Instrukcja obsługi Motu 8M

Motu system hi-fi 8M

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™
1248
User Guide
1280 Massachusetts Avenue
Cambridge, MA 02138
Business voice: (617) 576-2760
Business fax: (617) 576-3609
Web site: www.motu.com
Tech support: www.motu.com/support
™
8M
™
16A
MOTU AVB Switch™
SAFETY PRECAUTIONS AND ELECTRICAL REQUIREMENTS FOR THE 1248, 8M, 16A, and MOTU AVB SWITCH (“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 REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
WARNING: DO NOT PERMIT FINGERS TO TOUCH 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 REMOVE
OR ALTER THE 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 the TWO prong outlet with a properly grounded THREE 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 is properly grounded, have it checked by a qualified electrician. NOTE: The adapter illustrated is for 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’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. Grounding - Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. 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 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 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
91248 Front Panel
10 1248 Rear Panel
11 8M Front Panel
12 8M Rear Panel
13 16A Front Panel
14 16A Rear Panel
15 MOTU AVB Switch
17 MOTU AVB Control Web App
27 About Your MOTU AVB Audio Interface
31 Packing List and System Requirements
33 Software Installation
37 Hardware Installation
Part 2: Using your MOTU interface
57 Presets
61 The Front Panel LCD
65 Working with Host Audio Software
73 Mixer Effects
79 Networking
Part 3: Appendices
87 Troubleshooting
89 Audio Specifications
95 Mixer Schematics
99 Updating Firmware
101 OSC Support
103 Index
About the Mark of the Unicorn License Agreement and
Limited Warranty on Software
TO PERSONS WHO 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 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 conict 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 © 2015, 2014 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, rst write or call Mark of the Unicorn at (617) 576-2760 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 modied 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 modication,
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 specic legal rights, and you may have other
rights which vary from state to state.
MOTU, 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 certied 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 modications to this unit not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.
Part 1
Getting Started
7
Quick Start Guide
Thank you for purchasing a MOTU AVB interface!
Follow these easy steps to get started quickly.
1Download and run the MOTU AVB Installer
or
MOTU AVB USB Installer.exe
found here:
http://www.motu.com/avb
2(Optional) For access to your MOTU interface
from your iPad or iPhone, download the MOTU
AVB Discovery app from the Apple App Store.
☛Your iPhone and iPad must be on the same
WiFi network as your computer.
3Connect your MOTU interface to your
computer with a USB cable (included) or
Thunderbolt cable (sold separately). If you have a
Thunderbolt-equipped Mac running OS X
Yosemite (10.10) or later, you can alternately
connect your MOTU interface to the Mac’s
Ethernet port with a standard CAT-5e or CAT-6
Ethernet cable (sold separately).
4Switch on your MOTU interface.
5Open the MOTU AVB Control
web app by doing
one of the following:
■If you have a Mac, choose your MOTU interface
from the MOTU AVB Discovery app menu.
■If you have a PC, launch the
MOTU AVB WebUI
Setup shortcut found on the Windows desktop or
in Start menu> All Programs> MOTU
.
■From your iPad or iPhone, launch the MOTU
AVB Discovery app, and tap your interface.
■You should now see the
MOTU AVB Control
web
app in your browser, as shown on page 18. If not,
visit Appendix A, “Troubleshooting” (page 87).
■For advanced network options, and device
discovery from any modern browser, see chapter 9,
“Networking” (page 79).
6Choose a preset from the Quick Setup.
MOTU AVB 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.
Live recording with
monitor mixing
Record a live concert or recording session,
with a full monitor mix.
Stage I/O Route audio inputs from one AVB interface
to another, through Ethernet cabling.
Studio Input
Expander
Routes expansion unit’s physical inputs to
main system using AVB network streams
Studio Output
Expander
Routes main systems’s AVB network
streams to physical outputs on expansion
unit.
Optical Converter Multi-channel analog-to-digital converter
8
1248 Front Panel
1. MAIN OUT volume control. This setting, along with all
front panel settings, can also be adjusted from the
MOTU AVB Control web app.
2. MONITOR OUT volume control.
3. PHONE OUTPUTS with volume control.
4. GUITAR INPUTS with volume control. These are high-
impedance guitar inputs that provide authentic guitar
amp volume response and feel.
5. MIC INPUT preamp gain, switchable 48V phantom
power, and optional -20 dB pad switches for each mic
input. The Precision Digital Trim™ knob provides 63 dB
of preamp gain. Turn the knob to see the gain adjust-
ments on a large-scale, horizontal meter.
6. ANALOG INPUT METERS for the four mic inputs, two
guitar inputs, and eight balanced (TRS) quarter-inch
inputs on the rear panel.
7. ANALOG OUTPUT METERS for the eight balanced (TRS)
quarter-inch outputs, main outs, and monitor outs.
8. S/PDIF DIGITAL METERS (stereo input and output).
9. ADAT OPTICAL METERS. At 1x sample rates (44.1 or 48
kHz), there are sixteen channels of input and output. At
2x (88.2 or 96 kHz), there are eight channels.
10. The CLOCK section displays the current operating
sample rate and clock mode (source) for the unit.
11. POWER SWITCH: Thunderbolt, AVB, and USB are “plug-
and-play” protocols. That means you can turn the 1248
off and back on without restarting your computer.
12. The multi-purpose backlit LCD displays level meters for
all inputs and outputs. It can also show device settings
and network information, using the knobs to the left.
13. 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.
14. Push ID to display network settings for the device,
including its IP address.
15. Push TRIM to enter trim mode. In this mode, the LCD
numerically displays gain settings for eight channels at
a time. Use the front panel knobs to adjust each
channel, from left to right, starting with the MAIN
volume knob.
121314
1065431 2 7 8 9 11
15
1248 Rear Panel
1
1. The 1248 is equipped with an auto-switching interna-
tional power supply.
2. BNC word clock jacks. Use them for a variety of applica-
tions, such as digital transfers with devices that cannot
slave to the clock supplied by their digital I/O connection
with the 1248.
3. These ADAT optical “lightpipe” jacks provide 16 channels
of 24-bit ADAT optical digital I/O at 1x sample rates (44.1
or 48 kHz) and 8 channels at 2x sample rates (88.2 or 96
kHz). They are disabled at higher sample rates. The IN
and OUT ports on the right provide channels 1-8 (or 1-4
at 2x sample rates), and the left-hand ports provide
channels 9-16 (or 5-8 at 2x sample rates).
4. These jacks provide stereo, 24-bit S/PDIF digital input
and output at all supported sample rates (up to 96 kHz).
The input provides sample rate conversion, as explained
in “S/PDIF with sample rate conversion” on page 46.
5. The MONITOR OUT pair provides auxiliary stereo analog
output for secondary studio monitors, or any other
desired destination. These connectors are balanced (TRS)
quarter-inch connectors that can also accept an unbal-
anced plug (with the ring disconnected). Control volume
from the MOTU AVB Control web app or from the front
panel volume control.
6. The MAIN OUT pair provides stereo analog output for
primary (powered) studio monitors or PA speakers, or
any other desired destination. These connectors are
balanced (TRS) quarter-inch connectors that can also
accept an unbalanced plug (with the ring disconnected).
Control volume from the web app or from the front panel
volume control.
7. The 1248’s eight analog outputs are balanced (TRS)
quarter-inch connectors that can also accept an unbal-
anced plug (with the ring disconnected). The output trim
can be adjusted from the Output Setting section of the
Device Tab in the MOTU AVB Control web app software.
8. 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 1248’s Precision
Digital Trim™ feature: digitally controlled analog trims
that let you adjust input level in 1 dB increments from
the included MOTU AVB Control web app software.
9. Connect up to four microphones here. Each input
provides individual preamp gain (63 dB), switchable 48V
phantom power, and an optional -20 dB pad.
10. Connect the 1248 to the computer here via either
Thunderbolt or USB 2.0, using a standard Thunderbolt or
USB cable. For details, see “Setup for multiple Thunder-
bolt and USB interfaces” on page 42.
11. This AVB ethernet port provides industry standard IEEE
802.1 network connectivity to other network devices.
Examples include:
■Another 1248 or any other MOTU AVB-equipped audio
interface, such as the 1248, 8M, 16A, 24Ai, 24Ao, 112D,
Monitor 8, etc.
■A standard ethernet hub or Wi-Fi router (for internet
connection and communication with the MOTU AVB
Control 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 a Thunderbolt
port) running OS X Yosemite (10.10) or later. This
allows you to operate the 1248 as an audio interface
over Ethernet.
2 3 7 8 94 5 6
11 10
8M Front Panel
1. HEADPHONE JACK with volume control.
2. MIC INPUT preamp gain, switchable 48V phantom
power, and optional -20 dB pad for each mic input. The
Precision Digital Trim™ knob provides 53 dB of preamp
gain. Turn the knob to see the gain adjustments on a
large-scale, horizontal meter.
3. INPUT METERS for the eight mic inputs. If the 8M’s
V-Limit™ feature is engaged for a mic input, and V-Limit
kicks in, you’ll see a compression meter extend
downwards from the top right of the meter, as shown on
channels 1 and 6 in the illustration above. For more
information, see “8M mic/guitar input meters with
V-Limit™ compressor” on page 61. Also see “Soft Clip™”
on page 45.
4. OUTPUT METERS for the eight balanced TRS analog
outputs.
5. ADAT OPTICAL input and output metering. At 1x sample
rates (44.1 or 48 kHz), there are sixteen channels of input
and output. At 2x (88.2 or 96 kHz), there are eight
channels.
6. The CLOCK section displays the current operating sample
rate and clock mode (source) for the unit.
7. POWER SWITCH: Thunderbolt, AVB, and USB are “plug-
and-play” protocols. That means you can turn the 8M off
and back on without restarting your computer.
8. The multi-purpose backlit LCD displays level meters for
all inputs and outputs. It can also show device settings
and network information, using the knobs to the left.
9. 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.
10. Push ID to display network settings for the device,
including its IP address.
11. Push TRIM to enter trim mode. In this mode, the LCD
numerically displays gain settings for eight channels a
time. Use the front panel knobs to adjust each channel
7
8910
632
14 5
11
8M Rear Panel
1. The 8M is equipped with an auto-switching interna-
tional power supply.
2. BNC word clock jacks. Use them for a variety of applica-
tions, such as digital transfers with devices that cannot
slave to the clock supplied by their digital I/O connection
with the 8M.
3. These ADAT optical “lightpipe” jacks provide 16 channels
of 24-bit ADAT optical digital I/O at 1x sample rates (44.1
or 48 kHz) and 8 channels at 2x sample rates (88.2 or 96
kHz). They are disabled at higher sample rates. The IN
and OUT ports on the right provide channels 1-8 (or 1-4),
and the left-hand ports provide channels 9-16 (or 5-8).
4. The 8M’s eight analog outputs are balanced TRS quarter-
inch connectors that can also accept an unbalanced plug
(with the ring disconnected). They are equipped with
very high quality 24-bit 192 kHz converters. The output
trim can be adjusted from the Output Setting section of
the Device Tab in the MOTU AVB Control web app
software.
5. 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 front panel controls to adjust
individual preamp gain, 48V phantom power, and an
optional -20 dB pad for each mic input. The quarter-inch
plug is equipped with a high-impedance circuit for
guitar input.
6. Connect the 8M to the computer here via either
Thunderbolt or USB 2.0, using a standard Thunderbolt or
USB cable. For details, see “Setup for multiple Thunder-
bolt and USB interfaces” on page 42.
7. This AVB ethernet port provides industry standard IEEE
802.1 network connectivity to other network devices.
Examples include:
■Another 8M or any other MOTU AVB-equipped audio
interface, such as the 1248, 8M, 16A, 24Ai, 24Ao, 112D,
Monitor 8, etc.
■A standard ethernet hub or Wi-Fi router (for internet
connection and communication with the MOTU AVB
Control 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 a Thunderbolt
port) running OS X Yosemite (10.10) or later. This
allows you to operate the 8M as an audio interface over
Ethernet.
4 51 2 3
7 6
16A Front Panel
1. ANALOG INPUT METERS for the sixteen balanced (TRS)
quarter-inch inputs.
2. ANALOG OUTPUT METERS for the sixteen balanced (TRS)
quarter-inch outputs.
3. ADAT OPTICAL input and output metering. At 1x sample
rates (44.1 or 48 kHz), there are sixteen channels of input
and output. At 2x (88.2 or 96 kHz), there are eight
channels.
4. The CLOCK section displays the current operating sample
rate and clock mode (source) for the unit.
5. POWER SWITCH: Thunderbolt, AVB, and USB are “plug-
and-play” protocols. That means you can turn the 16A off
and back on without restarting your computer.
6. Push SEL (select) to enter the LCD menu. Push the
ARROW buttons 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.
7. Push ID to display network settings for the device,
including its IP address.
67
431 52
16A Rear Panel
1. The 16A is equipped with an auto-switching interna-
tional power supply.
2. BNC word clock jacks. Use them for a variety of applica-
tions, such as digital transfers with devices that cannot
slave to the clock supplied by their digital I/O connection
with the 16A.
3. These ADAT optical “lightpipe” jacks provide 16 channels
of 24-bit ADAT optical digital I/O at 1x sample rates (44.1
or 48 kHz) and 8 channels at 2x sample rates (88.2 or 96
kHz). They are disabled at higher sample rates. The IN
and OUT ports on the right provide channels 1-8 (or 1-4),
and the left-hand ports provide channels 9-16 (or 5-8).
4. The 16A’s sixteen analog outputs are balanced TRS
quarter-inch connectors that can also accept an unbal-
anced plug (with the ring disconnected). The output trim
can be adjusted from the Output Setting section of the
Device Tab in the MOTU AVB Control web app software.
5. These sixteen 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 16A’s Precision
Digital Trim™ feature: digitally controlled analog trims
that let you adjust input level in 1 dB increments from
the included MOTU AVB Control web app software.
6. Connect the 16A to the computer here via either
Thunderbolt or USB 2.0, using a standard Thunderbolt or
USB cable. For details, see “Setup for multiple Thunder-
bolt and USB interfaces” on page 42.
7. This AVB ethernet port provides industry standard IEEE
802.1 network connectivity to other network devices.
Examples include:
■Another 16A or any other MOTU AVB-equipped audio
interface, such as the 1248, 8M, 16A, 24Ai, 24Ao, 112D,
Monitor 8, etc.
■A standard ethernet hub or Wi-Fi router (for internet
connection and communication with the MOTU AVB
Control 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 a Thunderbolt
port) running OS X Yosemite (10.10) or later. This
allows you to operate the 16A as an audio interface
over Ethernet.
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MOTU AVB Switch
1. Use these 1 gigabit AVB NETWORK ports to connect any of the following:
■MOTU AVB interfaces (1248, 8M and 16A)
■Another MOTU AVB Switch (to extend the network)
■A 3rd-party AVB switch
■An Ethernet device, Wi-Fi router or Ethernet network
■A third-party AVB device
2. This standard Ethernet port can be used to connect a standard 10/100/1Gb Ethernet
device, Wi-Fi router or Ethernet network. DO NOT connect AVB devices to this port; it does
not support AVB.
3. Connect the included 15V DC power supply here. Alternately, you can use any power
supply that conforms to the indicated specifications.
4. The front panel LEDs indicate signal activity for each port. When a 1 gigabit device is
connected to a port , the 1 Gb LED illuminates.
NOTE: When making network connections, use shielded CAT-5e or CAT-6 cables (a higher
grade cable). For local connections, patch cables can be used, but will reduce the maximum
total cable run length.
The MOTU AVB Switch provides deep functionality that goes beyond
a standard Ethernet switch.
■No configuration is necessary. The switch configures itself and manages all device
discovery, configuration, and system resource allocation.
■The switch establishes and maintains extremely accurate timing and synchronization
among all connected devices.
■The switch negotiates audio routing throughout the network and guarantees that audio
integrity is maintained, regardless of external (non AVB) network traffic.
■The switch consolidates audio, synchronization, and control together.
For more information, see chapter 9, “Networking” (page 79).
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MOTU AVB Control Web App
OVERVIEW
MOTU AVB Control is a web app that gives you
complete control over your MOTU audio interface.
If you have several MOTU AVB interfaces
networked together, such as the 1248, 16A and 8M,
you can control them all. If you are working with a
large-scale network of many MOTU AVB
interfaces, you can access and control any device
on the network.
IT’S NOT ON YOUR HARD DRIVE
The MOTU AVB Control web app is served from
the MOTU interface hardware itself, therefore it is
not an application on your computer’s hard drive.
Instead, access it by using the
MOTU AVB
Discovery app for Mac, the MOTU AVB WebUI
Setup for Windows or through your web browser
by typing your MOTU device’s IP Address.
USE YOUR FAVORITE WEB BROWSER
The MOTU AVB Control web app runs in any
modern web browser on any device connected to
your MOTU interface, either directly or wirelessly
through a WiFi 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, IE 11 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/avb to get the latest MOTU
AVB installer and run it on your computer to install
the MOTU AVB Discovery app (Mac) or MOTU
AVB WebUI Setup (Windows) 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 MOTU interface to your computer
or laptop with a Thunderbolt or USB cable. Make
sure your iPad, iPhone, tablet or smartphone is
connected to the same WiFi network as your
computer or device. You can use any network
connection scenario explained in “Setup for web
app control” on page 43.
LAUNCHING THE WEB APP
To launch the web app, do any of the following:
■If you have a Mac, choose your MOTU interface
from the MOTU AVB Discovery app menu, as
shown below. If you are on Windows, launch the
MOTU AVB WebUI Setup shortcut on the Windows
desktop or in Start menu> All Programs> MOTU.
■From your iPad or iPhone, launch the MOTU
AVB Discovery app.
■In your favorite web browser, type this URL:
localhost:1280. (This URL requires a Thunderbolt
or USB connection to your MOTU interface.)
■If the Ethernet port on your interface 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 AVB Control web
app in your browser, as shown on page 18. If not
visit Appendix A, “Troubleshooting” page (87).
Obtaining your MOTU device’s IP address
On the front panel of the interface, push the ID
knob or button once. The LCD now displays the
unit’s IP address, which should look something like
this: “IP Address: 192.168.1.209”.
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DEVICE TAB
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1. If you have two or more MOTU AVB
interfaces, the Device 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, by itself.
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
hardware itself, such as mic input
phantom power and preamp gain.
6. Expands and collapses the sidebar.
7. Lets you create, save, recall and
manage presets for your MOTU AVB
interface. These presets capture and
recall the complete state of the
device (all settings in all tabs).
8. Choose the desired sample rate.
9. The Quick Setup button prompts
factory presets used to configure
your interface for a specific applica-
tion. See Chapter 6 for details.
10. Click to rename the interface. To
restore the default name, delete the
current name.
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’ll be notified here. Click
More Info to learn what’s new and
start the update process. Firmware
updating requires a network
connection. See Appendix D,
“Updating Firmware” page (99).
13. Choose the clock source from the
Clock Mode menu. Your MOTU device
will resolve its digital clock to this
master source. See “Synchroniza-
tion” on page 51 and other clock-
related topics on pages 52-53.
14. 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. The Word Clock output on the your
MOTU interface can operate as an
OUT or a THRU. In addition, at higher
sample rates, it can either follow the
system clock or operate at the corre-
sponding 1x sample rate. For details,
see “Daisy-chaining word clock” on
page 53.
16. If you have multiple MOTU AVB
interfaces, one of them may serve as
a master clock source for the
network. Click this button to choose
the current interface (1) as the
master clock source.
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, Main, and Monitor outputs
provide full volume control. Analog
outputs provide calibration control
(-24 to 0 dB).
19. The 8M mic inputs have these
additional input settings. See “8M
mic/guitar input meters with
V-Limit™ compressor” on page 61
and “Soft Clip™” on page 45.
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DEVICE TAB (CONTINUED)
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Scroll down to view these additional
Device tab settings.
19. In the Input/Output Banks sections,
you can disable banks that you are
not using. This hides them from the
routing tab and mixer to simplify
operation and conserve DSP power.
20. AVB is IEEE’s Audio Video Bridging
Ethernet standard for high-
bandwidth, low-latency audio
streaming over Ethernet. If your
1248, 8M or 16A is connected to a
2nd MOTU AVB interface through its
network port, or to an AVB switch for
access to an extended AVB network,
you can stream audio channels to
other destinations on the network.
See chapter 9, “Networking”
(page 79).
21. If you have AVB network input
streams enabled, connect them to
the output streams of other devices
on the network here.
22. 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, simul-
taneously. For example, the 1248
has 32 physical inputs and 34
outputs, so to be able to access them
all individually, you should configure
these two settings for 32 and 34,
respectively. Map them as desired in
the Routing tab (page 20). You can
specify a higher number of audio
channels if you will be streaming
additional channels to and from the
AVB network or the mixer.
23. The Computer Volume Controls
setting is only available when your
MOTU interface is connected to a
Mac using Thunderbolt. When
enabled, this option allows you to
control the volume of From
Computer channels 1-2 using the
volume controls on your Mac’s
keyboard.
24. Use these buttons to manually check
for and install updates for your
MOTU AVB device. For complete
details, see Appendix D, “Updating
Firmware” page (99). Updating from
a file can be done offline from your
computer, using an update you’ve
obtained through MOTU’s web site.
The Check For Updates button
requires that the computer (or
device) you are using to view your
MOTU AVB interface is connected to
the internet through a local network
or WiFi.
25. Use these buttons to restart the
device or restore its factory presets.
26. In the Optical Setup section, you can
choose between 8-channel ADAT or
stereo TOSLink formats for bank A
input and output, independently. At
882. or 96 kHz, the ADAT setting
supports 4-channel SMUX format.
See “Optical” on page 46.
27. The digital mixer in your MOTU AVB
interface 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.
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MIXING TAB
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The Mixing tab gives you full access to
the 48-channel mixer in your MOTU AVB
interface, which provides a main mix
bus, monitor bus, three group busses,
seven aux busses, and a dedicated
reverb bus. Use the Device tab to config-
ure how many inputs you wish to work
with (up to 48). Use the Routing tab
(page 20) 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 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 (24). Groups are sent to
the Main Mix with its Main send
fader (24) or aux busses (19).
10. Group buses, the main mix bus, and
the reverb return bus are equipped
with the Leveler, a vintage compres-
sor modeled after the Teletronix
LA-2A leveling amplifier.
11. The reverb channel strip provides
controls for the reverb processor. Use
the reverb send on individual 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 24.
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 22.
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 channel
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. 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. 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. Show and hide output busses here.
27. Show/hide all busses with one click.
28. Same as (25) above.
29. Show and hide inputs here.
30. Show/hide all inputs with one click.
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AUX MIXING TAB
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The Aux Mixing tab provides quick
access to your MOTU AVB interface’s mix
busses (aux busses, groups and reverb
bus), viewed one at a time. Choose a bus
in the Aux Mix Target 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 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. Each channel’s
mono/stereo status cannot be
toggled (unlike MIXING page).
10. Solo and mute for the aux bus
master fader.
11. 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.
12. Click the View Personal Mix button
to open a new web page that
displays only that specific Aux Mix or
Group.
13. Show and hide mix groups and the
reverb bus here.
14. Use the Groups button here to show
or hide all groups with one click.
15. Show and hide mixer inputs
(channel sends) here.
16. Show and hide all mixer inputs with
one click here.
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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 21), reveal the
side bar (item #3 on page 21), and then
show the input channel you want in the
Mixer Inputs section (29).
To show and hide sections of the channel
strip, such as EQ or the compressor, use
the Controls section of the side bar (item
#3 in the Mixing tab on page 21).
1. Click the input channel name to
change it. Delete the current name to
restore the default name.
2. Provides hardware settings for the
input. For example, if the input is a
mic input, you’ll see settings for
preamp gain, 48V phantom power
and so on.
3. Choose the source for the input
channel. You can also make this
setting directly on the Routing grid
(page 20).
4. Create, name, save and recall channel
strip presets.
5. Toggles the input between mono and
a stereo pair.
6. High Pass Filter with cutoff frequency.
7. Each effect in the channel strip (High
Pass Filter, Gate, EQ, etc.) has an on/
off button (on the left) and a preset
menu on the right, for managing
presets that apply only to that
processing module. For example, you
can create your own EQ presets for the
EQ modules.
8. The Gate processor provides standard
attack, threshold and release
controls.
9. The Gate indicator turns red when the
gate is engaged.
10. The EQ section provides four bands of
parametric EQ, each with standard
Gain, Frequency, and Bandwidth
settings.
11. The High and Low EQ bands provide a
Shelf filter button for standard high
and low shelf filtering.
12. The Compressor provides standard
controls for Threshold, Ratio, Attack,
Release and Gain. Normally, the
compressor operates in Peak mode,
where signal peaks determine the
input level. Engage the RMS button to
uses RMS values (a computational
method for determining overall
loudness) to measure the input level.
13. Input level and gain reduction meters
for the compressor.
14. Aux and reverb sends.
15. Solo/Mute. Mute affects all sends as
well as the main channel. Pre-fader
sends are not affected by Mute.
16. Move the fader to adjust level.
Double-click to return to zero (unity
gain) or -∞.
17. Click the dB scale numbers to make
the fader jump exactly to that level.
Click and drag horizontally to jump
consecutive faders to the same level.
18. Click to type in an exact dB level.
19. Channel pan. For mono inputs,
double-click to center.
20. Main Mix Slider is used to feed signal
to the Main Mix. Slider is set to 0 dB
by default, so all channel strips are
pre-routed to the Main Mix bus. If a
channel is being sent to a Group
(which will eventually be fed to the
Main Mix), drag the slider to -∞ so it
is not sent to Main Mix directly.
21. Group sends.
22. ‘S’ lets you solo the group. ‘PRE’
toggles the sends between pre- and
post-fader routing, i.e. before or after
the channel fader.
23. Clears all solos.
24. ‘S’ lets you solo the Aux bus. ‘PRE’
toggles the sends between pre- and
post-fader routing, i.e. before or after
the channel fader. The dots let you
toggle the Aux bus between mono
and stereo.
25. This side bar, with the section labels
in it, can be shown or hidden using
the Legend switch in the Controls
section of the side bar (item #3 in the
Mixing tab on page 21).
26. Shows how much DSP power is being
used by the mixer hardware. To free
up DSP bandwidth, try reducing the
number of mixer ins, disabling
channel effects, reverb, etc. See “DSP
Usage” on page 78 for more info.
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MAIN MIX AND MONITOR CHANNEL STRIPS
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To access the Main Mix and Monitor
channel strips, go to the Mixing tab
(page 21) 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 21).
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 (12).
Use the Routing grid (page 20) 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 Out bus is
assigned to the Phones and Main
Outs (physical outputs on the inter-
face), you’ll see trim settings for both
pairs. Grayed out if there are no
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 20).
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 23), including
High and Low Shelf filter options.
8. The Leveler provides specialized gain
reduction modeled after the legend-
ary Teletronix LA-2A Leveling Ampli-
fier. For complete details, see
“Leveler” on page 76.
9. Mutes for the Main Mix bus and
Monitor bus.
10. Master faders for the Main Mix bus
and Monitor bus. Use the same
techniques described for input
channel faders (items 16, 17 and 18
on page 23).
11. 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).
12. 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.
13. The SC button clears all solos.
14. This mid-band EQ is currently
disabled (and therefore grayed out).
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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 20).
To access an Aux bus channel strip, go to the
Mixing tab (page 21), reveal the side bar (item
#3 on page 21), and then show the aux busses
you want in the Mixer Outputs section (26).
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 21).
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 23), including High and Low Shelf
filter options.
5. Aux bus solo and mute.
6. Aux bus master fader.
7. Click to type specific value manually.
8. 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.
9. A disabled EQ band.
10. 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 24).
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GROUP AND REVERB CHANNEL STRIPS
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Group busses can be used to create a mix sub-
group, which is a set of inputs you wish to
control together as a group. Groups differ from
aux busses in that they have aux sends, a reverb
send, as well as a main mix send. In addition,
group busses are equipped with the Leveler.
The Reverb bus is a special group bus that
provides a reverb processor. If you disable the
reverb, the reverb bus functions as a (fourth)
regular group bus.
To access the Group and Reverb bus channel
strips, go to the Mixing tab (page 21), reveal the
side bar (item #3 on page 21), and then show
the desired Group busses or Reverb bus in the
Mixer Outputs section (26).
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 21).
1. A Group bus channel strip. Click the name to
rename it. Delete the current name to return
to its default.
2. The Reverb bus. If you disable the Reverb
processor, it can be used as a fourth Group
bus. The Reverb channel strip is twice as
wide as other mixer channel strips to
accommodate the Reverb processor
controls.
3. Group busses and the Reverb bus are always
stereo.
4. The four-band parametric EQ module for
Group busses and the Reverb bus operates
the same as described for input channels
(items 10 and 11 on page 23), including
High and Low Shelf filter options.
5. The Reverb processor. For complete infor-
mation, see “Reverb” on page 77.
6. Main Mix sends.
7. Master faders for the Group and Reverb
busses.
8. Mute and Solo.
9. 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 24).
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CHAPTER
27
1About Your MOTU AVB Audio
Interface
The 1248, 8M, and 16A are hybrid Thunderbolt™/
USB2 audio interfaces with 48-channel digital
mixers and AVB Ethernet networking capability.
They can operate as audio interfaces for a
computer, as stand-alone digital mixers, as
gateways to an expanded studio system, as
components of an extended AVB audio network, or
as capable hybrid devices performing all of these
roles simultaneously.
Together, they are designed to be a central
component of a modern, high performance
recording studio or live mixing platform. The
following sections provide a brief overview of their
main features and characteristics.
State-of-the-art A/D and D/A conversion
The analog section of each interface employs state-
of-the-art 24-bit DACs and ADCs, which deliver
analog recording and playback with remarkably
high dynamic range at sample rates from 44.1 to
192 kHz.
Complementary I/O configurations
Each interface delivers an exceptional array of
analog and digital audio. In addition, the interfaces
are designed to complement one another in terms
of delivering a wide range of I/O options; you can
mix and match several interfaces and operate them
as a unified I/O and mixing system. The following
sections provide a bird’s-eye glance of the I/O
configurations offered by each interface in the
MOTU AVB family.
Each interface provides a variety of analog and
digital interconnects, all active simultaneously,
designed to provide everything you need for a well-
equipped recording studio.
1248
66 simultaneous audio channels
8M
50 simultaneous audio channels
16A
64 simultaneous audio channels
Network I/O
Each interface is also capable of handling 128
channels of network audio input and output for an
additional 256 simultaneous audio channels.
Connection Input Output
Quarter-inch analog on bal/unbal TRS 8 12
Mic inputs with individual preamps on XLR 4 -
Hi-Z guitar inputs 2 -
Headphone output - 2 x stereo
ADAT optical digital (at 44.1 or 48 kHz) 16 16
RCA S/PDIF digital up to 96 kHz with SRC stereo stereo
Total 32 34
Connection Input Output
Quarter-inch analog on bal/unbal TRS - 8
Mic/guitar inputs on combo XLR/TRS 8 -
Headphone output - stereo
ADAT optical digital (at 44.1 or 48 kHz) 16 16
Total 24 26
Connection Input Output
Quarter-inch analog on bal/unbal TRS 16 16
ADAT optical digital (at 44.1 or 48 kHz) 16 16
Total 32 32
A B O U T Y O U R M O T U A V B A U D I O I N T E R F A C E
28
Other MOTU AVB interfaces
The 1248, 8M and 16A are part of a larger family of
audio interfaces, summarized below, with
complementary I/O configurations.
24Ai
72 simultaneous audio channels
24Ao
72 simultaneous audio channels;
Monitor 8
40 simultaneous audio channels (54 connections)
112D
224 simultaneous audio channels
Universal connectivity
The 1248, 16A, and 8M can connect to a computer
with Thunderbolt or high-speed USB 2.0 (which is
compatible with USB 3.0). They are USB audio
class-compliant, which means that they are iPad
compatible (with a camera connection kit) and do
not require driver installation for USB connection
to a computer. Industry standard audio drivers for
both Thunderbolt and USB operation provide
universal compatibility with any audio software.
Alternately, the 1248, 16A, and 8M can be
connected to the Ethernet port on a recent-
generation Mac (any Mac with Thunderbolt on it)
running Mac OS X Yosemite (10.10) or later for
audio interface operation through AVB Ethernet.
On-board DSP with mixing and effects
Each interface is equipped with a powerful DSP
engine that drives both an extensive routing matrix
and a 48-input digital mixer with 12 stereo busses
and effects. The mixer offers familiar operation
modeled after large format mixing consoles.
32-bit floating point processing
All of the mixing and effects processing in the DSP
engine is handled with 32-bit floating point
calculations, to maintain and deliver virtually
unlimited headroom and the utmost in sound
quality.
Modeled vintage effects processing
Effects include “classic” reverb, compression
modeled after the legendary Teletronix LA-2A
compressor, and 4-band EQ modeled after British
analog console EQs.
AVB system expansion and audio networking
AVB stands for the IEEE 802.1 Audio Video
Bridging Ethernet standard for high-bandwidth,
low-latency audio streaming over Ethernet. The
AVB Ethernet network port on each MOTU
interface lets you add a second AVB-equipped
MOTU interface using any standard CAT-5e
Connection Input Output
Balanced analog on 3x D-sub or 6x Phoenix 24 -
ADAT optical digital (at 44.1 or 48 kHz) 24 24
Total 48 24
Connection Input Output
Balanced analog on 3x D-sub or 6x Phoenix - 24
ADAT optical digital (at 44.1 or 48 kHz) 24 24
Total 24 48
Connection Input Output
Quarter-inch analog on bal/unbal TRS 8 10
XLR main out - 2
Summed mono quarter-inch out - 6
Headphone outs - 12
ADAT optical digital (at 44.1 or 48 kHz) 16 -
Total I/O connections 24 30
Total I/O channels (discrete channels) 24 16
Connection Input Output
ADAT optical digital (up to 96 kHz) 24 24
AES/EBU on 8-ch DB25 D-sub 24 24
MADI on coaxial BNC 64 64
Total I/O connections 112 112
A B O U T Y O U R M O T U A V B A U D I O I N T E R F A C E
29
Ethernet cable. You can network up to five MOTU
interfaces together using a MOTU AVB Switch™
(sold separately), and then run them as a stand-
alone network or as an extended bank of I/Os for
your computer-based production system (or
both). You can even connect multiple computers,
each with full access to all devices on the network
(including the other computers).
With additional standard AVB switches (from
MOTU or other brands) and standard Ethernet
cabling, you can build an extensive AVB audio
network. The entire network operates with near-
zero network latency, even over very long cable
runs. MOTU’s AVB implementation allows you to
stream hundreds of audio channels among devices
and computers on the network with guaranteed
Quality of Service (QoS), prioritizing audio
streams over less important traffic.
Matrix routing and multing
Each MOTU interface provides completely flexible
matrix-style audio routing and multing. You can
route any analog or digital input, computer
channel, or network stream to any other output,
computer, or network device. You can also mult any
single input to unlimited multiple output
destinations.
256 channels of network audio I/O for your
host computer
The 1248, 8M, and 16A interfaces let you stream up
to 128 audio channels in and out, simultaneously,
through their Thunderbolt connection to a host
computer. Sources and destinations can include
inputs and outputs on the device, inputs and
outputs on other interfaces on the network, and
even audio software apps running on other
computers connected to other devices on the
network.
Web app control
You can control on-board DSP, mixing, device
settings, clock/sync settings, and network audio
routing from the MOTU AVB Control web app
software running in your favorite browser on a
laptop, tablet or smart phone connected to your
MOTU interface directly, or through your local
WiFi network. Multiple devices can be used simul-
taneously to access any audio interface settings on
the network.
Stand-alone mixing with wireless control
If you connect your MOTU interface to an Apple
Airport or other WiFi router with a standard
Ethernet cable, you can control its powerful mixing
and DSP effects from your smart phone or tablet,
without a computer — great for live sound mixing
from your iPad, tablet, or other wireless device.
ADAT digital I/O
The 1248, 8M and 16A interfaces each provide two
8-channel banks of optical digital I/O. Connect
outboard digital processors, digital mixers or other
gear: 16 channels at 44.1/48 kHz or 8 channels at
88.2/96 kHz.
S/PDIF digital I/O with SRC
The 1248 provides S/PDIF digital input and output
on standard RCA “coax” connectors. The input is
equipped with Sample Rate Conversion (SRC),
allowing you to input a digital signal running at a
different sample rate than the 1248. See “S/PDIF
with sample rate conversion” on page 46.
Word clock
Each MOTU interface supports standard word
clock synchronization at any supported sample
rate. When the interface is operating at 96 kHz, it
can generate word clock output at either 96 or
48 kHz; the 1x equivalence is available as an option
for word clock output when running at high
sample rates (from 88.2 to 192 kHz). The word
clock OUT port can alternately be used as a THRU
A B O U T Y O U R M O T U A V B A U D I O I N T E R F A C E
30
port for word clock daisy-chaining. To configure,
use the LCD menu to navigate to Settings -> Word
Clock Thru Mode.
Comprehensive metering
The large backlit LCD displays all signal activity at
a glance with detailed metering for all analog and
digital I/O. You can access many hardware settings
directly from the front panel.
Headphone outputs
The 1248 front panel provides two independent
headphone jacks with separate volume controls.
You can program the outputs to mirror another set
of 1248 outputs or act as their own independent
outputs. The 8M also offers a single headphone
output.
Precision Digital Trim™
On each interface, all of the analog inputs are
equipped with digitally controlled analog trims,
adjustable in 1 dB increments. The input trims for
mic inputs and guitar inputs can be adjusted from
the knobs on the front panel. You can save your
trim configurations as a preset for instant recall.
Rack mount or desktop operation
Each interface is housed in a sturdy, metal-alloy,
19-inch, rack-mountable unit. The rack mounting
brackets can be removed using a 7/64” hex wrench
for desktop operation.
AudioDesk
AudioDesk is a full-featured audio workstation
software package for Mac and Windows that is
available as a free download for you as a 1248, 8M
or 16A owner. Visit motu.com/avb to obtain your
copy. AudioDesk provides multi-channel
waveform editing, automated virtual mixing,
graphic editing of ramp automation, real-time
effects plug-ins with crossfades, support for many
third-party audio plug-ins, sample-accurate
editing and placement of audio, and more.
CHAPTER
31
2Packing List and
System Requirements
PACKING LIST
Your MOTU interface ships with the items listed
below. If any of these items are not present in the
box when you first open it, please immediately
contact your dealer or MOTU.
■One audio interface
■One USB cable
■One power cord
■One manual
■Product registration card
SYSTEM REQUIREMENTS
■A 1 GHz Intel-based Mac or Pentium-based PC
(or compatible). Faster CPUs are recommended
for best performance.
■2 GB RAM; 4 GB or more recommended.
■OS X 10.8 or later; Windows 7 or later; for
operation as an AVB Ethernet audio interface, Mac
OS X 10.10 or later is required, running on a
recent-generation Mac (any Mac with a
Thunderbolt port on it).
■Available Thunderbolt or high-speed USB 2.0
(or 3.0) port
■A large hard drive (preferably at least 500 GB)
PLEASE REGISTER TODAY!
Please register your MOTU interface today. There
are two ways to register.
■Visit www.motu.com/register
OR
■Fill out and mail the included product
registration card
As a registered user, you will be eligible to receive
technical support and announcements about
product enhancements as soon as they become
available. Only registered users receive these
special update notices, so please register today.
Thank you for taking the time to register your new
MOTU products!
P A C K I N G L I S T A N D S Y S T E M R E Q U I R E M E N T S
32
CHAPTER
33
3Software Installation
OVERVIEW
USB 2.0 class-compliant operation. . . . . . . . . . . . . . . . . . . 33
Operation as an AVB Ethernet audio interface . . . . . . . 33
Software installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Audio drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
MOTU AVB Discovery app for Mac . . . . . . . . . . . . . . . . . . . 34
MOTU AVB WebUI Setup for Windows . . . . . . . . . . . . . . . 34
MOTU AVB USB Control Panel . . . . . . . . . . . . . . . . . . . . . . . 34
AudioDesk workstation software . . . . . . . . . . . . . . . . . . . . 35
Working with host audio software. . . . . . . . . . . . . . . . . . . 35
USB 2.0 CLASS-COMPLIANT OPERATION
Your MOTU interface is a USB 2.0 audio class-
compliant device. This means that you can connect
it to your Mac with a USB cable and use it without
installing any software drivers. The Mac recognizes
your MOTU interface as a USB audio device and
makes its inputs and outputs available to your host
audio software. Basic settings, such as the
hardware’s sample rate, are made in either your
host software (Mac) or your system settings
(Windows).
☛In this scenario, your MOTU interface
provides basic audio input and output, and no
software driver installation is necessary.
As explained earlier in this guide, the MOTU AVB
Control web app provides full access to all settings
in the device, including the extensive on-board
routing, mixing, and effects processing features.
Since the web app is served from the audio
interface hardware itself, it does not require any
software installation on your computer; all it
requires is a network connection between your
computer and your MOTU interface with a
standard Ethernet cable, Ethernet hub, or shared
Wi-Fi network. For details about accessing the web
app through the network port, see “MOTU AVB
Control Web App” on page 17.
OPERATION AS AN AVB ETHERNET AUDIO
INTERFACE
To use your MOTU interface as an audio interface
over AVB Ethernet, all you need is a recent Mac
(any Mac that has a Thunderbolt port on it) with
Mac OS X Yosemite (10.10) or later installed.
Connect the network port on your MOTU
interface to the Ethernet port on the Mac using a
standard, high-grade (CAT-5e or CAT-6) network
cable up to 100 meters in length. You can then use
your MOTU interface as a standard, low-latency
multi-channel audio interface with any Core Audio
compatible host software running on the Mac.
☛In this scenario, your MOTU interface
provides basic audio input and output, and no
software driver installation is necessary.
For details about accessing device settings in the
web app through a network port connection, see
“MOTU AVB Control Web App” on page 17.
SOFTWARE INSTALLATION
Software installation is required for any of the
following scenarios:
■You are using a PC running Windows 7 or later.
■You will use your MOTU interface as a
Thunderbolt audio interface with your laptop or
desktop computer.
■You will use your MOTU interface as a USB
audio interface, and you want to access the web app
without using the network port.
■You will be using multiple MOTU interfaces.
S O F T W A R E I N S T A L L A T I O N
34
If none of the above scenarios apply to you, then
you can skip software installation if you wish, and
proceed to details about accessing the web app
through the network port, see “MOTU AVB
Control Web App” on page 17.
Download and run the MOTU AVB Audio
Installer
To download the latest MOTU AVB audio installer
for Mac or Windows, visit www.motu.com/avb.
Follow the directions that the installer gives you.
☛We recommend that you run the software
installer before you connect your MOTU interface
to your computer and power it on. This ensures
that all driver components are properly installed in
your system.
AUDIO DRIVERS
On the Mac, the installer provides a Core Audio
driver for Thunderbolt operation. (USB audio
operation is handled by Mac OS X.) On Windows,
the installer provides USB ASIO and Wave drivers.
MOTU AVB USB ASIO Driver
On Windows, to enable your MOTU interface in
your ASIO host software, choose the MOTU AVB
USB ASIO driver.
Figure 3-1: Choosing the MOTU AVB ASIO driver in Cubase.
MOTU AVB DISCOVERY APP FOR MAC
On the Mac, the MOTU AVB Discovery app is
installed in your Mac’s applications folder; a
shortcut is installed for it, too (as shown on page
page 7). It locates all MOTU AVB interfaces
connected to the Mac, either directly through USB
or on your network, and displays them in a list.
Choose an interface to access its settings through
the web app (“MOTU AVB Control Web App” on
page 17).
MOTU AVB WEBUI SETUP FOR WINDOWS
On Windows, the installer provides a MOTU AVB
WebUI Setup shortcut found on the Windows
desktop or in Start menu> All Programs> MOTU.
Use this shortcut to access the MOTU AVB Control
web app directly in your favorite web browser.
MOTU AVB USB CONTROL PANEL
On Windows, the MOTU AVB USB Control Panel
(Start menu> All Programs> MOTU) provides
three tabs: Status, Buffer Settings and Info. The
Buffer Settings tab provides several basic settings
for the AVB USB driver.
Figure 3-2: The MOTU AVB USB Audio Control Panel Buffer Settings
tab.
USB Streaming Mode
USB Streaming Mode (Figure 3-2) determines how
frequently the USB driver transfers audio. Smaller
settings reduce latency. This setting determines the
latency for standard Windows audio applications
(such as Media Player). For further information
about Latency, refer to “Reducing monitoring
latency” on page 69.
ASIO Buffer Size
ASIO Buffer Size (Figure 3-2) determine how much
delay you hear when monitoring live inputs
through your audio software: larger buffers
S O F T W A R E I N S T A L L A T I O N
35
produce more delay; smaller buffers produce less.
For complete information about this setting, see
“Working with Host Audio Software” on page 65.
AUDIODESK WORKSTATION SOFTWARE
AudioDesk is an advanced workstation software
package for Mac and Windows that lets you record,
edit, mix, process, bounce and master multi-track
digital audio recording projects. Advanced features
include real-time effects processing, recording,
and much more.
See the AudioDesk User Guide, available on your
computer hard drive as a PDF document.
Figure 3-3: AudioDesk.
WORKING WITH HOST AUDIO SOFTWARE
For further information about using your MOTU
interface with host audio software, see “Working
with Host Audio Software” on page 65.
S O F T W A R E I N S T A L L A T I O N
36
CHAPTER
37
4Hardware Installation
OVERVIEW
Rack installation and heat . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Thunderbolt audio interface setup . . . . . . . . . . . . . . . . . . 37
USB audio interface setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
AVB Ethernet audio interface setup. . . . . . . . . . . . . . . . . . 38
Setup for two interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Setup for three to five interfaces. . . . . . . . . . . . . . . . . . . . . 40
Setup for a multi-switch network . . . . . . . . . . . . . . . . . . . . 41
Setup for multiple Thunderbolt and USB interfaces . 42
Setup for web app control . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Audio connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
A typical 1248 setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
A typical 8M setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
A typical 16A setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Syncing S/PDIF devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Syncing word clock devices. . . . . . . . . . . . . . . . . . . . . . . . . . 52
Syncing an AVB network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Syncing multiple AVB audio interfaces connected to a Mac . . . . 54
RACK INSTALLATION AND HEAT
When installing your MOTU audio interface in a
19-inch rack, leave extra space above, below,
behind and on either side of the unit to provide
adequate ventilation and heat dispersion. Do not
install it near other gear that generates excessive
heat.
THUNDERBOLT AUDIO INTERFACE SETUP
Use this setup if you want to use your MOTU
device as an audio interface, and your computer
has Thunderbolt™.
■Use a standard Thunderbolt cable.
■Place it at the end of the Thunderbolt chain (up
to six devices in the chain, not including the
computer).
■See “Software installation” on page 33.
H A R D W A R E I N S T A L L A T I O N
38
USB AUDIO INTERFACE SETUP
Use this setup if you want to use your MOTU
device as an audio interface, and your computer
doesn’t have Thunderbolt.
■Use a standard USB cable.
■Connect to any USB port (USB2.0 or 3.0).
■See “USB2.0 class-compliant operation” on
page 33.
■No driver installation is necessary, (unless you
want to use the web app).
AVB ETHERNET AUDIO INTERFACE SETUP
As an alternative to Thunderbolt or USB, use this
setup if you want to use the your MOTU interface
as an AVB Ethernet audio interface for a recent-
generation Mac (i.e. any Mac with a Thunderbolt
port on it). Mac OS X Yosemite (10.10) or later is
also required for AVB audio I/O.
■Use a standard CAT-5e or CAT-6 cable.
■Connect to the computer’s Ethernet port.
■See “Operation as an AVB Ethernet audio
interface” on page 33.
■No driver installation is necessary.
■Enable at least one AVB stream (item #20 on
page 19).
■Launch the Mac’s Audio MIDI Setup utility to
enable your MOTU AVB interface and set the clock
source and sample rate.
■The number of AVB audio channels that OS X
can handle depends on the speed of your Mac.
■If applicable, see “Syncing multiple AVB audio
interfaces connected to a Mac” on page 54.

Specyfikacje produktu

Marka: Motu
Kategoria: system hi-fi
Model: 8M

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