 2 0O P Ee j Sounds and Speech Startup Disk Symantec System Audio Devices LiveUpdate 4 Click the Audio tab Select the USBPre 2 from the Default device dropdown menu in the Sound play back section Select the USBPre 2 from the Default device dropdown menu in the Sound recording section Sounds and Audio Devices Properties yg ajx Volume Sounds Audio Voice Hardware Sound playback Default device USEPre2 Volume Advanced Sound recording A Default device USBPrez se Volume Advanced MIDI muzic playback Pas Default device reve Microsoft G5 Wavetable SW Synth Volume About Use only default devices cot __
17. gnal to the head phones The Headphone Volume Control knob and the Output Gain Control knob can be swapped with the back panel DIP Switches See DIP Switch Options Caution The USBPre 2 is capable of driving headphones to dangerously high levels Be aware of head phone level controls at all times Use the Monitor Mix Control on the front panel to adjust the mix between direct audio from the in puts fully counter clockwise and output audio from the computer fully clockwise The signal for input audio is derived from the inputs before analog to digital conversion SOUNDS DEVICES USBPre 2 User Guide and Technical Information Headphone Mono mode sums the input signals from both inputs into a mono mix for the head phones To toggle Headphone Mono mode push the Headphone Mono button on the front panel The Headphone Mono LED will illuminate when Headphone Mono mode is active Optionally the stereo signal from the computer can also be summed when Headphone Mono mode is engaged See DIP Switch Options Main Outputs Signal level at the balanced XLR outputs and unbalanced AUX outputs is adjusted with the Output Gain Control The signal source for the outputs is the output audio from the computer This source can be changed to the same source as the headphone output with the back panel DIP Switches The balanced XLR outputs are set to line level by default and can be set to mic level with the back panel DIP switches See DIP Switch Option
18. he USBPre 2 as the default sound card See Installation and Connection 3 Connect an audio source See Inputs 4 Powered monitors with balanced analog inputs can also be attached to the XLR outputs on the back panel of the USBPre 2 5 Press the Input Select button repeatedly until the proper Input Source LED is illuminated for the input you will be recording SOUNDSDEVICES a USBPre 2 User Guide and Technical Information N Input 1 set to Mic XLR gt 1 O O000 a pe S Input 2 set to Line 1 4 TRS gt 2 OKO 00 6 If the PRE Meter Source LED is not illuminated press the Meter Source button to change the meter source to display input levels 7 For analog input sources adjust the Input Gain Control corresponding to the input being recorded Input Gain Controls do not affect digital input levels The meters will show the audio level of the input 8 Launch an audio application on the computer Make certain that the USBPre 2 is selected as the input and output device in the application s preferences Consult the applications documentation for further information a Features and specifications are subject to change Visit www sounddevices com for the latest documentation Front Panel Descriptions al I r 1 2 3 4 5 6 7 8 8 pf dt BUFTEA 48V PH O Input Gain el Adjusts input gain Gain is minimized not turned off
19. input is designed for signal from CD players camcorders portable DVD players and other similar devices Signal output from turntables without built in phono preamplifiers is too weak for the USBPre 2 s Aux Inputs A separate phono preamplifier may be required depending on the design of the turntable Digital Inputs Digital signal in the S PDIF format can be input to either the coaxial RCA connector or the optical TOSLINK connector If signal is present at both the optical and coaxial input the signal from the optical input takes precedence Sample rates below 32 kHz are not supported on the digital connections The optical connections do not support the 192 kHz sampling rate Input 2 Loop Source Input 2 has an additional source labeled LOOP This input source does not correspond to any physi cal connections on the USBPre 2 When LOOP is selected input 2 s source is derived from the left channel of the computer audio signal post digital to analog conversion The input 2 Gain Control affects signal The Output Gain Control does not affect the level of the signal going in to input 2 The LOOP source is useful for test and measurement applications where a reference signal is re quired to be routed back to an input Outputs and Monitoring Headphone Output The USBPre 2 has a high current headphone amplifier for monitoring analog input audio computer audio or a mix of both The Headphone Volume Control adjusts the level of the si
20. ions Sample Rate In Stand alone mode the sample clock is generated by the USBPre 2 s internal sample clock genera tor and the Sample rate is set by adjusting the DIP switches on the back panel of the USBPre 2 See DIP Switch Options This will affect the internal sample rate of the USBPre 2 as well as the sample rate output from the digital outputs Sample rates below 32 kHz are not supported on the coaxial or optical TOSLINK digital interconnec tions 192 kHz sampling rate is not supported on the TOSLINK interconnections In Interface mode the USBPre 2 operates at the sample rate set from the host operating system and the DIP switches related to sample rate are ignored It is further possible to change the sampling rate of the USBPre 2 within some applications audio preferences In Windows XP there is no global sample setting and the sample rate must be set by the application in use Locking Sample Rate to External Sources The sample rate of the USBPre 2 can be locked to the sample rate of an external S PDIF signal When a digital signal is connected to either the coaxial or optical input the S PDIF Input Source LED will illuminate to indicate that the USBPre 2 is locked to the sample rate of the incoming digital signal The S PDIF Input Source LED s will flash for 30 seconds when the signal is removed or turned off To make a digital recording with the computer at a locked sample rate be certain that the incoming digital sig
21. is mode the top row of the meter displays the level for the selected input source on channel one and the bottom row displays the level for the selected input source on channel 2 The meter source switches from PRE to PC automatically when signal is output from the computer This behavior can be defeated so that the source is switched manually See DIP Switch Options Stand Alone Mode In Stand Alone mode the USBPre 2 operates as a microphone preamplifier with both digital and analog outputs It can also accept digital signals and output analog audio The USBPre 2 will auto matically enter stand alone mode when connected to a USB jack supplying USB power 5V 500 mA max but is not associated with a running operating system For example a powered USB hub that is 18 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information not attached to a computer The USBPre 2 can be forced into Stand alone mode when connected to a computer supplying USB power by holding down the Meter Source button when attaching the USB cable In Stand Alone mode all front panel controls perform the same functions as when the USBPre 2 is in Interface mode except that the Meter Source button is disabled and the meter mode is locked to PRE Since there is no reference clock from the computer the operating sample rate is set using the back panel DIP Switches See DIP Switch Opt
22. n to 6 dBFS e 0 009 max AUX output 0 dB V output 100k ohm load 0 05 max HEADPHONES output 2 V rms output 600 ohm load e 127 dBu min 22 Hz 22 kHz bandwidth 150 ohm source gain control fully clock wise 15 dB pad out e Mic 10 dBu 0 25 V RMS e Mic 15 dB pad 4 dBu 0 78 V RMS e Mic 10 dBu min 60 dBu max e Mic 15 dB pad 4 dBu min 45 dBu max e Line 28 dBu 19 45 V rms e Aux 9 dBu 2 18 V rms e Line 29 dBu min 10 dBu max e Aux 12 dBu min 7 dBu max e Line 60k ohm active balanced e Aux 80k ohm e Mic 4k ohm active balanced e Mic 4 dBFS e Mic 3 dB at 80 Hz 12 dB per octave e Balanced XLR 18 dBu with 100k ohm Headphones 11 dBu 2 75 V rms with load 600 ohm load e Aux 8 dBu 2 0 V rms with 100k ohm load e Balanced XLR Line level 500 ohms e Balanced XLR Mic level 5 ohms e 24 or 16 bit input e 24 bit resolution 114 dB typical dynamic range 22 Hz 22 kHz bandwidth A weight ed e Aux 660 ohms e 24 bit resolution 112 dB typical dynamic range 22 Hz 22 kHz bandwidth A weight ed e Mic 80 dB max e Mic 15 dB pad 65 dB max e Recording 8 16 or 24 bit at 8 16 32 44 1 48 96 or 192 kHz e Crystal based low jitter e 2 x 23 segments 44 dB total range peak ballistics 0 dB on meter 0 dBFS 0 dB referenced to full scale digital e Line 30 dB max e Aux 13 dB max e Playback 24 bit at 8 16 32 44 1 48 96 or
23. nal is valid solid S PDIF Input Source LED s and that the software driver is set to the same sample rate as that of the incoming digital signal See Installation and Connection section for your operating system If the USBPre 2 senses a discrepency in the incoming digital signal such as a clocking error the Meter Source LED s will flash until the Meter Source button is pushed Setup Examples Test and Measurement The high quality preamplifiers and portability of the USBPre 2 make it a perfect interface for test and measurement applications A requirement for measuring a transfer function is the ability to moni tor the output reference signal from the computer The LOOP source of input 2 enables a copy of the computer audio left channel to be internally routed to input 2 This allows reference signal to be sent back into the measurement application without additional cabling The USBPre 2 supports native sample rates below 44 1 kHz to provide better FFT resolution for low frequency audio measurements SOUNDSDEVICES USBPre 2 User Guide and Technical Information High Performance Playback The USBPre 2 can provide high quality audio output from a computer to reference monitors in a studio control room or a home stereo system Depending on the connectivity of the monitors the bal anced XLR outputs unbalanced RCA outputs or digital S PDIF outputs can be used to send com puter audio to the monitors Monit
24. nd Features section Windows 7 and Vista or Add Remove Programs Windows XP in the Control Panel located in the Start menu 2 Locate the item in the list that is titled USBPre 2 0 USB ASIO Driver highlight it then click Uninstall This is all that is required to uninstall the driver from Windows XP and Vista Further steps are required to completely remove the driver from Windows 7 The following steps are for Windows 7 only 3 Restart the computer 4 Right click Computer located in the Start Menu or on the Desktop and select Properties 4 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information 5 On the left sidebar of the System window click Device Manager to open the Device Manager window View basic information ak Device Manager Windows edition Remote settings Windows 7 Professional W System protection Copyright 2009 Microsoft Advanced system settings Service Pack 1 6 File Action View Help Microsoft LifeCam DefietionAudio Device USBPre 2 0 Audio 1 0 0 rE Universal Serial Bus controllers kn Generic USB Hub Intel R 828016 ICH Family USB Universal Host Controller 27C8 Intel R 828016 ICH Family USB Universal Host Controller 27C9 Intel R 828016 ICH Family USB Universal Host Controller 27CA Intel R 828016 ICH Family USE Universal Host Controller 27C
25. ors LEFT RIGHT Power amplifier input Power amplifier ED Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information Block Diagram ceeeeeeenees Interface mode Stand Alone mode Digital Mic gt Line m A D B Converter AUX tap To PC l ores From PC LOOP 7 CH2 Only CH1 Left signal D A Headphone Monitor Converter Output Mix Knob Mono Stereo Q AUX Main L DIP B6 DIP B3 XO Output 4 Digital Output SOUNDSDEVICES Specifications Frequency Response reference 1 kHz tone 192 kHz sample rate THD N 22 Hz 22 kHz measurement band width E I N MIC inputs Input Clipping Level 1 THD Input Sensitivity typical for 0 dBFS Input Impedance actual Input Limiter Threshold Low Cut Output Clipping Level 1 THD PC controlled output levels at max Output Impedance S PDIF Digital A D Converter D A Converter Analog Gain Sample Rates Bit Depths Master Clock Metering Phantom Power Powering Dimensions unpackaged Weight Certifications Included Accessories USBPre 2 User Guide and Technical Information Any input to PC recording PC source to AUX or XLR output e 10 Hz 40 kHz 0 5 dB e 10 Hz 40 kHz 0 5 dB e 3 dB at 65 kHz e 3 dB at 65 kHz e 0 05 max any input to PC recording gain control at min input drive
26. ory Pen and Touch Computer name domain and workgroup settings Re see eee ee ar ee Proceed to http www sounddevices download usbpre2 asio htm and download the appropriate driver based on your system type Plug the USBPre 2 into the computer with a USB cable Locate the downloaded file and double click it to run the installer program The welcome window will appear Click OK The WinZip self extractor window will appear Click Setup When the extractor is completed the language selection window will appear Select your prefered lan guage and click OK A window will appear offering the uption to install uninstall or exit Click Install the Driver Install the driver a eas g f T Uninstall the driwer Exit SOUND DEVICES USBPre 2 User Guide and Technical Information 13 The installation process will begin If the USBre 2 is not plugged in the installer will request that you do SO SPHF OUT O0 oO O 00o J ALA OUT SPENE IN Please plug your USBPre now to the computer If it s not already connected This might take a while In order to complete the installation press lt Exilt gt below disconnect then reconnect the USBPre2 15 Unplug the USB cable from the USBPre 2 16 Plug the USB cable back in to the USBPre 2 Uninstalling ASIO Driver 1 Open the Programs a
27. photocopying recording or otherwise without the expressed written permission of SOUND DEVICES LLC SOUND DEVICES is not responsible for any use of this information SOUND DEVICES LLC shall not be liable to the purchaser of this product or third parties for damages losses costs or expenses incurred by purchaser or third parties as a result of accident misuse or abuse of this product or unauthorized modifications repairs or alterations to this product or failure to strictly comply with SOUND DEVICES LLC s operating and installation instructions Microsoft Windows is a registered trademark of Microsoft Corporation Macintosh is a registered trademark of Apple Inc Other product and company names mentioned herein may be the trademarks of their respective owners The sound waves logo is a registered trademark of Sound Devices LLC Computer System Requirements The requirements below outline the minimum configurations for systems using the USBPre 2 Soft ware applications used with the USBPre 2 have their own requirements that may be in addition to the requirements of the USBPre 2 Consult your software s documentation Operating Systems Windows XP SP3 Windows Vista Windows 7 both 32 and 64 bit Macintosh OS 10 4 or greater Linux Kernel 2 6 0 or greater Requires standard ALSA snd usb audio module USB Audio Device Class Windows Linux and Mac OS versions below 10 5 8 utilize USB Audio Device Class 1 0 drivers that will limi
28. plugged in Windows will install standard USB Audio Device Class drivers automatically Before connecting the USBPre 2 quit all open applications that use audio An application that is running when the USBPre 2 is connected may not recognize the USBPre 2 until the application is restarted Windows 7 and Vista Sound Control Panel 1 Follow Start gt Control Panel gt Sound SOUNDSDEVICES USBPre 2 User Guide and Technical Information Speakers High Definition Audio Device Ready Digital Audio S PDIF High Definition Audio Device Ready Speakers a USBPrez YA Default Device Configure Set Default Properties 2 Click the Playback tab 3 Click to select the item labeled USBPre2 in the list of devices 4 Click the Set Default button A green check mark icon will appear next the the USBPre 2 entry and the phrase Default Device will appear below the entry indicating that the USBPre 2 is now the default playback device 5 Click the Recording tab and repeat and repeat steps 3 and 4 to make the USBPre 2 the default recording device Adjusting Sample Rate in Windows 7 and Vista 1 Follow Start gt Control Panel gt Sound 2 Click the Playback tab Highlight Single click the entry labeled USBPre2 and then Click the Proper ties button Speakers High Definition Audio Device Ready Digital Audio 5 PDIF High Definition Audio Device Ready Speakers USBPre2 JA Default Device
29. s The Windows Volume Control controlled with the speaker icon in the system tray and the Mac volume control affect the level of the computer s output audio before it reaches the USBPre It is gener ally best practice to set the volume control to 100 and make adjustments to the output level with the USBPre 2 s Output Gain Control Digital Outputs When the USBPre 2 is used as a computer audio interface the sample rate of the digital outputs Coaxial S PDIF and optical TOSLINK is determined by the application settings on the computer In Stand alone mode the sample rate is determined by the position of the back panel DIP switches Optical TOSLINK outputs are inoperable at 192 kHz sample rate Metering The USBPre 2 features a 23 segment 2 channel LED meter The meter displays both the peak level of source audio and average VU levels simultaneously 0 dB on the meter is calibrated to 0 dBFS signal coming from the computer The current source signal for the meter is indicated by an illuminated LED next the Meter Source Button The meter source can be toggled by pushing the Meter Source Button When the meter source is set to PC the meter displays the audio level for signal coming from the computer In this mode the top row of the meter displays the left channel level and the bottom row displays the right channel level When the meter source is set to PRE the meter displays the audio level for signal at the active inputs In th
30. s do not permit the exclusion or limitations set forth above they may not apply in all cases For all service including warranty repair please contact Sound Devices for an RMA return mer chandise authorization before sending your unit in for repair Product returned without an RMA number may experience delays in repair When sending a unit for repair please do not include accesso ries including carry cases cables or adapters unless instructed by Sound Devices Sound Devices LLC Service Repair RMA XXXXX 300 Wengel Drive Reedsburg WI 53959 USA telephone 608 524 0625 Technical Support Bug Reports For technical support and bug reporting on all Sound Devices products contact Sound Devices LLC E mail support sounddevices com web www sounddevices com support Telephone 1 608 524 0625 Toll Free in the U S A 800 505 0625 Fax 1 608 524 0655 SOUNDSDEVICES USBPre 2 User Guide and Technical Information CE Declaration of Conformity According to ISO IEC Guide 22 Sound Devices LLC 300 Wengel Drive Reedsburg WI 53959 USA declares that the product USBPre 2 Portable Computer Audio Interface is in conformity with and passes EN55103 1 1997 EN55103 2 1997 EN55103 1 Phenomena 2 3 1997 EN55103 2 Phenomena 3 1997 EN61000 4 2 2001 IEC61000 4 2 2001 EN61000 4 3 2001 IEC1000 4 3 2001 EN61000 4 4 2001 IEC61000 4 4 2001 EN61000 4 4 2001 IEC61000 4 4 2001
31. sired gain is reached windy environments or handheld mi crophones for example Input Pad With some combinations of microphone sensitivity and sound pressure levels the microphone input of the USBPre 2 can become overloaded even when the input gain is at its lowest level A 15 dB pad can be engaged on the microphone input to reduce its sensitivity See DIP Switch Options Input Limiters In environments where high sound pressure levels may occur unexpectedly input limiting prevents distortion by attenuating signals that surpass the input threshold level In normal operation with properly set input levels the threshold of an input limiter is rarely reached Signals below the thresh old are not affected by the limiter Limiters can be engaged on each microphone input independently See DIP Switch Options The amber LIM LED s on the right side of the meters will illuminate to indi cate when limiting is occurring 16 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information Line Inputs The Line Inputs use balanced quarter inch connectors and accept 4 dBu analog signal sometimes referred to as Professional line level Wiring is tip signal ring signal and sleeve ground Aux Inputs The Aux Inputs use unbalanced RCA connectors and accept 10 dBu analog signal sometimes referred to as Consumer line level This
32. t the USBPre 2 to sampling rates of 48 kHz and lower Mac OS 10 5 8 and greater utilizes USB Audio Device Class 2 0 drivers that will allow the full range of sample rates that the USBPre 2 is capable of USB Connection Full USB 1 1 or 2 0 compliance For Notebook Computer users For proper operation of the USBPre turn off all power management when using the USBPre for audio recording Power management reduces processor speed system bus speed spins down hard disks shuts down displays or a combination of the above to reduce current consumption and extend battery run time The change in state from active to power saving mode can disrupt data on the USB bus and cause unintended dropouts Sound Devices cannot guarantee that a given computer can be used satisfactorily with the USBPre 2 based exclusively on the fact that it meets the above requirements 2 Features and specifications are subject to change Visit www sounddevices com for the latest documentation USBPre 2 User Guide and Technical Information Quick Start Guide Sound Card Connection 1 Attach the A plug of the supplied USB cable into an available A socket on the computer Attach the B plug of the USB cable into the B socket on the USBPre 2 The USBPre 2 s meter LED s will il luminate sequentially indicating the USBPre 2 is connected and booting up properly 2 Check to see that the operating system has recognized the USBPre 2 and designated t
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