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
23
MIXER INPUT CHANNEL STRIPS
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6
To access a mixer input channel strip, go
to the mixer tab (page 21), reveal the side
bar (item #3 on page 21), and then show
the input channel you want in the Mixer
Inputs section (29).
To show and hide sections of the channel
strip, such as EQ or the compressor, use
the Controls section of the side bar (item
#3 in the mixer tab on page 21).
1. Click the input channel name to
change it. Delete the current name to
restore the default name.
2. Provides hardware settings for the
input. For example, if the input is a
mic input, you’ll see settings for
preamp gain, 48V phantom power
and so on.
3. Choose the source for the input
channel. You can also make this
setting directly on the Routing grid
(page 20).
4. Create, name, save and recall channel
strip presets.
5. Toggles the input between mono and
a stereo pair.
6. High Pass Filter with cutoff frequency.
7. Each effect in the channel strip (High
Pass Filter, Gate, EQ, etc.) has an on/
off button (on the left) and a preset
menu on the right, for managing
presets that apply only to that
processing module. For example, you
can create your own EQ presets for the
EQ modules.
8. The Gate processor provides standard
attack, threshold and release
controls.
9. The Gate indicator turns red when the
gate is engaged.
10. The EQ section provides four bands of
parametric EQ, each with standard
Gain, Frequency, and Bandwidth
settings.
11. The High and Low EQ bands provide a
Shelf filter button for standard high
and low shelf filtering.
12. The Compressor provides standard
controls for Threshold, Ratio, Attack,
Release and Gain. Normally, the
compressor operates in Peak mode,
where signal peaks determine the
input level. Engage the RMS button to
uses RMS values (a computational
method for determining overall
loudness) to measure the input level.
13. Input level and gain reduction meters
for the compressor.
14. Aux and reverb sends.
15. Solo/Mute. Mute affects all sends as
well as the main channel. Pre-fader
sends are not affected by Mute.
16. Move the fader to adjust level.
Double-click to return to zero (unity
gain) or -∞.
17. Click the dB scale numbers to make
the fader jump exactly to that level.
Click and drag horizontally to jump
consecutive faders to the same level.
18. Click to type in an exact dB level.
19. Channel pan. For mono inputs,
double-click to center.
20. Main Mix Slider is used to feed signal
to the Main Mix. Slider is set to 0 dB
by default, so all channel strips are
pre-routed to the Main Mix bus. If a
channel is being sent to a Group
(which will eventually be fed to the
Main Mix), drag the slider to -∞ so it
is not sent to Main Mix directly.
21. Group sends.
22. ‘S’ lets you solo the group. ‘PRE’
toggles the sends between pre- and
post-fader routing, i.e. before or after
the channel fader.
23. Clears all solos.
24. ‘S’ lets you solo the Aux bus. ‘PRE’
toggles the sends between pre- and
post-fader routing, i.e. before or after
the channel fader. The dots let you
toggle the Aux bus between mono
and stereo.
25. This side bar, with the section labels
in it, can be shown or hidden using
the Legend switch in the Controls
section of the side bar (item #3 in the
mixer tab on page 21).
26. Shows how much DSP power is being
used by the mixer hardware. To free
up DSP bandwidth, try reducing the
number of mixer ins, disabling
channel effects, reverb, etc. See “DSP
Usage” on page 74 for more info.
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