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8pre USB
User’s Guide for Windows
1280 Massachusetts Avenue
Cambridge, MA 02138
Business voice: (617) 576-2760
Business fax: (617) 576-3609
Web site: www.motu.com
Tech support: www.motu.com/support
Seitenansicht 0
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Inhaltsverzeichnis

Seite 1 - 8pre USB

™ 8pre USB User’s Guide for Windows 1280 Massachusetts AvenueCambridge, MA 02138Business voice: (617) 576-2760Business fax: (617) 576-3609Web site: w

Seite 3 - Contents

CHAPTER 11 1 About the 8pre USB OVERVIEW The 8pre USB is and audio interface that can operate in two general modes: as a USB audio interface or as an

Seite 4

ABOUT THE 8PRE USB 12 One USB jack 16 inputs and 12 outputs When operating as a USB audio interface, all 8pre USB inputs and outputs can be used si

Seite 5 - Getting Started

ABOUT THE 8PRE USB 13 On-board SMPTE synchronization The 8pre USB can resolve directly to SMPTE time code via any analog input, without a separate s

Seite 6

ABOUT THE 8PRE USB 14 HOST AUDIO SOFTWARE The 8pre USB system ships with Windows drivers that allows you to record, edit, play back and mix your 8pre

Seite 7

CHAPTER 15 2 Packing List and System Requirements PACKING LIST The 8pre USB ships with the items listed below. If any of these items are not present

Seite 8 - 1 2 3 4 5

PACKING LIST AND SYSTEM REQUIREMENTS 16

Seite 9 - How to access these settings

CHAPTER 17 3 Installing the 8pre USB Software OVERVIEW Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seite 10

INSTALLING THE 8PRE USB SOFTWARE 18 MOTU AUDIO DRIVERSASIO ASIO is an acronym for Audio Streaming Input and Output . The MOTU Audio ASIO driver pro

Seite 11 - About the 8pre USB

CHAPTER194 Installing the 8pre USB HardwareOVERVIEWHere’s an overview for installing the 8pre USB:Connect the 8pre USB to your computer . . . . . . .

Seite 12 - Total 16 12

SAFETY PRECAUTIONS AND ELECTRICAL REQUIREMENTS CAUTION! READ THIS SAFETY GUIDE BEFORE YOU BEGIN INSTALLATION OR OPERATION. FAILURE TO COMPLY WITH SAF

Seite 13 - INCLUDED SOFTWARE

INSTALLING THE 8PRE USB HARDWARE20Main outsThe main outputs serve as independent outputs. The main out volume is controlled by the volume knob on the

Seite 14 - HOST AUDIO SOFTWARE

INSTALLING THE 8PRE USB HARDWARE21CONNECT MIDI GEARConnect your MIDI device’s MIDI IN jack to the 8pre USB’s MIDI OUT jack (Connection A below). Conv

Seite 15 - Packing List and

INSTALLING THE 8PRE USB HARDWARE22OPERATING THE 8PRE USB AS AN INTERFACEHere is a typical studio setup for using the 8pre USB as an audio interface. A

Seite 16

INSTALLING THE 8PRE USB HARDWARE23OPERATING THE 8PRE USB AS A CONVERTERAs explained earlier in “Using optical I/O to operate the 8pre USB as an 8-cha

Seite 17 - INSTALLATION

INSTALLING THE 8PRE USB HARDWARE24SYNCING OPTICAL DEVICESThe word optical is our short-hand way of referring to any device that connects to the 8pre U

Seite 18 - MOTU SMPTE CONSOLE

Part 2 Using the 8pre USB

Seite 20

CHAPTER275 MOTU Audio ConsoleOVERVIEWMOTU Audio Console gives you access to basic 8pre USB hardware settings, such as sample rate, clock source, optic

Seite 21 - CONNECT MIDI GEAR

MOTU AUDIO CONSOLE28‘GENERAL’ TAB SETTINGSSample RateChoose the desired Sample Rate for recording and playback. The 8pre USB can operate at 44.1 (the

Seite 22 - INTERFACE

MOTU AUDIO CONSOLE29 The delay you hear when routing a live signal through your host audio software plug-ins How responsive the transport controls

Seite 23 - CONVERTER

III Contents Part 1: Getting Started 7 Quick Reference: 8pre USB USB Front Panel 8 Quick Reference: 8pre USB USB Rear Panel 9 Quick Reference: MOTU

Seite 24 - SYNCING OPTICAL DEVICES

MOTU AUDIO CONSOLE30If the ADAT Optical setting does not appear in the menu, it means that the 8pre USB’s optical input is currently turned off. Choos

Seite 25 - Using the 8pre USB

CHAPTER316 Front Panel SettingsOVERVIEWThe VOLUME knob is a rotary encoder that can be pushed as well as turned. By pushing it repeatedly, or by pushi

Seite 26

FRONT PANEL SETTINGS32flashes, turn the knob to change the clock mode. Push it again to confirm the current clock setting exit clock mode.

Seite 27 - MOTU Audio Console

CHAPTER337 Configuring Host Audio SoftwareOVERVIEWThe 8pre USB provides multi-channel audio input and output for ASIO- and WDM-compatible audio applica

Seite 28 - ‘GENERAL’ TAB SETTINGS

CONFIGURING HOST AUDIO SOFTWARE34Sample rateChoose the desired overall sample rate for the 8pre USB system and your host audio software. Newly recorde

Seite 29 - MOTU AUDIO CONSOLE

CONFIGURING HOST AUDIO SOFTWARE35Pro ToolsIn Avid Pro Tools, go to the Setup menu and choose Playback Engine as shown in Figure 7-2. Choose the MOTU

Seite 30 - 8PRE USB TAB SETTINGS

CONFIGURING HOST AUDIO SOFTWARE36LiveIn Ableton Live, access the preferences window and click the Audio tab. Choose ASIO from the Driver Ty p e menu.

Seite 31 - Front Panel Settings

CONFIGURING HOST AUDIO SOFTWARE37Figure 7-7: Enabling the MOTU Audio ASIO driver in SONAR. 4 Next, in the Audio preferences section, choose Devices.5

Seite 32 - FRONT PANEL SETTINGS

CONFIGURING HOST AUDIO SOFTWARE38Figure 7-9: Make sure you have chosen a 8pre USB input and outputfor the playback and recording timing master setting

Seite 33 - RUN MOTU AUDIO CONSOLE

CONFIGURING HOST AUDIO SOFTWARE39matches its main outs. This can be used, for example, to record a final stereo mix for reference and archiving purpos

Seite 34

About the Mark of the Unicorn License Agreement and Limited Warranty on Software TO PERSONS WHO PURCHASE OR USE THIS PRODUCT: carefully read all the

Seite 35

CONFIGURING HOST AUDIO SOFTWARE40

Seite 36

CHAPTER418 Reducing Monitoring LatencyOVERVIEWWhen operating the 8pre USB as an audio interface, monitoring latency is that slight delay you hear when

Seite 37

REDUCING MONITORING LATENCY42MONITORING LIVE INPUTThere are two ways to monitor live audio input with an 8pre USB: 1) through the computer or 2) via C

Seite 38 - REDUCING LATENCY

REDUCING MONITORING LATENCY43ADJUSTING THE AUDIO I/O BUFFERA buffer is a small amount of computer memory used to hold data. For audio interfaces like

Seite 39 - SYNCHRONIZATION

REDUCING MONITORING LATENCY44Lower latency versus higher CPU overheadThe buffer setting has a large impact on the following things: Patch thru latenc

Seite 40

REDUCING MONITORING LATENCY45Using the CueMix FX appIf your host audio software does not support direct hardware monitoring, you can run the CueMix F

Seite 41 - Reducing Monitoring Latency

REDUCING MONITORING LATENCY46

Seite 42 - MONITORING LIVE INPUT

CHAPTER479 CueMix FXOVERVIEWWhen operating the 8pre as an audio interface, the 8pre’s CueMix FX software provides access to the flexible on-board mixin

Seite 43

CUEMIX FX48Many inputs to one output pairIt might be useful to think of each mix as some number of inputs all mixed down to a stereo output pair. CueM

Seite 44 - CUEMIX DSP

CUEMIX FX49Mix master faderThe master fader (Figure 9-1) controls the overall level of the mix (its volume on its stereo output). Use the individual

Seite 46 - REDUCING MONITORING LATENCY

CUEMIX FX50BalanceBalance works like the balance knob on some radios: turn it left and the right channel dims, turn it right and left channel dims. Bu

Seite 47 - CueMix FX

CUEMIX FX51Talkback / Listenback mic inputChoose the audio input to which your Talkback and/or Listenback mic is connected, as shown below:Figure 9-3

Seite 48 - WORKING WITH A MIX

CUEMIX FX52FILE MENUSaving and loading hardware presetsThe 8pre USB can store up to 16 presets in its on-board memory. A preset includes all CueMix FX

Seite 49 - CUEMIX FX

CUEMIX FX53Figure 9-5: Opening the signal analysis windows. Scope channelsThe Scope channel selection menus (Figure 9-1 on page 48) let you choose wh

Seite 50 - TALKBACK AND LISTENBACK

CUEMIX FX54SpectrogramClick the Show Spectrogram option (Figure 9-7) to superimpose a real-time spectrogram “waterfall” display in the background of t

Seite 51 - SCOPE CHANNEL SELECTION

CUEMIX FX55Spectrogram controlsThe Floor control (Figure 9-6) sets the amplitude threshold for the spectrogram display, from -144 dB up to 1 dB.The A

Seite 52 - DEVICES MENU

CUEMIX FX56View menuThe View menu (Figure 9-11) lets you choose how you wish to display the audio channel(s) being displayed.Display optionsThe Axes c

Seite 53 - FFT ANALYSIS / SPECTROGRAM

CUEMIX FX57Figure 9-13: Waveform Recognition menuType I recognition provides the most stable display of the waveform. It is the most resistant to cha

Seite 54 - Silence Full scale

CUEMIX FX58HoldoffHoldoff defines a time interval during which the oscilloscope does not trigger. The most recent trace will be displayed during that p

Seite 55 - OSCILLOSCOPE

CUEMIX FX59To adjust the left and right edges of the measurement area, click and drag the blue bars in the graph, or click and drag the blue numbers

Seite 57 - Criteria check boxes

CUEMIX FX60screen, try raising the Holdoff level. Once the transient is settled in the display and fairly stable, you may need to adjust the horizonta

Seite 58 - Color Status

CUEMIX FX61X-Y PLOTThe X-Y Plot window (Figure 9-17) graphs the amplitude of a stereo audio signal on a two-dimensional grid. For each unit of time (

Seite 59

CUEMIX FX62Choosing a channel to displayThe X-Y Plot follows the currently chosen Scope channels (Figure 9-1 on page 48).View controlsThe View control

Seite 60

CUEMIX FX63PersistenceThe Persistence controls (Figure 9-21) affect the appearance of data from when it is first displayed until it disappears from th

Seite 61 - X-Y PLOT

CUEMIX FX64PHASE ANALYSISThe Phase Analysis window (Figure 9-23 on page 64) graphs frequency versus phase difference versus amplitude of a stereo sign

Seite 62 - Pause button

CUEMIX FX65Line/ScatterChoose either Line or Scatter from the menu in the View section (Figure 9-24) to plot each data point as either a single pixel

Seite 63

CUEMIX FX66Horizontal and vertical controlsThe Horizontal and Ve r t i c al controls (Figure 9-28) let you scale each axis of the grid and offset it

Seite 64 - PHASE ANALYSIS

CUEMIX FX67outside the critical frequency range of the instrument being recorded, you can avoid phase problems among the mic signals.Tun i ng PA sys

Seite 65

CUEMIX FX68TUNERThe Tu n e r window is an accurate and easy to use tuner.Opening the TunerEach MOTU audio interface has its own Tuner window. Choose

Seite 66 - Figure 9-29: Filters

CUEMIX FX69CONFIGURATIONS MENUA configuration is just like a hardware preset (a “snapshot” of all settings in CueMix FX and therefore the 8pre USB har

Seite 67 - Inverted

0 Quick Reference: 8pre USB USB Front Panel 1 36784 1. Each analog input has individual front panel controls, including a preamp gain knob, 48 volt p

Seite 68 - ArrowDetected

CUEMIX FX70CONTROL SURFACES MENUCueMix FX can be controlled from an automated control surface such as the Mackie Control™. Use the commands in the Con

Seite 69 - PHONES MENU

CUEMIX FX71Figure 9-32: Refer to the extensive on-line help for details aboutconfiguring CueMix FX for operation with your control surfaceproduct.CUEM

Seite 71

CHAPTER7310 MOTU SMPTE ConsoleOVERVIEWThe 8pre USB can resolve directly to SMPTE time code via any analog input, without a separate synchronizer. The

Seite 72

MOTU SMPTE CONSOLE74detect and switch to the incoming frame rate, except that it cannot distinguish between 30 fps and 29.97 fps time code, or 23.976

Seite 73 - MOTU SMPTE Console

MOTU SMPTE CONSOLE75COMPANYCONFIDENTIALMOTUThe 8pre USB cannot freewheel address without clock. Therefore, the Freewheel Address setting will always

Seite 74 - READER SECTION

MOTU SMPTE CONSOLE76SETUP FOR SMPTE TIME CODE SYNCThe 8pre USB system can resolve directly to SMPTE time code. It can also generate time code, under i

Seite 75 - GENERATOR SECTION

CHAPTER7711 TroubleshootingWhy does the start sound not play through the 8pre USB? The 8pre USB will only playback audio at a sampling rate of 44.1, 4

Seite 76 - This setup provides:

TROUBLESHOOTING78CUSTOMER SUPPORTWe are happy to provide customer support to our registered users. If you haven’t already done so, please take a momen

Seite 77 - Troubleshooting

INDEX7902R mixer 2424-bitoptical 12recording 1348V phantom power 7, 498preinstalling 19rear panel overview 11summary of features 118pre USBSMPTE sett

Seite 78 - TECHNICAL SUPPORT

0 Quick Reference: 8pre USB USB Rear Panel 1 2 3 4 5 1. The two ADAT optical (“lightpipe”) ports in the top row provide eight channels of digital inp

Seite 79

INDEX80connecting 22phantom power 7MIDIdevices, connecting 21jacks 8Windows driver installation 18Mix 1 Return 1-2 38Mix1 return includes computer out

Seite 80

CHAPTER 9 Quick Reference: MOTU Audio ConsoleThis menu lets you choose what you will hear from the headphone jack. To mirror the main outs, choose Ma

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