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
WORKING WITH HOST AUDIO SOFTWARE
65
Live
Open the Preferences window and click the Audio
tab. Choose Core Audio from the Driver Type
menu. Choose 1248 (or other MOTU interface
model) from the Input Audio Device and Output
Audio Device menus. To enable or disable input or
output channels, click the Input Config or Output
Config buttons.
Reason and Record
Open the Preferences window, choose Audio
preferences from the menu and choose 1248 (or
other MOTU interface model) from the Audio
Output menu.
Reaper
Open the Preferences window and click Devices
under the Audio preferences. Choose 1248 (or
other MOTU interface model) from the Audio
Device menu.
Other audio software
Consult your software’s manual for further
information.
REDUCING MONITORING LATENCY
Monitoring latency is a slight delay caused by
running an input signal through your host audio
software and back out. For example, you might
hear it when you drive a live guitar input signal
through an amp modeling plug-in running in your
audio sequencer.
This delay is caused by the amount of time it takes
for audio to make the entire round trip through
your computer, from when it first enters an input
on your MOTU interface, passes through the
interface hardware into the computer, through
your host audio software, and then back out to an
output.
Monitoring through your MOTU interface
If you don’t need to process a live input with
plug-ins, the easiest way to avoid monitoring
latency is to disable your DAW’s live monitoring
feature and instead use the digital mixer in your
MOTU interface to route the input directly to your
outputs. For details, see “Mixing tab” on page 21.
The mixer in your MOTU interface even provides
zero latency effects processing (EQ, compression
and reverb), which can be applied to the signal.
Direct hardware playthrough / Direct ASIO
monitoring
When managing your live monitor mix through
your MOTU interface mixer, remember to disable
your DAW’s live monitoring features, so that you
won’t hear record-enabled tracks in your DAW.
Also note that your MOTU AVB interface does not
support Direct Hardware Playthrough in Digital
Performer, or the Direct ASIO Monitoring feature
(or similar) offered and other DAWs, which lets
you control no-latency hardware monitoring from
within the host application. Instead, you can use
the MOTU AVB Control web app mixer (“Mixing
tab” on page 21) to make these live monitoring
connections manually.
If you don’t require any effects processing on the
input signal (no reverb or compression, for
example), all this takes is one click in the routing
grid to route the input being recorded to the output
you are using for monitoring.
If you are recording a mono input that you’d like to
monitor in stereo, or if you need to apply effects to
the monitored signal, you can simply route the
input to the mixer in your MOTU interface. This is
done by opening the Mix In group in the Outputs
column along the left side of the grid (Figure 7-2
on page 63), and clicking the tile at the intersection
of the input’s column and the desired mixer input’s
row. Once routed to the mixer, use the input
channel, reverb bus, and monitor bus in the mixer
to apply effects as desired, and perhaps include
other channels to the mix, and then assign the
monitor bus output in the routing grid to the
output you are using for monitoring.