MOTU UltraLite-mk4 User manual

™
UltraLite- mk4
User Guide
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

SAFETY PRECAUTIONS AND ELECTRICAL REQUIREMENTS FOR THE UltraLite-mk4 (“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 SERVICING
TO QUALIFIED SERVICE PERSONNEL.
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’s instructions.
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.Power supply cord - Protect the product power supply cord from being walked on or pinched by items placed upon or against them.
11.Power switch - Install the product so that the power switch can be accessed and operated at all times.
12.Disconnect - The main power supply plug is considered to be the disconnect device for the product and shall remain readily operable.
13.Accessories - Only use attachments/accessories specified by the manufacturer.
14.Surge protection - Unplug the product during lightning storms or when unused for long periods of time.
15.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.
16.Power Sources - Refer to the manufacturer’s operating instructions for power requirements.
17.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.
18.Power amplifiers- Never attach audio power amplifier outputs directly to any of the unit’s connectors.
19.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.
20.Safety Check - Upon completion of any service or repairs to this MOTU product, ask the service technician to perform safety checks to
determine that the product is in safe operating conditions.
ENVIRONMENT, HEAT AND VENTILATION
Operating Temperature: 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 space around 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 supply with wet hands. Do not pull on the power supply 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.
DC INPUT
10 - 24V DC • 1.0A max

III
Contents
Part 1: Getting Started
7
Quick Start Guide
9
UltraLite-mk4 Front Panel
10
UltraLite-mk4 Rear Panel
11 MOTU Pro Audio Control Web App
23
About the UltraLite-mk4
25 Packing List and System Requirements
27
Software Installation
31
Hardware Installation
Part 2: Using the UltraLite-mk4
39
Presets
43
The Front Panel LCD
45 Working with Host Audio Software
53
Mixer Effects
61
MOTU Audio Tools
Part 3: Appendices
79
Troubleshooting
81
Audio Specifications
83 Mixer Schematics
87
Updating Firmware
89
Auto-on Mode
91
Index

About the Mark of the Unicorn License Agreement and
Limited Warranty on Software
TO PERSONS WHO PURCHASE OR USETHIS 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 are protected 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 running the 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 only
one computer at a time and that you remove any copies of the program from the
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 other rights 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 of purchase 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
Limited Warranty.
THIS LIMITED WARRANTY AND RIGHT OF REPLACEMENT IS IN LIEU OF,
AND YOU HEREBY WAIVE, ANY AND ALL OTHER WARRANTIES, BOTH
EXPRESS AND IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.THE
LIABILITY OF MOTU PURSUANT TO THIS LIMITED WARRANTY SHALL BE
LIMITED TO THE REPLACEMENT OF THE DEFECTIVE DISK(S), AND IN NO
EVENT SHALL MOTU OR ITS SUPPLIERS, LICENSORS, OR AFFILIATES BE
LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING
BUT NOT LIMITED TO LOSS OF USE, LOSS OF PROFITS, LOSS OF DATA OR
DATA BEING RENDERED INACCURATE, OR LOSSES SUSTAINED BY THIRD
PARTIES EVEN IF MOTU HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS
WHICH MAY VARY FROM STATE TO STATE. SOME STATES DO NOT ALLOW
THE LIMITATION OR EXCLUSION OF LIABILITY FOR CONSEQUENTIAL
DAMAGES, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
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 © 2016 by Mark of the Unicorn, Inc. All rights reserved. No part of this
publication may be reproduced, transmitted, transcribed, stored in a retrieval system,
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
against defects in materials and workmanship for a period of TWO (2)YEARS from
the 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
obtain a Return Merchandise Authorization 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 insure the shipment for the value of the product. Please
include your name, address, telephone number, a description of the problem, and
the 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.
This warranty does not apply if the equipment has been damaged by accident,
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 IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED IN DURATION TO TWO (2) YEARS FROM THE DATE OF THE
ORIGINAL RETAIL PURCHASE OF THIS PRODUCT.
THE WARRANTY AND REMEDIES SET FORTH ABOVE ARE EXCLUSIVE
AND IN LIEU OF ALL OTHERS, ORAL OR WRITTEN, 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 OF
WARRANTY, OR UNDER ANY LEGAL THEORY, INCLUDING LOST PROFITS,
DOWNTIME, GOODWILL, DAMAGE OR REPLACEMENT OF EQUIPMENT
AND PROPERTY AND COST OF RECOVERING REPROGRAMMING, OR
REPRODUCING ANY PROGRAM OR DATA STORED IN OR USED WITH
MOTU/S&S PRODUCTS.
Some states do not allow the exclusion or limitation of implied warranties or liability for
incidental or consequential damages, so the above limitation or 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 the Thunderbolt 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

CHAPTER
7
Quick Start Guide
Thank you for purchasing an UltraLite-mk4!
Follow these easy steps to get started quickly.
1Download and run the MOTU Pro Audio
Installer found here:
http://www.motu.com/download
2(Optional) For quick access to the
UltraLite-mk4 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).
4Switch on the UltraLite-mk4.
5Open the MOTU Pro Audio Control web app by
doing one of the following:
■Choose the UltraLite-mk4 from the MOTU
Discovery app menu (found in the Mac menu bar
or Windows taskbar).
■Alternately,you can launch the MOTU ProAudio
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 79).
6Click Quick Setup and choose a preset.
MOTU Discovery app menu
Preset Application
Audio interface Operate as a standard audio interface.
Stand-alone mixer Operate as a stand-alone mixer, where all
inputs are mixed to the main outs and mon-
itor outs.
Interface + mixer A combination of the above two presets.
Liverecording with
monitor mixing
Record a live concert or recording session,
with a full monitor mix.
Optical Converter Multi-channel analog-to-digital and digi-
tal-to-analog converter.

8

UltraLite-mk4 Front Panel
1. MIC/GUITAR INPUTS.These XLR/TRS combo jacks accept
either a mic cable or a quarter-inch cable,balanced or
unbalanced,from a guitar or line input.Use the controls
to the right (3) to adjust individual preamp gain,instru-
ment input trim,48V phantom power,and an optional
-20 dB pad for each mic input.
2. HEADPHONE OUTPUT with volume control.
3. Individual PREAMP GAIN,INSTRUMENT INPUT TRIM,
switchable 48V phantom power,and optional -20 dB
pad switches for each combo input.The Precision
DigitalTrim™ knob provides +60 dB of preamp gain or
+30 dB of instrument input gain.Both gain settings are
retained independently.Turn the knob to see the gain
adjustments in the LCD.
4. This portion of the LCD displays level meters for all
analog inputs and outputs.It can also show device
settings,using the knobs to the left.
5. This portion of the multi-purpose backlit LCD shows
digital I/O activity (optical and S/PDIF) and MIDI activ-
ity (in and out).
6. This portion of the LCD displays the current sample rate
and clock source,such as Int (Internal clock mode).
7. Push SELECT to enter the LCD menu.Turn SELECT to
scroll through menu options.Push again to descend
into the submenus,if applicable.To choose the current
setting,push SELECT a third time.Push BACK to return
to the previous menu level,and do so repeatedly to exit
the menu altogether.
8. POWER andVOLUME control for phones and main outs.
Push this knob to toggle between PHONE volume and
MAIN OUT volume.The LCD provides visual feedback.
This setting,along with all front panel settings,can also
be adjusted from the MOTU Pro Audio Control web app.
Push to power on the unit;push and hold for three
seconds to power it off.
78
2 3 5
6
1 4

UltraLite-mk4 Rear Panel
1. The UltraLite-mk4 operates as a USB MIDI interface,allow-
ing MIDI software to communicate with connected MIDI
devices through the USB connection to the computer.
Connect a MIDI device here using standard MIDI cables.
Connect the UltraLite-mk4’s MIDI OUT port to the MIDI IN
port on the other device.Conversely,connect the
UltraLite-mk4’s MIDI IN port to the MIDI OUT port on the
other device.For further details,see “MIDI connections”on
page 35.
2. The ANALOG OUTPUTS provide additional analog output for
secondary studio monitors,surround monitoring,sub-
mixes or any other desired destination.These connectors
are balanced (tip/ring/sleeve),but they also accept an
unbalanced plug.They are DC-coupled.Control volume
from the MOTU Pro Audio Control web app or your host
audio software.
3. The MAIN OUT pair provides stereo analog output for
primary (powered) studio monitors or PA speakers,or any
other desired destination.Control volume from the MOTU
Pro Audio Control web app or from the front panel volume
control.
To hear audio playback from your host audio software 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 UltraLite-mk4 inputs here as well.
4. Equipped with very high quality 24-bit 192 kHz converters,
these six analog inputs are balancedTRS (tip/ring/sleeve)
quarter-inch connectors that can also accept an unbal-
anced plug (with the ring disconnected).Use them for
keyboards or other line level analog sources.These inputs
are equipped with the UltraLite-mk4’s Precision Digital
Trim™ feature:digitally controlled analog trims that let you
adjust input level in 1 dB increments from the MOTU Pro
Audio Control web app.
5. 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 “S/PDIF”on page 34.
6. These ADAT optical“lightpipe”jacks 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 stereo TOSLink (optical S/PDIF) connectors.
Visit the Device tab in the web app (page 14) to configure
the optical jacks.
7. Connect the UltraLite-mk4 to the computer here using a
standard USB cable.
8. This jack accepts any standard 12-18V DC power supply
(1.0A max) with either tip-positive or tip-negative polarity.
4
8
1 2 3
7 6 5

CHAPTER
11
MOTU Pro Audio Control Web App
OVERVIEW
MOTU Pro Audio Control is a web app that gives
you complete control over the UltraLite-mk4.
IT’S NOT ON YOUR HARD DRIVE
The MOTU Pro Audio Control web app is served
from the UltraLite-mk4 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 ProAudio Control web app runs in any
modern web browser running on the computer
connected to the UltraLite-mk4, or any mobile
device (tablet or smartphone) on the same Wi-Fi
network as the computer. 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 download the discovery app onto
your iPad or iPhone.
MAKE HARDWARE AND NETWORK
CONNECTIONS
Connect your UltraLite-mk4 to your computer or
laptop with a USB cable. Make sure your iPad,
iPhone, tablet or smartphone is connected to the
same Wi-Fi network as your computer or device.
LAUNCHING THE WEB APP
To launch the web app, do any of the following:
■Choose the UltraLite-mk4 from the MOTU
Discovery app menu (in the Mac menu bar or
Windows taskbar) 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.
You should now see the MOTU Pro Audio Control
web app in your browser, as shown on page 12. If
not visit Appendix A,“Troubleshooting” (page 79).
MOTU Discovery app menu

MOTU PRO AUDIO CONTROL WEB APP
12
DEVICE TAB
8
6710
11
5
4
3
2
1
17
1. If you have two or more MOTU inter-
faces,the Devices list lets you choose
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 and the
mixer.
5. The Device tab has settings for the
hardware itself,such as analog input
and output trim.
6. Expands and collapses the sidebar.
7. Lets you create, save,recall and
manage presets for the
UltraLite-mk4.These presets
capture and recall the complete
state of the device (all settings in all
tabs).
8. Click to rename the interface.To
restore the default name,delete the
current name.
9. The Quick Setup button prompts
factory presets used to configure
your interface for a specific applica-
tion.See chapter 5,“Presets”
(page 39).
10. 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).
11. If an update is available for your
device,and the computer you are
viewing it from is connected to the
internet,you’ll be notified here.Click
More Info to learn what’s new and
start the update process.See
Appendix D,“Updating Firmware”
(page 87).
12. Choose the desired sample rate.
Make sure your host audio software
is set to the same rate.
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 cannot lock for some
reason,this icon flashes red.Check
your chosen clock source,cables,etc.
15. (Windows only) Choose the Host
Buffer Size.Smaller values reduce
latencybut increaseyourcomputer’s
CPU load.See “Host Buffer Size”on
page 28.
16. (Windows only) Choose a Host
Safety Offset to fine tune host buffer
latency.See “Host Safety Offset”on
page 28.
17. The Input Settings section provides
gain settings for inputs,plus phase
invert for mic and guitar inputs,if
any.You can also toggle the 48V
phantom power and -20 dB pad for
the mic inputs.
18. The Output Settings section lets you
adjust the trim for any output or
output pair which supports it.
Phones and Main outputs provide
full volume control.Analog outputs
provide calibration control (-24 to 0
dB).
15
14
9
13
18
12
Windows only 16

MOTU PRO AUDIO CONTROL WEB APP
13
DEVICE TAB (CONTINUED)
Scroll down to view these additional
Device tab settings.
19. In the Input/Output Banks sections,
you can disable any banks that you
are not using.Doing so hides them
fromthe routing matrix andmixerto
simplify operation.Doing so also
helps conserve DSP resources.
20. The digital mixer in the
UltraLite-mk4 supports up to 48
channels.If you don’t need that
many inputs,you can lower the
number here to simplify mixer and
routing operation and conserve DSP
bandwidth for effects processing.
21. Configure the optical ports for either
8-channel ADAT or stereoTOSLink.
At 88.2 or 96 kHz,the ADAT setting
supports 4-channel SMUX format.
See “Optical I/O”on page 34.
19
21
20

MOTU PRO AUDIO CONTROL WEB APP
14
DEVICE TAB (CONTINUED)
23
Scroll down to view these additional
Device tab settings.
22. In the Computer Setup section, you
can specify how many audio
channelsyou would like tobeable to
stream to and from your computer,
up to 24 channels each way,simul-
taneously.Map them as desired in
the Routing tab (page 15).
23. Your MOTU interface can resolve to
SMPTE time code,also referred to as
LTC (LongitudinalTime Code),by
choosing LTC from the Clock Mode
menu (item 13 on page 12).From
the LTC Input Source menu (23
above),choose the analog or digital
input that is receiving the time code.
If you would also like to send time
code (LTC) to the computer, where it
will be converted to MIDITime 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,leave it
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 35 and “LTC-to-MTC conver-
sion”on page 51.
24. Use Restore Factory Presets to restore
your MOTU device’s factory presets.
25. Use Set Password to password-
protect the interface.All settings are
blocked,except for aux bus mixing,
as shown above (25).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
Settings menuinthe frontpanelLCD
(see page 44) with either the Clear
Password setting or by doing a
factory reset with the Factory
Default setting.
26. The System Information section
displays information about your
MOTU device,including the
firmware version.
27. Usethese buttonstomanually check
for and install updates for the
UltraLite-mk4.For complete details,
see Appendix D,“Updating
Firmware”(page 87).Updating from
a file can be done offline from your
computer, using an update you’ve
obtained through MOTU’s web site
or tech support department.The
Check For Updates button requires
that the computer (or device) you
are using to view the UltraLite-mk4
is connected to the internet through
a local network or Wi-Fi.Updating
from the internet is easy and conve-
nient.
28. Click Reboot to restart the interface.
29. When the ComputerVolume 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.
28
25
22
26
27
24
29

MOTU PRO AUDIO CONTROL WEB APP
15
ROUTING TAB
64 8
11
3
2
12
The RoutingTab lets you route inputs to
outputs.Outputs are listed by row on 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 multi-
ple outputs,make multiple connections
vertically in the same column below the
input.To mix multiple inputs to the
same output,you’ll need to use the
mixer (page 16) and the Mix In bank in
the routing tab (16).
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 two mic
inputs and six analog (line) inputs
are being routed to the computer
(over USB).
9. The From Computer input bank lets
you route audio channels from your
host audio software to any output,
including the mixer, where you can
mix computer audio with local
inputs.Use the Device tab to choose
how many computer channels are
available.In this example,computer
channels 1-2 are being routed to
both the headphone output and the
Main Outs (L-R).
10. These input streams are busses that
originate from the mixer,which
supplies the main mix bus,monitor
mix bus,seven stereo aux busses,
three stereo group busses,a reverb
returnbus and postFXchannel sends
(for sending processed inputs to the
computer or elsewhere).You can
route these mixer busses to any
outputs you wish (6),including
physical outputs,host software on
your computer, or even back in to
the mixer (beware of feedback
loops!)
11. 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.
12. Click a channel label to rename it.
13. Audio activity indicators.
14. Here,Computer channels 1-2 are
being routed to the Main Outs on
the UltraLite-mk4.
15. 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.Note:
both the input and output must be
expanded or collapsed (11) when
clicking to make a connection.
16. TheMix In grouplets you route audio
to the 48-channel mixer.
17. The To Computer output bank
(currently collapsed in this example)
routes any input to host audio
software running on your computer.
Use the Device tab to choose how
many computer channels are avail-
able.
18. Use these triangles to expand or
collapse groups of outputs.
19. These represent the physical analog
outputs on the interface itself.
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MOTU PRO AUDIO CONTROL WEB APP
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MIXING TAB
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The Mixing tab gives you access to the
48-channel mixer in the UltraLite-mk4,
which provides a main mix bus,monitor
bus,three group busses,seven aux
busses,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 or
channels coming from the computer.
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 its Gate and
Compressor enabled.Disabled
effects are grayed out.
9. This is Group bus 1-2.You can send
inputs to this group with their Group
send fader (26).Groups are sent to
the Main Mix with its Main send
fader (25) or aux busses (20).
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 in the 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. Gate processing for inputs.
18. Click the thumbnail EQ graph to
open the full-size,editable EQ graph
(Figure 8-4 on page 55).
19. The Dynamics section provides a
conventional compressor for inputs
and the Leveler for output busses.
20. Reverb and aux sends.
21. Solo and mute.On the Monitor bus,
the SC button clears all solos.
22. Channel faders.
23. Choose the source for the Monitor
bus from this menu.It can mirror
any output bus or the Solo Bus.
24. When Follow Solo is enabled,the
Monitor bus temporarily switches to
the solo bus when any channel is
soloed.
25. Main Mix sends.
26. Group sends.
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.
28. Show and hide output busses here.
29. Show/hide all busses with one click.
30. Same as (27) above.
31. Show and hide inputs here.
32. Show/hide all inputs with one click.
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MOTU PRO AUDIO CONTROL WEB APP
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AUX MIXING TAB
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The Aux Mixing tab provides quick
access to the UltraLite-mk4’s mix busses
(aux busses,groups and reverb bus),
viewed one at a time.Choose a bus in
the Aux MixTarget section 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 MixTarget 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.
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
an individual channel’s main fader
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
displaysonly thatspecificAux Mixor
Group.This is perfect for musicians
who want to control their own
monitor mix.
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 to show
more or less of the group 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 to show more or less of the
mixer input list.
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MOTU PRO AUDIO CONTROL WEB APP
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MIXER INPUT CHANNEL STRIPS
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To access a mixer input channel strip,go to
the Mixing tab (page 16),reveal the side bar
(item #3 on page 16),and then show the
input channel you want in the Mixer Inputs
section (31).
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.
3. Choose the source for the input channel.
You can also make this setting directly on
the Routing grid (page 15).
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. Eacheffect in thechannel 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 8-4 on page 55).
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 uses
RMS values (a computational method for
determining overall loudness) to
measure the input level.
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 8-6 on page 56).
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 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 eventu-
ally be fed to the Main Mix),drag the
slider to -∞so it is not sent to Main Mix
directly.
24. Group sends.
25. ‘S’lets you solo the group.‘PRE’toggles
the sends between pre- and post-fader
routing,i.e.before or after the channel
fader.
26. The input level meter (behind the fader
handle,19) can display either pre- or
post-fader levels.Toggle here.
27. Clears all solos.
28. ‘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.
29. 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).
30. 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 59
for more info.
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MOTU PRO AUDIO CONTROL WEB APP
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MAIN MIX AND MONITOR CHANNEL STRIPS
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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,if the
assigned output pair has them.For
example,if the Main Mix bus is assigned
to the Main Outs on the UltraLite-mk4,
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 multiple
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 8-4 on page 55).
9. The Leveler provides specialized gain
reduction modeled after the legendary
Teletronix LA-2A Leveling Amplifier.For
complete details,see “Leveler”on
page 57.
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 an
aux bus is soloed,then the 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).
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MOTU PRO AUDIO CONTROL WEB APP
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AUX BUS CHANNEL STRIPS
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Aux busses 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 busses you want in
the Mixer Outputs section (28).
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
busses operates the same as described for input
channels (items 10 and 11 on page 18),includ-
ing 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 8-4 on page 55).
6. Aux bus solo and mute.
7. Aux bus master fader.
8. Click to type specific value manually.
9. 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.
10. A disabled EQ band.
11. 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).
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