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
MIXER EFFECTS
70
GATE
All input channel strips provide a Gate module.
Figure 8-1: The Gate module.
The gate silences the signal when the input signal’s
level drops below the Threshold.
The rate at which the gate responds, (opens to let
signal through) is determined by the Attack
parameter. With a short Attack time, the gate will
open as soon as the signal crosses the Threshold;
with longer Attack times, the gate will gradually
open, much like a fade-in.
When the input level falls back below the
Threshold, the time it takes for the gate to close
(how quickly the signal is attenuated), is
determined by the Release parameter. Short
Release times will close the gate quickly, abruptly
attenuating your signal, versus longer release times,
which will gradually attenuate your signal, like a
natural fade-out.
FOUR-BAND PARAMETRIC EQ
All mixer channel strips, (except for the Monitor
bus), provide modeled, four-band parametric EQ.
Vintage EQ
Inspired by legendary British large console EQs,
the EQ section (Figure 8-2) models the sound of the
most sought-after classic equalizers. Four bands of
center frequency parametric EQ filtering are
provided, each with a bandwidth control. The
High and Low bands include a shelf filtering
option. With 32-bit floating point precision, the
vintage EQ has been carefully crafted and
meticulously engineered to produce musical
results in a wide variety of applications.
Enabling EQ
Each band has an enable/disable button
(Figure 8-2), allowing you to enable as few or as
many bands as needed for the channel strip.
Figure 8-2: The Four-band parametric EQ module.
EQ filter controls
The EQ filters have three controls:
Double-click a knob to return to its default
position.
EQ filter characteristics
EQ is one of the most widely used processing tools
and can be applied to many different situations,
from minor corrective tasks to creative tone
sculpting. The four-band EQ has been designed to
Control unit range
Gain dB -20.00 to +20.00
Frequency Hertz 20 to 20,000
Bandwidth Octaves 0.01 to 3.00
Disabled band
Enable/disable