User Manual
Table Of Contents
- Title Page
- Quick Start Guide
- 1248 Front Panel
- 1248 Rear Panel
- 8M Front Panel
- 8M Rear Panel
- 16A Rear Panel
- 16A Front Panel
- MOTU AVB Switch
- MOTU AVB Control Web App
- Overview
- It’s not on your hard drive
- Use your favorite web browser
- Control from multiple devices
- Run the installer, get the app
- Make hardware and network connections
- Launching the web app
- Device tab
- Device tab (continued)
- Routing tab
- Mixing tab
- Aux Mixing tab
- Mixer input channel strips
- Main Mix and Monitor channel strips
- Aux bus channel strips
- Group and Reverb channel strips
- 1 About Your MOTU AVB Audio Interface
- State-of-the-art A/D and D/A conversion
- Complementary I/O configurations
- 1248
- 8M
- 16A
- Network I/O
- Universal connectivity
- On-board DSP with mixing and effects
- 32-bit floating point processing
- Modeled vintage effects processing
- AVB system expansion and audio networking
- Matrix routing and multing
- 256 channels of network audio I/O for your host computer
- Web app control
- Stand-alone mixing with wireless control
- ADAT digital I/O
- S/PDIF digital I/O with SRC
- Word clock
- Comprehensive metering
- Headphone outputs
- Precision Digital Trim™
- Rack mount or desktop operation
- AudioDesk
- 2 Packing List and System Requirements
- 3 Software Installation
- 4 Hardware Installation
- Overview
- Rack installation and heat
- Thunderbolt audio interface setup
- USB audio interface setup
- Setup for two interfaces
- Setup for three to five interfaces
- Setup for a multi-switch network
- Setup for multiple Thunderbolt and USB interfaces
- Setup for web app control
- Audio connections
- A typical 1248 setup
- A typical 8M setup
- A typical 16A setup
- Synchronization
- Syncing S/PDIF devices
- Syncing word clock devices
- Syncing an AVB network
- 5 Presets
- 6 The Front Panel LCD
- 7 Working with Host Audio Software
- Overview
- Preparation
- Run the web app
- Sample rate
- Clock Mode
- Enabling and disabling input/output banks
- Specifying the number of computer channels
- Making inputs and outputs available to your host software
- Configuration presets
- Naming computer input and output channels
- Streaming computer audio to and from the onboard mixer
- Working with AVB network streams
- Mirroring computer channels to multiple outputs
- Combining multiple inputs to one output
- Routing grid tutorials
- Choosing the MOTU Audio driver
- Reducing monitoring latency
- Working with on-board mixing and effects
- Synchronization
- 8 Mixer Effects
- 9 Networking
- A Troubleshooting
- B Audio Specifications
- C Mixer Schematics
- D Updating Firmware
- E OSC Support
- Index
APPENDIX B: AUDIO SPECIFICATIONS
87
8M
Line Out
Connector Type 1/4” Female, TRS Balanced, Tip hot
Output Impedance 100 ohm Per leg
Dynamic Range 123 dB A-weighted
THD+N -110 dB (0.0003%) -1 dBFS, Unweighted, 1 kHz
Frequency Response +0 -0.1 dB, 20 Hz/20 kHz Ref. 1 kHz
Max Level Out +20 dBu
Trim Range 24 dB in 1 dB steps -4 dBu to +20 dBu
MIC in
Connector Type Combo-style, XLR / TRS Pin 2 hot, tip hot
XLR
Impedance load 3 k ohm, 4.5 k with Pad
Pad -20 dB, Switchable per channel
Phantom power +48 v, switchable per channel DIN 45596 / IEC 61938-P48
EIN -128 dBu XLR Terminated
Dynamic Range 112 dB A-weighted
THD+N -104 dB Unweighted
Frequency Response +0 -0.1 dB, 20 Hz/20 kHz Ref. 1 kHz
Max Level In with Pad +24 dBu V-Limit starts at 17 dBu
Max Level In without Pad +5 dBu V-Limit starts at 4 dBu
Trim range 0 to +53 dB in 1 dB steps
TRS
Description Balanced or single ended Suitable for line or instrument (guitar)
Impedance Load 1 meg ohm differential
Pad -20 dB, Switchable per channel
Phantom power No
Dynamic Range 112 dB A-weighted
THD+N -102 dB -1 dBFS, Unweighted
Frequency Response +0 -0.1 dB, 20 Hz/20 kHz Ref. 1 kHz
Max Level in with Pad +17 dBu V-Limit starts at +7 dBu
Max Level in without Pad +5 dBu V-Limit starts at -3 dBu
Trim range 0 to +53 dB in 1 dB steps
V-Limit Compressor Range 9 dB
Phones
Connector Type 1/4” Female, TRS Stereo Tip Left, Ring Right
Dynamic Range 102 dB A-Weighted
THD+N -92 dB Unweighted
Drive Max. 80 mw 16/32/55 ohms
Frequency Response +0 -0.27 dB, 20 Hz/20 kHz Ref. 1 kHz
Trim Range -128 dB (muted) to 0, in 1 dB steps