MOTU Audio Express User's Guide Page 12
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- Table of contents
- TROUBLESHOOTING
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ABOUT THE 4PRE
12
6 inputs and 8 outputs
All 4pre inputs and outputs can be used simulta-
neously, for a total of 6 inputs and 8 outputs:
All inputs and outputs are discrete and can be
active simultaneously.
The headphone output can operate as an
independent output pair, or it can mirror any other
4pre output pair, such as the line outs.
The second headphone output (labeled MAIN)
always mirrors main outs.
Mic/guitar inputs with preamps
The four mic/instrument inputs are equipped with
preamps and “combo” XLR/TRS jacks, which
accept XLR microphone inputs or quarter-inch
guitar/line inputs, as indicated below each
connector. Individual 48 volt phantom power and a
20 dB pad can be supplied independently to each
mic input. The Precision Digital Trim™ knobs on
the front panel for each mic/instrument input
provide 60 dB of boost for the XLR mic input and
22 dB of boost for the TRS input in approximately
1 dB increments.
Analog outputs
All four quarter-inch analog outputs are on
balanced TRS +4dB jacks. All of these jacks can
also accept unbalanced plugs.
Precision Digital Trim™
All of the 4pre’s mic/guitar inputs are equipped
with digitally controlled analog trims that allow
adjustments in approximately 1 dB increments
using front-panel digital rotary encoders or the
CueMix FX control software for Mac and
Windows, with 60 dB of adjustment for the mic
input and 22 dB for the TRS input. This allows you
to fine-tune trim settings for guitars, synths, effects
modules and a wide variety of analog inputs for
optimum levels. Different trim configurations can
then be saved as files on disk for instant recall.
S/PDIF
The 4pre rear panel provides coaxial
S/PDIF input and output.
SMPTE time code synchronization
The 4pre can resolve directly to SMPTE time code
via any analog input, without a separate
synchronizer. It can also generate time code via any
analog output. The 4pre provides a DSP-driven
phase-lock engine with sophisticated filtering that
provides fast lockup times and sub-frame
accuracy.
The included MOTU SMPTE Console™ software
provides a complete set of tools for generating and
regenerating SMPTE time code, which allows you
to slave other devices to the computer. Like
CueMix FX, the synchronization features are
cross-platform and compatible with any audio
software that supports the ASIO 2 or 3 sample-
accurate sync protocol.
Hybrid FireWire/USB2 connectivity
FireWire has long been recognized as a reliable,
high-performance connectivity standard for
professional MOTU audio interfaces. Meanwhile,
high-speed USB2 has also developed into a widely
adopted standard for connecting peripheral
devices to personal computers.
To fully support both formats, your 4pre Hybrid
audio interface is equipped with both a 9-pin
FireWire B (400 Mbit/sec) connector and a hi-
speed USB2 (480 Mbit/sec) connector, and you can
use either port to connect the 4pre to your
Connection Input Output
Analog 24-bit 96 kHz on bal/unbal TRS - 4
Mic preamps 24-bit 96 kHz on XLR/TRS combo 4 -
SPDIF 24-bit 96kHz digital 2 2
Stereo headphones with independent output - 2
Total 6 8
- User Guide for Windows 1
- Contents 3
- Getting Started 5
- 3 4 5 6 7 8 9 7
- How to access these settings 9
- About the 4pre 11
- Connection Input Output 12
- Total 6 8 12
- THE 4PRE FRONT PANEL 13
- 16-BIT AND 24-BIT RECORDING 13
- CUEMIX MIXING AND EFFECTS 13
- INCLUDED SOFTWARE 13
- HOST AUDIO SOFTWARE 14
- Packing List and System 15
- Requirements 15
- Installing the 4pre Software 17
- MOTU AUDIO DRIVERS 18
- MOTU AUDIO CONSOLE 18
- CUEMIX FX 18
- MOTU SMPTE CONSOLE 18
- Installing the 4pre Hardware 19
- CONNECT THE 4PRE INTERFACE 20
- INSTALLING THE 4PRE HARDWARE 21
- FireWire INPUT 3 knob 21
- USB INPUT 4 knob 21
- Input 48V Pad Trim 22
- POWER OPTIONS 23
- Voltage Amperage 24
- A TYPICAL 4PRE SETUP 25
- INSTALLING THE 4PRE HARDWARE 26
- Using the 4pre 29
- MOTU Audio Console 31
- ‘GENERAL’ TAB SETTINGS 32
- MOTU AUDIO CONSOLE 33
- ‘4PRE’ TAB SETTINGS 34
- 4pre Front Panel Operation 35
- MIXING WITH THE FRONT PANEL 36
- CONTROLS 36
- Do this To do this 37
- METERING AND ACTIVITY LEDS 38
- RESTORING FACTORY DEFAULTS 38
- OVERVIEW 39
- PREPARATION 39
- RUN MOTU AUDIO CONSOLE 39
- REDUCING LATENCY 43
- WORKING WITH 4PRE INPUTS AND 43
- PLUG-INS 44
- WORKING WITH CUEMIX FX MIXING 44
- SYNCHRONIZATION 44
- Reducing Monitoring Latency 45
- MONITORING LIVE INPUT 46
- CUEMIX HARDWARE MONITORING 48
- REDUCING MONITORING LATENCY 49
- REDUCING MONITORING LATENCY 50
- CueMix FX 51
- WORKING WITH A MIX 53
- SHORTCUTS 54
- INFO DISPLAY 54
- TALKBACK AND LISTENBACK 54
- CUEMIX FX 55
- SCOPE CHANNEL SELECTION 56
- FILE MENU 56
- EDIT MENU 56
- DEVICES MENU 57
- FFT ANALYSIS / SPECTROGRAM 57
- Pause button 58
- Display options 58
- Silence Full scale 58
- OSCILLOSCOPE 59
- View menu 60
- Trigger indicator 61
- Trigger menu 61
- Criteria check boxes 61
- Trigger mode What it does 62
- Color Status 62
- X-Y PLOT 65
- PHASE ANALYSIS 68
- Figure 9-29: Filters 70
- Polar view 71
- Rectangular 71
- Inverted 71
- CONFIGURATIONS MENU 72
- TALKBACK MENU 73
- PHONES MENU 73
- CONTROL SURFACES MENU 73
- MOTU SMPTE Console 75
- READER SECTION 76
- GENERATOR SECTION 77
- SYNCING TO SMPTE TIME CODE 78
- Troubleshooting 79
- TECHNICAL SUPPORT 80
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