MOTU 828es User manual

™
828es
1280 Massachusetts Avenue
Cambridge, MA 02138
Business voice: [phone]
Business fax: [phone]
Web site: www.motu.com
Tech support: www.motu.com/support
Title Page
User Guide

SAFETY PRECAUTIONS AND ELECTRICAL REQUIREMENTS FOR THE 828es (“PRODUCT”)
CAUTION! READ THIS SAFETY GUIDE BEFORE YOU BEGIN INSTALLATION OR OPERATION. FAILURE TO COMPLY WITH SAFETY INSTRUCTIONS
COULD RESULT IN BODILY INJURY OR EQUIPMENT DAMAGE.
HAZARDOUS VOLAGES: CONTACT MAY CAUSE ELECTRIC SHOCK OR BURN. TURN OFF UNIT BEFORE SERVICING.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR OTHER MOISTURE.
CAUTION:TO REDUCETHE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICINGTO QUALIFIED
SERVICE PERSONNEL.
WARNING: DO NOT PERMIT FINGERS TOTOUCH THE TERMINALS OF PLUGS WHEN INSTALLING OR REMOVING THE PLUG TO OR FROM THE OUTLET.
WARNING: IF NOT PROPERLY GROUNDED THE MOTU PRODUCT COULD CAUSE AN ELECTRICAL SHOCK.
The MOTU product is equipped with a three-conductor cord and grounding type plug which has a grounding prong, approved by Underwriters' Laboratories and the Canadian Standards Association. This plug requires a
mating three-conductor grounded type outlet as shown in Figure A below. If the outlet you are planning to use for the MOTU product is of the two prong type, DO NOT REMOVEOR ALTERTHE GROUNDING PRONG IN ANY
MANNER. Use an adapter as shown below and always connect the grounding lug to a known ground. It is recommended that you have a qualified electrician replace theTWO prong outlet with a properly groundedTHREE
prong outlet. An adapter as illustrated below in Figure B is available for connecting plugs to two-prong receptacles.
WARNING: THE GREEN GROUNDING LUG EXTENDING FROM THE ADAPTER MUST BE CONNECTED TO A PERMANENT GROUND SUCH AS TO A PROPERLY
GROUNDED OUTLET BOX. NOT ALL OUTLET BOXES ARE PROPERLY GROUNDED.
If you are not sure that your outlet box isproperly grounded, have it checked by a qualified electrician. NOTE:The adapter illustrated isfor use only if you already have a properly grounded two-prong receptacle. Adapter is not
allowed in Canada by the Canadian Electrical Code. Use only three wire extension cords which have three-prong grounding type plugs and three-prong receptacles which will accept the MOTU product plug.
IMPORTANT SAFEGUARDS
1. Read these instructions.All the safety and operating instructions should be read before operating the product.
2. Keep these instructions.These safety instructions and the product owner’s manual should be retained for future reference.
3. Heed all warnings. All warnings on the product and in the owner’s manual should be adhered to.
4. Follow all Instructions. All operating and use instructions should be followed.
5. Do not use the product near water.
6. Cleaning - Unplug the product from the computer and clean only with a dry cloth. Do not use liquid or aerosol cleaners.
7. Ventilation - Do not block any ventilation openings. Install in accordance with the manufacturer’sinstructions.
8. Heat - Do not install the product near any heat sources such as radiators, heat registers, stoves, or another apparatus (including an amplifier) that produces heat.
9. Overloading - Do not overload wall outlets and extension cords as this can result in a risk of fire or electrical shock.
10. Grounding - Do not defeat the safety purpose of the polarized or grounding-type plug.A polarized plug has two blades withone wider than the other. A grounding-type plug has two blades and athird groundingprong.
The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult and electrician for replacement of the obsolete outlet.
11. Power cord - Protect the product power cord from being walked on or pinched by items placed upon or against them. Pay particular attention to cords and plugs,convenience receptacles, and the point where they exit
from the unit.
12. Power switch - Install the product so that the power switch can be accessed and operated at all times.
13. Disconnect -The main plug is considered to be the disconnect device for the product and shall remain readily operable.
14. Accessories - Only use attachments/accessories specified by the manufacturer.
15. Placement - Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the product.When a cart is used, use caution when moving the cart/apparatus combination to avoid injury
from tip-over.
16. Surge protection - Unplug the product during lightning storms or when unused for long periods of time.
17. Servicing - Refer all servicing to qualified service personnel. Servicing is required when the product has been damaged in any way, such as when a power-supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the product, the product has been exposed to rain or moisture, does not operate normally, or has been dropped.
18. Power Sources - Refer to the manufacturer’s operating instructions for power requirements. Be advised that different operating voltages may require the use of a different line cord and/or attachment plug.
19. Installation - Do not install the product in an unventilated rack, or directly above heat-producing equipment such as power amplifiers. Observe the maximum ambient operating temperature listed below.
20. Power amplifiers- Never attach audio power amplifier outputs directly to any of the unit’s connectors.
21. Replacement Parts -When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock or other hazards.
22. Safety Check - Upon completion of any service or repairs to thisMOTU product, ask the service technician to perform safety checks to determine that the product is in safe operating conditions.
ENVIRONMENT, HEAT AND VENTILATION
OperatingTemperature: 10°C to 40°C (50°F to 104°). The product should be situated away from heat sources or other equipment that produces heat.When installing the product in a rack or any other location, be sure there
is adequate spacearound the product to ensure proper ventilation. Improper ventilation will cause overheating and can damage the unit.
TO REDUCE THE RISK OF ELECTRICAL SHOCK OR FIRE
Do not handle the power cord with wet hands. Do not pull on the power cord when disconnecting it from an AC wall outlet.
Grasp it by the plug. Do not expose this apparatus to rain or moisture. Do not place objects containing liquids on it.
AC INPUT
100 - 240VAC ~ • 50 / 60Hz • 0.5A max
3-prong plug
Grounding prong
Properly grounded 3-prong outlet
Grounding lug
Screw
3-prong plug
Adapter
Make sure this is connected to
a known ground.
Two-prong receptacle
Figure A Figure B

iii
Contents
Part 1: Getting Started
7Quick Start Guide
9828es Front Panel
10 828es Rear Panel
11 MOTU Pro Audio Control Web App
23 About the 828es
27 Packing List and System Requirements
29 Software Installation
33 Hardware Installation
Part 2: Using the 828es
53 Presets
57 Front Panel Operation
63 Working with Host Audio Software
71 Mixer Effects
79 MOTU Audio Tools
95 Networking
Part 3: Appendices
103 Troubleshooting
105 Audio Specifications
109 Mixer Schematics
113 Updating Firmware
115 OSC Support
117 Index

About the Mark of the Unicorn License
Agreement and Limited Warranty on Software
TO PERSONSWHO PURCHASE OR USE THIS PRODUCT: carefully read all the terms and
conditions of the “click-wrap”license agreement presented to you when you install
the software. Using the software or this documentation indicates your acceptance of
the terms and conditions of that license agreement.
Mark of the Unicorn, Inc. (“MOTU”) owns both this program and its documentation.
Both the program and the documentation areprotected under applicable copyright,
trademark, and trade-secret laws.Your right to use the program and the
documentation are limited to the terms and conditions described in the license
agreement.
REMINDER OF THE TERMS OF YOUR LICENSE
This summary is not your license agreement, just a reminder of its terms.The actual
license can be read and printed by runningthe installation program for the software.
That license agreement is a contract, and clicking “Accept”binds you and MOTU to all
its terms and conditions. In the event anything contained in this summary is
incomplete or in conflict with the actual click-wrap license agreement, the terms of
the click-wrap agreement prevail.
YOU MAY: (a) use the enclosed program on a single computer; (b) physically transfer
the program from one computer to another provided that the program is used on
onlyone computeratatime and thatyouremoveany copies of the programfromthe
computer from which the program is being transferred; (c) make copies of the
program solely for backup purposes.You must reproduce and include the copyright
notice on a label on any backup copy.
YOU MAY NOT: (a) distribute copies of the program or the documentation to others;
(b) rent, lease or grant sublicenses or otherrights to the program; (c) provide use of
the program in a computer service business, network, time-sharing, multiple CPU or
multiple user arrangement without the prior written consent of MOTU; (d) translate,
adapt, reverse engineer, decompile, disassemble, or otherwise alter the program or
related documentation without the prior written consent of MOTU.
MOTU warrants to the original licensee that the disk(s) on which the program is
recorded be free from defects in materials and workmanship under normal use for a
period of ninety (90) days from the date ofpurchase as evidenced by a copy of your
receipt. If failure of the disk has resulted from accident, abuse or misapplication of the
product, then MOTU shall have no responsibility to replace the disk(s) under this
LimitedWarranty.
THIS LIMITED WARRANTY AND RIGHT OF REPLACEMENT IS IN LIEU OF, AND YOU
HEREBYWAIVE, ANY AND ALL OTHER WARRANTIES, BOTH EXPRESS AND IMPLIED,
INCLUDING BUT NOT LIMITEDTOWARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE.THE LIABILITY OF MOTU PURSUANTTOTHIS LIMITED
WARRANTY SHALLBELIMITEDTOTHE REPLACEMENTOFTHEDEFECTIVE DISK(S), AND
IN NO EVENT SHALL MOTU OR ITS SUPPLIERS, LICENSORS, OR AFFILIATES BE LIABLE
FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITEDTO
LOSS OF USE, LOSS OF PROFITS, LOSS OF DATA OR DATA BEING RENDERED INACCURATE,
OR LOSSES SUSTAINED BYTHIRD PARTIES EVEN IF MOTU HAS BEEN ADVISED OFTHE
POSSIBILITY OF SUCH DAMAGES.THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS
WHICH MAYVARY FROM STATE TO STATE. SOME STATES DO NOT ALLOWTHE
LIMITATION OR EXCLUSION OF LIABILITY FOR CONSEQUENTIAL DAMAGES, SOTHE
ABOVE LIMITATION MAY NOT APPLYTOYOU.
UPDATE POLICY
In order to be eligible to obtain updates of the program, you must complete and
return the attached Mark of the Unicorn Purchaser Registration Card to MOTU.
COPYRIGHT NOTICE
Copyright © 2017 by Mark of the Unicorn, Inc. All rights reserved. No part of this
publication may be reproduced, transmitted, transcribed,stored in aretrievalsystem,
or translated into any human or computer language, in any form or by any means
whatsoever, without express written permission of Mark of the Unicorn, Inc., 1280
Massachusetts Avenue, Cambridge, MA, 02138, U.S.A.
LIMITED WARRANTY ON HARDWARE
Mark of the Unicorn, Inc. and S&S Research (“MOTU/S&S”) warrant this equipment
againstdefects in materialsand workmanshipfora periodofTWO(2)YEARS fromthe
date of original retail purchase.This warranty applies only to hardware products;
MOTU software is licensed and warranted pursuant to separate written statements.
If you discover a defect, first write or call Mark of the Unicorn at [phone] to
obtaina Return MerchandiseAuthorization Number. No service will be performed on
any product returned without prior authorization. MOTU will, at its option, repair or
replace the product at no charge to you,provided you return it during the warranty
period, with transportation charges prepaid, to Mark of the Unicorn, Inc., 1280
Massachusetts Avenue, MA 02138.You must use the product’s original packing
material for in shipment, and insurethe shipment for the value of the product. Please
includeyourname,address,telephonenumber, a descriptionof the problem,andthe
original, dated bill of sale with the returned unit and print the Return Merchandise
Authorization Number on the outside of the box below the shipping address.
Thiswarrantydoesnotapplyiftheequipmenthasbeendamagedbyaccident,abuse,
misuse, or misapplication; has been modified without the written permission of
MOTU, or if the product serial number has been removed or defaced.
ALL IMPLIEDWARRANTIES, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATIONTOTWO (2)
YEARS FROMTHE DATE OFTHE ORIGINAL RETAIL PURCHASE OFTHIS PRODUCT.
THEWARRANTY AND REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF
ALL OTHERS, ORAL ORWRITTEN, EXPRESS OR IMPLIED. No MOTU/S&S dealer, agent,
or employee is authorized to make any modification, extension, or addition to this
warranty.
MOTU/S&S ARE NOT RESPONSIBLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES RESULTING FROM ANY BREACH OFWARRANTY, OR UNDER ANY LEGAL
THEORY, INCLUDING LOST PROFITS, DOWNTIME, GOODWILL, DAMAGE OR
REPLACEMENT OF EQUIPMENT AND PROPERTY AND COST OF RECOVERING REPRO-
GRAMMING, OR REPRODUCING ANY PROGRAM OR DATA STORED IN OR USEDWITH
MOTU/S&S PRODUCTS.
Some states do not allow the exclusion or limitation of implied warranties or liability
forincidentalorconsequential damages,so the abovelimitationor exclusion may not
apply to you.This warranty gives you specific legal rights, and you may have other
rights which vary from state to state.
MOTU, Digital Performer, AudioDesk, Mark of the Unicorn and the unicorn silhouette
logo are trademarks of Mark of the Unicorn, Inc.
Thunderbolt and theThunderbolt logo are trademarks of Intel Corporation in the U.S.
and/or other countries.
This equipment has been type tested and found to comply with the limits for a class B digital
device, pursuant to Part 15 of the FCC Rules.These limits are designed to provide reasonable
protection against harmful interference in a residential installation.This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause interference to radio or television equipment reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by any
combination of the following measures:
• Relocate or reorient the receiving antenna
• Increase the separation between the equipment and the receiver
• Plug the equipment into an outlet on a circuit different from that to which the receiver is
connected
If necessary, you can consult a dealer or experienced radio/television technician for additional
assistance.
PLEASE NOTE: only equipment certified to comply with Class B (computer input/output devices,
terminals, printers, etc.) should be attached to this equipment, and it must have shielded interface
cables in order to comply with the Class B FCC limits on RF emissions.
WARNING: changes or modifications to this unit not expressly approved by the
party responsible for compliance could void the user's authority to operate the
equipment.

Part 1
GettingStarted

7
Quick Start Guide
Thank you for purchasing an 828es! Follow these
easy steps to get started quickly.
1Download and run the MOTU Pro Audio
Installer found here:
http://www.motu.com/proaudio
2(Optional) For quick access to the 828es from
your iPad or iPhone, download the MOTU
Discovery app from the Apple App Store.
☛Your iPhone and iPad must be on the same
Wi-Fi network as your computer.
3Connect the interface to your computer with a
USB cable (included) or Thunderbolt cable (sold
separately). If you have a Thunderbolt-equipped
Mac running OS X El Capitan (10.11) or later, you
can alternately connect the 828es to the Mac’s
Ethernet port with a standard CAT-5e or CAT-6
Ethernet cable (sold separately).
4Switch on the 828es.
5Open the MOTU Pro Audio Control web app by
doing one of the following:
■Choose the 828es from the MOTU Discovery
app menu (found in the Mac menu bar or
Windows taskbar).
■Alternately, you can launch the MOTU Pro
Audio WebUI Setup shortcut found on the
Windows desktop or in Start menu> All
Programs> MOTU.
■From your iPad or iPhone, launch the MOTU
Discovery app, and tap your interface.
■You should now see the MOTU Pro Audio
Control web app in your browser, as shown on
page 12. If not, visit Appendix A, “Trouble-
shooting” page (103).
■For advanced network options, and device
discovery from any modern browser, see
chapter 11, “Networking” (page 95).
6Choose a preset from the Quick Setup.
Mac Windows

8

828es Front Panel
1. These XLR/TRS combo jacks accept a mic cable or a
quarter-inch cable, balanced or unbalanced, from a guitar
or line input. Use the front panel controls to adjust individ-
ual preamp gain,48V phantom power and optional -20 dB
pad for each mic input.
2. Individual MIC INPUT preamp gain, switchable 48V
phantom power, and optional -20 dB pad switches for
each mic input.The Precision DigitalTrim™ knob provides
63 dB of preamp gain. Turn the knob to see the gain
adjustments in the LCD. Push in the knob to lock the gain
adjustment on screen; press it again to unlock anddismiss.
3. This is the built-in talkback mic, so that you can use the
talkback feature (10) without using up one of the two mic
inputs. See “Talkback”on page 60
4. Press the METERS button to cycle among several LCD
screen sets, which display meters for the analog inputs and
outputs, metering for all digital I/O, device settings and
the menu.
5. Push the MENU knob to enter the LCD menu. Turn it to
scroll through menu options. Push again to go into the
sub-menus, if applicable. To choose the current setting,
push MENU a third time. Use the BACK button to return to
the previous menu level. Push METERS to return directly to
the main screen.
6. The 828es dual color LCDs display metering, device settings
and menu navigation. Press METERS (4) to cycle among
several screen sets or return home after menu navigation.
Use the MENU knob and BACK button for menu navigation.
7. The MONITOR knob controls the volume of both the A and
Bmonitor outputpairs, regardless of which one is currently
selected.To change the relative volume between the A and
B monitor outs, see “Monitor volume control”on page 60.
8. Use the A/B monitor select buttons to switch your studio’s
primary stereo output between two pairs of studio
monitors connected to the 828es XLR main outs andTRS
line outs 1-2, respectively. You can reassign these output
pairs as desired. See “Output assignments for Monitor A
and B”on page 59. To enable both pairs simultaneously,
push both buttons simultaneously.
9. Push MUTE to silence the A/B monitor outputs.
10. Push TALK to speak to musicians located in a separate
studio room or isolation booth via the 828es built-in
talkback mic (3). See “Talkback”on page 60.
11. Two independent HEADPHONE OUTPUTS with volume
control. As you turn the knob, the LCD provides visual
feedback with a volume meter.
12. POWER SWITCH:Thunderbolt, AVB, and USB are “plug-
and-play”protocols. That means you can switch off the
828es and turn it back on without restarting your
computer.
13. Push NET ID to display network settings for the device,
including its IP address.
14. Push MONO to sum each A/B monitor stereo pair to mono.
Push it again to return to stereo operation.
15. Push BACK to go back one level when navigating the LCD
menu.
1 43 10
15 14 13
982 5 6 7 11 12

3101 5 7
828es Rear Panel
1. The 828es is equipped with an auto-switching interna-
tional power supply.
2. These are standard BNC word clock jacks. Use them for a
variety of applications, such as digital transfers with
devices that cannot resolve to the clock supplied by their
digital I/O connection with the 828es.
3. These two banks of ADAT optical “lightpipe”connectors
each provide 8 channels of 24-bit ADAT optical digital I/O
at 1x sample rates (44.1 or 48 kHz) and 4 channels at 2x
sample rates (88.2 or 96 kHz).They are disabled at
higher sample rates. Alternately, they can operate as
stereoTOSLink (optical S/PDIF) connectors.
Note: you can choose independent formats for each
bank, A and B, as well as IN and OUT within each bank.
For example, you could choose ADAT for the optical A IN
(for, say, eight channels of input from your digital mixer)
and stereoTOSLink for the optical A OUT (for, say, your
DAT machine).
4. These jacks provide stereo, 24-bit S/PDIF digital input
and output at all supported sample rates (up to 96 kHz).
When connecting a source to the input, be sure to set the
clock source correctly. See “Syncing S/PDIF devices”on
page 47.
5. Connect a MIDI device here using standard MIDI cables.
Connect the 828es MIDI OUT port to the MIDI IN port on
the other device. Conversely, connect the 828es MIDI IN
port to the MIDI OUT port on the other device. You can
connect different devices to each port, such as a control-
ler device to the IN port and a sound module to the OUT
port. You can also daisy-chain MIDI devices, but be sure
to manage their MIDI channels (so that they don’t
receive or transmit on the same channel).
6. Connect a standard foot switch here for hands-free
punch-in and punch-out during recording. For details
about how to set this up, see item #34 in the Device tab
overview (page 14).
7. These eight analog inputs are balanced (TRS) quarter-
inch connectors that can also accept an unbalanced plug.
Use with line level signals up to +24 dBu, including
synthesizers, drum machines, effects processors, etc.
These inputs are also equipped with the 828es Precision
Digital Trim™ feature: digitally controlled analog trims
that let you adjust input level in 1 dB increments from
the included MOTU Pro Audio Control webapp software.
8. The eight analog outputs are balanced, DC-coupled
quarter-inch connectors that can also accept an unbal-
anced plug. They provide additional analog output for
secondary studio monitors, surround monitoring, sub-
mixes or any other desired destination.The output trim
can be adjusted from the DeviceTab in the MOTU Pro
Audio Control web app software. From the factory,
outputs 1-2 serve as monitor pair B for front panel A/B
monitor switching. (The XLR main outs serve as pair A.)
9. These are quarter-inch analog SMPTE input and output
jacks. Use them to resolve the 828es directly to time code
and transmit time code to other devices.
10. These two XLR jacks serve as the 828es main output pair
for primary (powered) studio monitors, PA speakers or
any other desired destination. You can control their
volume from the front panel MONITOR knob. They also
serve as monitor pair A for the 828es front panel A/B
monitor switching feature.
To hear audio playback from your host audiosoftware on
the MAIN OUT pair, use the Audio Interface preset and
then assign audio tracks (and master fader) to these
main outs.You can also use the MOTU Pro Audio Control
web app to route live 828es inputs (and network inputs)
here as well.
11. These two balanced quarter-inch sends supply the pre-
amplified input signal from the mic/line/instrument
inputs on the front panel. Use them to insert your favor-
ite compressor, EQ, reverb or other outboard effect. Use
any analog input as a return.
12. Connect the 828es to the computer here via either
Thunderbolt or USB, using a standardThunderbolt or
USB cable (one or the other, but not both). For details,
see chapter 5, “Hardware Installation”(page 33).
13. This AVB/TSN Ethernet port provides industry standard
IEEE 802.1 network connectivity to other network
devices. Examples include:
■Another 828es or any other MOTU AVB-equipped audio
interface, such as the 1248, 8M, 16A, 24Ai, 24Ao, 112D,
Monitor 8, etc.
■A standard Ethernet hub orWi-Fi router (for internet
connection and communication with the web app
software).
■A standard AVB Ethernet switch for high-speed, low-
latency, high-capacity audio connectivity to an AVB
audio network.
■A recent-generation Mac (any Mac with aThunderbolt
port) running OS X El Capitan (10.11) or later.This
allows you to operate the 828es as an audio interface
over Ethernet.
2 4
13
8 9
11
6
12

CHAPTER
11
1MOTU Pro Audio Control Web App
OVERVIEW
MOTU Pro Audio Control is a web app that gives
you complete control over the 828es. If you have
several MOTU interfaces networked together,
such as the 828es, 1248 and 8M, you can control
them all. If you are working with a large network
of many MOTU interfaces, you can access any
device on the network.
IT’S NOT ON YOUR HARD DRIVE
The MOTU Pro Audio Control web app is served
from the 828es hardware itself, therefore it is not
an application on your computer’s hard drive.
Instead, access it from the MOTU Discovery app
(in the Mac menu bar or Windows taskbar), the
MOTU Pro Audio WebUI Setup shortcut
(Windows only) or through your web browser.
USE YOUR FAVORITE WEB BROWSER
The MOTU Pro Audio Control web app runs in
any modern web browser on any device connected
to the 828es, either directly or wirelessly through a
Wi-Fi network. You can use any device you wish: a
desktop computer, laptop, iPad, tablet, iPhone or
smart phone. If it can run a web browser, it can run
the web app. You can use any browser you prefer:
Chrome, Firefox, Safari, etc. The latest versions are
strongly recommended.
CONTROL FROM MULTIPLE DEVICES
You can run the web app on multiple host devices
simultaneously.
RUN THE INSTALLER, GET THE APP
Visit www.motu.com/download to get the latest
MOTU Pro Audio Installer and run it on your
computer to install the MOTU Discovery app,
MOTU Pro Audio WebUI Setup shortcut
(Windows only) and other software elements. Visit
the Apple App Store to install the discovery app on
your iPad or iPhone.
MAKE HARDWARE AND NETWORK
CONNECTIONS
Connect your 828es to your computer or laptop
with a USB or Thunderbolt cable. Make sure your
iPad, iPhone, tablet or smartphone is connected to
the same Wi-Fi network as your computer or
device, as explained in “Setup for web app control”
on page 38.
LAUNCHING THE WEB APP
To launch the web app, do any of the following:
■Choose the 828es from the MOTU Discovery
app menu (in the Mac menu bar or Windows
taskbar, as shown on page 7) or launch the MOTU
Pro Audio WebUI Setup shortcut (Windows only).
■From your iPad or iPhone, launch the MOTU
Discovery app.
■In your favorite web browser, type this URL:
localhost:1280. (This URL requires a Thunderbolt
or USB connection to the 828es.)
■If the 828es Ethernet port is connected to your
Ethernet or Wi-Fi network, type the unit’s IP
address (see below) into your browser.
You should now see the MOTU Pro Audio
Control web app in your browser, as shown on
page 12. If not, visit Appendix A, “Trouble-
shooting” page (103).
Obtaining the 828es IP address
On the front panel of the interface, push the NET
ID button. The LCD now displays the unit’s IP
address, which should look something like this:
“IP: 192.168.1.209”.

MOTU PRO AUDIO CONTROL WEB APP
12
DEVICE TAB
96 7 11
12
5
4
3
2
1
8
18
1. If you have two or more MOTU inter-
faces,theDevices listlets youchoose
the one you are currently controlling
with the web app.
2. The Aux Mixing tab lets you view
each Aux bus in the mixer, one at a
time.
3. The Mixing tab gives you access to
the mixing and DSP in the interface.
4. The Routing tab displays a grid
matrix, where you can make direct
connections between inputs and
outputs, your computer, the mixer,
and network audio streams, if
networked interfaces are connected.
5. The Device tab has settings for the
hardwareitself,such asanalog input
and output trim.
6. Expands and collapses the sidebar.
7. Lets you create, save, recall and
manage presets for the 828es.These
presets capture and recall the
complete state of the device (all
settings in all tabs).
8. Choose the desired sample rate.
Make sure your host audio software
is set to the same rate.
9. Click to rename the interface. To
restore the default name, deletethe
current name.
10. The Quick Setup button prompts
factory presets used to configure
your interface for a specific applica-
tion. See chapter 6, “Presets”
(page 53).
11. Click this device ID button to identify
the unit you are currently viewing
and controlling with the web app
software.The front panel LCD on the
hardware itself will flash the name
of the device, and its name will also
flash in the Device list (1).
12. If an update is available for your
device, and the computer you are
viewing it from is connected to the
internet,you’llbenotified here.Click
More Info to learn what’s new and
start the update process. Firmware
updating requires a USB or network
connection to your computer. See
Appendix D, “Updating Firmware”
page (113).
13. Choose the clock source from the
Clock Mode menu. Your MOTU
device will resolve its digital clock to
this master source.
14. The Clock Status icon indicates that
the current device (1) is successfully
resolved to its chosen Clock Mode
source (13). If it cannotlock for some
reason, this icon flashes red. Check
your chosen clock source, cables, etc.
15. The Word Clock output on the your
MOTU interface can operate as an
OUT or a THRU. In addition, at higher
sample rates, itcan either follow the
system clock or operate at the corre-
sponding1x sample rate.Fordetails,
see “Daisy-chaining word clock”on
page 48.
16. If you have multiple MOTU inter-
faces, one of them may serve as a
master clock source for the network.
Click the BecomeClockMasterbutton
to choose the currentinterface (1) as
the master clock source.
17. (Windows only) Choose the Host
Buffer Size. Smaller values reduce
latency but increase yourcomputer’s
CPU load. See “Host Buffer Size”on
page 30.
18. (Windows only) Choose a Host
Safety Offset to fine tune host buffer
latency. See “Host Safety Offset”on
page 31.
19. The Input Settings section provides
gain settings for inputs and the
built-in talkback mic, plus phase
invert for the mic/guitar inputs.You
can also toggle the 48V phantom
power and -20 dB pad for the mic
inputs.
20. The Output Settings section lets you
adjust the trim for any outputs that
support it. Phones and Mainoutputs
provide full volume control. Analog
outputs provide calibration control
(-24 to 0 dB).
15
14
10
13
19
Windows only
16
17
20

MOTU PRO AUDIO CONTROL WEB APP
13
DEVICE TAB (CONTINUED)
22
Scroll down to view these additional
Device tab settings.
21. AVB is IEEE’s Audio Video Bridging
Ethernet standard for high-
bandwidth, low-latency audio
streaming over Ethernet. If your
MOTU interface is connected to a
2nd MOTU interface through its
networkport,or to an AVBswitch for
access to an extended AVB network,
you can stream audio channels to
and from other devices on the
network. AVB streams are handled
in banks of eight channels, so if you
enable2streams,that’s16channels.
See chapter 11, “Networking”
(page 95).
22. If you’ve activated one or more AVB
networkinputstreams (21), connect
them to theoutput streams of other
devices on the network here. This is
how you route audio from the other
devices to the 828es.
23. In the Input/Output Banks sections,
you can disable any banks that you
are not using. Doing so hides them
fromthe routingmatrix andmixer to
simplify operation. Doing so also
helps conserve DSP resources.
24. Configure the optical ports for either
8-channel ADAT or stereo TOSLink.
At 88.2 or 96 kHz, the ADAT setting
supports 4-channel SMUX format.
See “Optical I/O”on page 45.
25. The digital mixer in the 828es
supports up to 48 channels at 44.1
or 48 kHz. At higher sample rates,
the maximum number of supported
channels is lower, due to finite DSP
resources. If you don’t need 48
inputs (or the maximum available),
you can lower the number here to
simplify mixer and routing opera-
tion and conserve DSP bandwidth
for effects processing.
25 24
21
23

MOTU PRO AUDIO CONTROL WEB APP
14
DEVICE TAB (CONTINUED)
27
Scroll down to view these additional
Device tab settings.
26. In the Computer Setup section, you
can specify how many audio
channels you would like to be able
to stream to and from your
computer, up to 128 channels each
way, simultaneously, over USB or
Thunderbolt. Map them as desired
in the Routing tab (page 15).
27. Your MOTU interface can resolve to
SMPTE time code, also referred to as
LTC (Longitudinal Time Code), by
choosing LTC from the Clock Mode
menu (item 13 on page 12). From
the LTC Input Source menu (27
above), choose the analog or digital
input that isreceiving the time code.
If you would also like to send time
code (LTC) to the computer, where it
will be converted to MIDI Time Code
(MTC) for resolving your DAW or
other software to MTC via OS X Core
Audio (a Mac-only feature), choose
an audio channel you are not using
for other purposes from the
Computer Channel for LTC-to-MTC
Conversion menu; otherwise,leaveit
set to None. Choose the desired
frame format, or use the Enable
Format Autodetect to automatically
detect the frame format of the
incoming time code. When Enable
Jam Sync is turned on, your interface
will continue to operate under its
own clock and continue LTC-to-MTC
conversion, even after it stops
receiving time code. Click Stop Jam
Sync to exit this mode. For further
details about time code sync, see
“Syncing to SMPTE time code (LTC)”
on page 48 and “LTC-to-MTC conver-
sion”on page 69.
28. Usethese buttonstomanually check
for and install updates for your
MOTU interface. For complete
details, see Appendix D, “Updating
Firmware”page (113). Updating
from a file can be done off line from
your computer, using an update
you’ve obtained through MOTU’s
web site or tech support depart-
ment. The Check For Updates button
requires that the computer (or
device) you are using to view your
MOTU interface is connected to the
internet through a local network or
Wi-Fi. Updating from the internet is
easy and convenient.
29. Use Set Password to password-
protect the interface on the
network. All settings are blocked,
except for aux bus mixing, as shown
above (29). This allows musicians to
access their personal monitor (aux)
mixes from their mobile devices,
while all other device settings
remain blocked.To clear the
password, log in and then click Clear
Password. If you forget the
password, you can clear it in the
Settingsmenu in thefront panel LCD
(see page 59) with either the Clear
Password setting or by doing a
factory reset with the Factory
Default setting.
30. The System Information section
displays information about your
MOTU device, including the
firmware version and network IP
address.
31. Use Restore Factory Presets to restore
your MOTU device’s factory presets.
32. Click Reboot to restart the interface.
33. Choose the outputs you would like
to use for the front panel monitor
controls (Monitor A/B switches,
Mute and Mono). You can also
control these functions here in the
web app with the controls provided.
See “Talkback”on page 60.
34. Enable the Foot Switch input here. In
each text box, type the keystroke
you wish to trigger from your foot
pedal. Click ‘X’to clear the text box.
35. When the Computer Volume Controls
option is enabled (a Mac only
feature), the Audio MIDI Setup
utility in OS X provides volume
control for each output channel to
your MOTU audio interface. In
addition, the volume controls for
your Mac (on your computer
keyboard) will control the channels
you’ve designated for computer
output in Audio MIDI Setup, if any.
Be careful when toggling this
setting because sudden changes in
your computer volume can result.
34
29
26
30
32
35
28
31
33

MOTU PRO AUDIO CONTROL WEB APP
15
ROUTING TAB
64 8
13
3
2
14
The RoutingTab lets you route inputs to
outputs.Outputs are listedbyrowon the
left; inputs are listed in columns across
the top. Simply click in the grid to make
a single connection. Click and drag to
make multiple connections in one
gesture.To route a single input to
multiple outputs, make multiple
connections vertically in the same
column belowthe input.To mix multiple
inputs to the same output, you’llneed to
use the mixer (page 16) and the Mix In
bank in the routing tab (18).
1. In its collapsed form, (shown here),
the sidebar displays icons for each
tab.
2. Click this icon to view the Routing
tab, shown on this page.
3. Click here to show or hide the
sidebar.
4. Create, save, recall and manage
routing presets.
5. Locks the grid to prevent accidental
changes. Unlock to make changes to
the grid.
6. Outputs are listed in rows on the left.
7. When you make a connection, the
source (input) signal is listed by
name here in the Source column,
just to the right of the output it is
being routed to.
8. Inputs are listed in columns across
the top of the grid, starting with the
physical inputs on the hardware
itself. In this example, the analog
inputs and S/PDIF digital inputs are
being routed to the computer over
Thunderbolt (TB).
9. The From Computer input bank lets
you route audio channels from your
host audio software to any output,
including AVB network streams or
the mixer, where you can mix
computer audio with local inputs.
Use the Device tab to choose how
many computer channels are avail-
able.
10. AVB streams are 8-channel banks
that let you route audio to or from
other devices on the AVB network (if
any are connected) to local
hardware inputs and outputs. In this
example, 8 channels of audio from a
MOTU 1248 interface are available.
The first four are being routed to the
computer. Use the Device tab
(page 13) to configure how many
AVB streams you wish to work with.
If you aren’t working with network
audio, you can set the number of
streams to zero to hide them from
this grid (and the mixer).
11. These input streams are buses that
originate from the mixer, which
supplies the main mix bus, monitor
mix bus, seven stereo aux buses,
three stereo group buses, a reverb
returnbusand postFXchannel sends
(for sending processed inputs to the
computer or elsewhere). You can
route these mixer buses to any
outputs you wish (6), including
physical outputs, host software on
your computer, other devices on the
AVB network, or even back in to the
mixer (beware of feedback loops!)
12. Use these two columns to route the
talkback mic and time code input to
any desired outputs. In this
example, time code is being routed
from the LTC input directly to the
output.
13. Use these triangles to expand or
collapse groups of inputs. For
example, it might be convenient to
collapse banks that you are not
using at the moment.
14. Click a channel label to rename it.
15. Audio activity indicators.
16. Here, the Monitor bus from the
mixer is being routed to analog
outputs 1-2 (the Monitor B pair) on
the 828es.
17. Click the grid to make a connection.
Click a connection to remove it. Click
and drag to make or break multiple
connections in one gesture.
18. The MixIn grouplets yourouteaudio
to the 48-channel mixer.
19. AVB output streams let you route
any audio to other devices on the
AVB network.
20. The To Computer output bank routes
any input to host audio software
running on your computer. Use the
Device tab to choose how many
computer channels are available.
21. These are the physical outputs on
the interface itself.
22. Use these triangles to expand or
collapse groups of outputs.
23. Indicate the outputs designated for
A/B monitor switching (item #33 on
page 14 and item #8 on page 9).
1
7
17
910 11
15
18
16
5
19
22
20
21
23
12

MOTU PRO AUDIO CONTROL WEB APP
16
MIXING TAB
The Mixing tab gives you full access to
the 48-channel mixer in the 828es,
which provides a main mix bus, monitor
bus, three group buses, seven aux buses,
and a dedicated reverb bus. Use the
Device tab to configure how many
inputs you wish to work with (up to 48).
Use the Routing tab (page 15) to route
channels to the mixer inputs. Channels
can come from any source, such as the
physical inputs on the interface,
channels coming from the computer, or
channels coming from the AVB network.
1. Shows and hides the Mixer Setup
sidebar (3), which lets you show and
hide channels, channel strip
settings, effects, and the Legend (6).
2. The Mixing tab selects the mixer.
3. Use the Mixer Setup sidebar to show
and hide elements in the mixer.
4. Shows and hides all elements in the
section with one click.
5. Create, save, recall and manage
mixer presets.
6. This column is the Legend. It
provides labels and controls for
channel strip sections. The menu at
the top lets you create, name, save
and manage entire mixer presets.
7. Mixer input channels.
8. This input channel has an EQ shelf
filter enabled.
9. This is Group bus 1-2. You can send
inputs to this group with their Group
send fader (25). Groups are sent to
the Main Mix with its Main send
fader (24) or aux buses (19).
10. Group buses, the main mix bus, and
the reverb return bus are equipped
with the Leveler, a vintage compres-
sor modeled after theTeletronix
LA-2A leveling amplifier.
11. The reverb channel strip provides
the reverb processor. Use the reverb
send on inputs or groups to route
them to the reverb bus, which can
then be mixed in with the main mix
or aux busses. Disable the reverb
processor to use it as an extra group.
12. The Monitor Bus can mirror the
output of any other bus, or it can act
as a separate Solo bus. See page 19.
13. The Main Mix bus is the master fader
for the entire mixer. You can add EQ
and Leveler compression.
14. You can adjust Aux bus output levels
here, or inthe Aux Mixing tab shown
on page 17.
15. Click a name to change it, except for
the Main Mix, Monitor, and Reverb
busses, which cannot be changed.
16. Stereo toggle to switch channels
pairs between mono or stereo. Use
the other menus to manage channel
strip presets and to choose audio
sources and destinations for mixer
inputs and bus outputs.
17. Click the thumbnail EQ graph to
open the full-size, editable EQ graph
(Figure 9-4 on page 73).
18. The Dynamics section provides a
conventional compressor for inputs
and the Leveler for output busses.
19. Reverb and aux sends.
20. Solo and mute. On the Monitor bus,
the SC button clears all solos.
21. Channel faders.
22. Choose the source for the Monitor
bus from this menu. It can mirror
any output bus or the Solo Bus.
23. When Follow Solo is enabled, the
Monitor bus temporarily switches to
the solo bus when any channel is
soloed.
24. Main Mix sends.
25. Group sends.
26. See “Talkback setup”on page 60.
27. See “Talkback settings”on page 61.
28. ‘S’lets you solo the group. ‘PRE’
toggles the sends between pre- and
post-fader routing, i.e. before or
after the channel fader.
29. Show and hide output busses here.
30. Show/hide all busses with one click.
31. Same as (28) above.
32. Show and hide inputs here.
33. Show/hide all inputs with one click.
93 13 14
15
2
1
19
20
67810 11 12
16
21
24
29
30
32
33
28
31
17
22
23
4 5
25
18
26
27

MOTU PRO AUDIO CONTROL WEB APP
17
AUX MIXING TAB
53 7
9
2
1
10
11
The Aux Mixing tab provides quick
access to the 828es mix buses (aux
buses, groups and reverb bus), viewed
one at a time. Choose a bus in the Aux
Mix Target section (3) and then use the
faders to directly mix the send levels
from all mixer inputs, groups, and the
reverb bus.
1. Shows and hides the Mixer Setup
sidebar (3), which lets you show and
hide channels.
2. The Aux Mixing tab (shown on this
page) gives you access to the Aux
busses and groups in the mixer.
3. Use the Aux Mix Target sidebar to
control which aux bus or group you
are currently viewing.You can also
show/hide inputs and group sends.
4. Click the aux bus or group you wish
to view in the window. In this
example, Aux bus 1-2 is being
displayed.
5. These are mixer inputs (aux sends
from each mixer channel). To
include an input in the aux bus mix,
simply bring up its fader.
6. These are group bus faders.
7. This is the mixer’s reverb bus fader.
8. This is the master fader for the
current aux bus being viewed (4).
9. Indicates if the input or group is
stereo or mono. This indicator is for
display purposes only.To toggle
between mono and stereo opera-
tion, use the toggle switch in the
Mixing tab (item #16 on page 16).
10. Solo and mute for the aux bus
master fader. The mute buttons for
the input channels and other buses
are for display purposes only, so that
you can see if they are muted or not
(in the mixer).
11. Shows and hides the pan controls for
aux bus inputs.
12. When Prefader is enabled, all send
levels to the aux bus are indepen-
dent of the main fader for each
channel. In other words, changing
anindividual channel’smainfader in
the Mixing tab won’t affect its send
level to the aux bus.
13. Click the View Personal Mix button to
open a new web page that displays
only that specific Aux Mix or Group.
14. Show and hide mix groups and the
reverb bus here.
15. Use the Groups button here to show
or hide all groups with one click.
Drag this section divider vertically to
resize the list.
16. Show and hide mixer inputs
(channel sends) here.
17. Show and hide all mixer inputs with
one click here. Drag this section
divider vertically to resize the list.
8
17
16
15
14
4
12
13
6

MOTU PRO AUDIO CONTROL WEB APP
18
MIXER INPUT CHANNEL STRIPS
To access a mixer input channel strip, go to
the Mixing tab (page 16), reveal the side bar
(item #3 on page 16), and show the input
channel in the Mixer Inputs section (32). 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 Mixing
tab on page 16).
1. Click the input channel name to change
it. Delete the current name to restore the
default name.
2. Provides hardware settings for inputs, if
any, such as preamp gain. If there are no
hardware settings for the assigned input,
this icon is grayed out. If the channel has
been assigned to an input on another
AVBdeviceon the audionetwork, youcan
use these settings to control it remotely.
3. Choose the source for the input channel.
You can also make this setting directly on
the Routing grid (page 15).
4. Create 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 thumbnail EQ Graph displays the
currently enabled EQ filters, if any. Click it
to open the full-size, editable EQ Graph
(Figure 9-4 on page 73).
13. 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 use RMS
values (a computational method for
determining overall loudness) for the
input level. Engage Auto makeup gain to
compensate for any gain reduction.
14. Input level and gain reduction meters for
the compressor.
15. The thumbnail Compressor Graph
provides a graphic representation of the
compressor, when enabled. Click it to
open the full-size, editable Compressor
Graph (Figure 9-6 on page 74).
16. Aux 1-2 send.
17. Pan for the Aux 1-2 send. This is enabled
in the Aux mix tab (item #11 on page 17).
18. Solo/Mute. Mute affects all sends as well
as the main channel. Pre-fader sends are
not affected by Mute.
19. Move the fader to adjust level. Double-
click to return to zero (unity gain) or -×.
20. 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.
21. Click to type in an exact dB level.
22. Channel pan. For mono inputs, double-
click to center.
23. Main Mix Slider feeds 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.
24. Group sends.
25. Makes the input the source for talkback.
26. See “Talkback settings”on page 61.
27. ‘S’lets you solo the group. ‘PRE’toggles
the sends between pre- and post-fader
routing, i.e. before or after the channel
fader. PAN enables pan for group sends.
28. The input level meter (behind the fader
handle, 19) can display either pre- or
post-fader levels.Toggle here.
29. Clears all solos.
30. ‘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.
31. 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 Mixing tab on
page 16).
32. 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 77
for more info.
6
32
31
29
30
2 3 4 5
7
27
9
8
10
11
13
14
16
18
19
20
21
22
24
3
4
23
2
12
12
15
17
28
1
25
26

MOTU PRO AUDIO CONTROL WEB APP
19
MAIN MIX AND MONITOR CHANNEL STRIPS
To access the Main Mix and Monitor bus
channel strips, go to the Mixing tab
(page 16) and scroll the display to the
right, beyond the inputs and groups.
To show and hide sections of the channel
strip, such as EQ or the Leveler, use the
Controls section of the side bar (item #3 in
the Mixing tab on page 16).
1. By default, the Monitor bus serves as
a solo bus. However, it can be set to
mirror the main mix bus, or any other
aux bus, group, or the reverb bus, in
addition to monitoring solo. Make
this choice in the source menu (13).
Use the Routing grid (page 15) to
specify the output for the Monitor
bus.
2. The Main Mix bus is the primary
stereo mix.
3. Provides hardware settings for any
assigned outputs that have them. For
example, if the Main Mix bus is
assigned to the Main Outs on the
828es, you’ll see trim settings for the
outputs.This item is grayed out if
there are no hardware settings for
output.
4. Use this output assignment widget to
choose the destination — or multi-
ple destinations — for the bus.You
can also make this setting directly on
the Routing grid (page 15).
5. Use the preset menus to create save,
recall, and otherwise manage
channel strip presets for the Monitor
bus and Main Mix bus.
6. Indicates that the bus is stereo.
7. The four-band parametric EQ for the
Main Mix bus operates the same as
described for input channels (items
10 and 11 on page 18), including
High and Low Shelf filter options.
8. The thumbnail EQ Graph displays the
currently enabled EQ filters, if any.
Click it to open the full-size, editable
EQ Graph (Figure 9-4 on page 73).
9. The Leveler provides specialized gain
reduction modeled after the legend-
ary Teletronix LA-2A Leveling Ampli-
fier. For complete details, see
“Leveler”on page 75.
10. Mutes for the Main Mix bus and
Monitor bus.
11. Master faders for the Main Mix bus
and Monitor bus. Use the same
techniques described for input
channel faders (items 19, 20 and 21
on page 18).
12. When Follow Solo is enabled, the
Monitor bus switches to the solo bus
when any channel is soloed. NOTE: if
anaux bus is soloed, thenthe Monitor
bus carries only the soloed aux bus
(any current channel solos are
excluded).
13. Choose the source for the Monitor bus
from this menu. It can mirror the
main mix, any aux bus, group, the
reverb bus, or it can serve only as a
Solo bus.
14. The SC button clears all solos.
15. This mid-band EQ is currently
disabled (and therefore grayed out).
1
5
14
7
9
10
11
13
12
2
15
3 4 5 6
3 4
8

MOTU PRO AUDIO CONTROL WEB APP
20
AUX BUS CHANNEL STRIPS
Aux buses can be used to create sub-mixes. An
aux bus can be assigned to any output in the
Routing grid (page 15).
To access an Aux bus channel strip, go to the
Mixing tab (page 16), reveal the side bar (item #3
on page 16), and then show the aux buses you
want in the Mixer Outputs section (29).
To show and hide the four-band EQ section of the
channel strip, use the Controls section of the side
bar (item #3 in the Mixing tab on page 16).
1. A stereo aux bus.
2. A mono aux bus.
3. Click this dot to toggle an aux bus between
mono and stereo.
4. The four-band parametric EQ module for Aux
buses operates the same as described for
input channels (items 10 and 11 on page 18),
including High and Low Shelf filter options.
5. The thumbnail EQ Graph displays the
currently enabled EQ filters, if any. Click it to
open the full-size, editable EQ Graph
(Figure 9-4 on page 73).
6. Aux bus solo and mute.
7. Aux bus master fader.
8. Click to type specific value manually.
9. Click to route the talkback mic to the aux bus
output.
10. Click the dB scale numbers to make the fader
jump exactly to that level. Click and drag
horizontallytojump consecutivefaders tothe
same level.
11. A disabled EQ band.
12. Use these menus (hardware settings, output
assignment, and presets) in a similar fashion
as described for the Main Out bus (items 3-5
on page 19).
1
3
11
4
6
7
8
10
2
12
5
9