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Sound Devices USBPre 2, User Manual And Technical Information

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Sound Devices USBPre 2 User Manual And Technical Information Download Page 21

USBPre 2 User Guide and Technical Information

20

Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.

Input 1 set to Mic (XLR)

Input 2 set to Loop

To PA

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.

LEFT

RIGHT

Power amplifier input

Monitors

Power amplifier

Summary of Contents for USBPre 2

Page 1: ...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 ...

Page 2: ...ta 10 Windows XP Sound Control Panel 11 ASIO Driver 12 ASIO Driver Installation 13 Linux Installation and Connection 14 Inputs 15 Input Source Selection 15 Microphone Inputs 15 Phantom Power 15 Low Cut Filter 15 Input Pad 15 Input Limiters 15 Line Inputs 15 Aux Inputs 16 Digital Inputs 16 Input 2 Loop Source 16 Outputs and Monitoring 16 Headphone Output 16 Main Outputs 17 Digital Outputs 17 Meteri...

Page 3: ...ements 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 stand...

Page 4: ...and booting up properly Check to see that the operating system has recognized the USBPre 2 and designated the USBPre 2 as the 2 default sound card See Installation and Connection Connect an audio source 3 See Inputs Connect headphones or other monitoring equipment 4 Powered Monitors Headphones Powered monitors with balanced analog inputs can also be attached to the XLR outputs on the back panel of...

Page 5: ...utton to change the meter 6 source to display input levels For analog input sources adjust the Input Gain Control corresponding to the input being recorded 7 Input Gain Controls do not affect digital input levels The meters will show the audio level of the input Launch an audio application on the computer Make certain that the USBPre 2 is selected as the input 8 and output device in the applicatio...

Page 6: ... indi cate current selection Headphone Mono Button and LED 9 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 10 Illuminates amber when limiting is oc curing Monit...

Page 7: ...dphones to dangerously loud levels take caution when setting the headphone level AUX Output 5 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 6 Coaxial digital input and output connec tors Input is selected via the front panel input selection switch USB Port 7 USB B type connector for i...

Page 8: ...2 Determines level of balanced XLR outputs Up position Line level 0 dBu 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 automatical...

Page 9: ...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 Follow 1 Applications Utilities Audio MIDI Setup to open the Audio MIDI Setup dialog OS X 10 6 and later Highlight the USBPre 2 item click the button with the gear icon and select 2 Use this device for sound output Click the button with th...

Page 10: ...dio 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 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 tha...

Page 11: ...en 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 Click the 5 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 Follow 1 Start Control Panel Sound Click the 2 Playback tab Hi...

Page 12: ...th and sample rate from the dropdown menu Windows XP Sound Control Panel Follow 1 Start Control Panel The control panel view will be be in either Classic view or Category view If category view is enabled click 2 Sounds Speech and Audio Devices then click Sounds and Audio De vices Skip to step number 4 ...

Page 13: ... Sound play back section Select the USBPre 2 from the Default device dropdown menu in the Sound recording section 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 ...

Page 14: ...he System section of this window Proceed to http www sounddevices download usbpre2 asio htm and download the appropriate 6 driver based on your system type Plug the USBPre 2 into the computer with a USB cable 7 Locate the downloaded file and double click it to run the installer program 8 The welcome window will appear Click 9 OK The WinZip self extractor window will appear Click 10 Setup When the ...

Page 15: ...SBPre 2 16 Uninstalling ASIO Driver Open the 1 Programs and Features section Windows 7 and Vista or Add Remove Programs Windows XP in the Control Panel located in the Start menu Locate the item in the list that is titled 2 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 complet...

Page 16: ...e controllers section Right click the entry in this section titled 7 USBPre 2 0 Audio 1 0 0 and select Uninstall Ensure that the checkbox titled 8 Delete the driver software for this device is checked then click OK In the Device Manager expand the section titled 9 Universal Serial Bus controllers and repeat steps 7 and 8 on the entry in this section titled USBPre 2 0 Audio 1 0 0 ...

Page 17: ...on 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 wire...

Page 18: ...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...

Page 19: ...ttings 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 t...

Page 20: ...nd 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 T...

Page 21: ...To PA 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 LEFT RIGHT Power amplifier input Monitors Power amplifier...

Page 22: ...USBPre 2 User Guide and Technical Information 21 Block Diagram ...

Page 23: ...ping Level 1 THD PC controlled output levels at max Balanced XLR 18 dBu with 100k ohm load Aux 8 dBu 2 0 V rms with 100k ohm load Headphones 11 dBu 2 75 V rms with 600 ohm load Output Impedance Balanced XLR Line level 500 ohms Balanced XLR Mic level 5 ohms Aux 660 ohms S PDIF Digital 24 or 16 bit input A D Converter 24 bit resolution 114 dB typical dynamic range 22 Hz 22 kHz bandwidth A weight ed ...

Page 24: ...NTAL OR CONSEQUENTIAL DAMAGES ARISING FROM ANY BREACH OF WARRANTY OR UNDER ANY OTHER LEGAL THEORY Because some jurisdictions 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 R...

Page 25: ...7 Magnetic emissions at 1 meter 50 Hz 50 kHz EN55103 2 Phenomena 3 1997 Magnetic immunity 50 Hz to 10 kHz EN61000 4 2 2001 IEC61000 4 2 2001 ESD 4 kV contact 8 kV air discharge EN61000 4 3 2001 IEC1000 4 3 2001 Radiated RF immunity 10 V m 80 1 kHz amplitude modula tion EN61000 4 4 2001 IEC61000 4 4 2001 AC power ports EFT Burst I O lines 0 25 kV to 1 0 kV power line 0 5 kB 1 kV EN61000 4 4 2001 IE...

Page 26: ...USBPre 2 User Guide and Technical Information 25 ...

Page 27: ...USBPre 2 Rev 1 0b Printed in the U S A ...

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