Lynx Studio Technology LT-TB Users Manual
Copyright © 2014 Lynx Studio Technology Inc.
User Manual
Table of Contents
1 Introduction ............................................................................................................... 1
1.1 Overview ........................................................................................................................ 1
1.2 Features .......................................................................................................................... 1
1.3 In the Box ....................................................................................................................... 1
1.4 Power and Safety Information ........................................................................................ 2
1.5 Rack-Mounting ............................................................................................................... 2
1.6 Operation Requirements ................................................................................................. 2
1.6.1 Audio Equipment Requirements .................................................................................. 2
1.6.2 Computer requirements ................................................................................................ 3
1.6.3 Compatible Firmware ................................................................................................... 4
1.7 Using this manual ........................................................................................................... 4
1.8 Registration .................................................................................................................... 4
2 Getting Started .......................................................................................................... 5
2.1 Unpacking ...................................................................................................................... 5
2.2 Set up .............................................................................................................................. 5
2.3 Cable Connections .......................................................................................................... 6
2.4 Initial Setup .................................................................................................................... 7
2.5 Computer Set Up ............................................................................................................ 7
2.5.1 Cable Setup .................................................................................................................. 7
2.5.2 Driver Installation ........................................................................................................ 8
2.6 Using Multiple Hilos and/or Auroras ........................................................................... 12
2.6.1 Connect the cables ...................................................................................................... 12
2.6.2 Setting Device Order .................................................................................................. 12
2.6.3 Set the Sync Source .................................................................................................... 13
2.6.4 Configure for use ........................................................................................................ 13
2.7 Using LT-TB with other Thunderbolt Devices ............................................................ 14
2.7.1 Bus Powered Devices ................................................................................................. 14
3 Using the Hilo/TB .................................................................................................... 15
3.1 Hilo Driver Devices – Windows Operating Systems ................................................... 15
3.1.1 WDM/Multimedia Applications ................................................................................. 15
3.1.2 ASIO Application ....................................................................................................... 16
3.1.3 Controlling Latency by Changing the Buffer Size ..................................................... 17
3.2 Hilo Driver Devices - Macintosh OS X ....................................................................... 17
3.3 Firmware Updates ........................................................................................................ 18
4 Controlling Hilo ...................................................................................................... 21
4.1 On Power Up ................................................................................................................ 21
4.1.1 Headphone and Monitor Out Volume Control ........................................................... 21
4.2 Changing the Meter Page ............................................................................................. 22
4.2.1 Choosing the Meter Source ........................................................................................ 23
4.3 Getting to the Menu Pages ........................................................................................... 24
4.3.1 Menu Screen conventions: ......................................................................................... 24
4.4 Home Menu .................................................................................................................. 25
4.4.1 Sample Rate ............................................................................................................... 25
4.4.2 Sync Source ................................................................................................................ 26
4.4.3 SynchroLock ............................................................................................................... 26
4.4.4 Optical Out Mode ....................................................................................................... 27
4.4.5 Line In Trim ................................................................................................................ 28
4.4.6 Line Out Trim ............................................................................................................. 28
4.4.7 Digital In Source ......................................................................................................... 29
4.4.8 Output Mix Routing Page ........................................................................................... 29
4.5 Tools Page .................................................................................................................... 40
4.5.1 Restore Default Routing ............................................................................................. 40
4.5.2 Save Scene Button ...................................................................................................... 40
4.5.3 Recall Scene ................................................................................................................ 41
4.5.4 Sample Rate Converter ............................................................................................... 42
4.5.5 DSD Mode .................................................................................................................. 42
4.5.6 Test Tone Function ..................................................................................................... 43
4.5.7 Power Up State ........................................................................................................... 44
4.6 Information Page .......................................................................................................... 44
4.6.1 Digital In Channel Status ............................................................................................ 45
4.6.2 Digital Out Channel Status Button .............................................................................. 45
4.6.3 Frequency Counters .................................................................................................... 46
4.6.4 About Hilo .................................................................................................................. 46
4.7 Display Controls .......................................................................................................... 47
4.7.1 Backlight ..................................................................................................................... 47
4.7.2 Return to Meters ......................................................................................................... 48
4.7.3 Show/Hide Settings ..................................................................................................... 48
4.7.4 Analog VU Reference ................................................................................................. 48
4.7.5 Calibrate Touchscreen ................................................................................................ 49
4.7.6 Knob Settings .............................................................................................................. 49
4.7.7 Standard Menu ............................................................................................................ 50
4.8 Meter Button ................................................................................................................ 50
5 Support ..................................................................................................................... 51
5.1 Lynx Website Support Resources ................................................................................ 51
5.2 Telephone Support ....................................................................................................... 51
5.3 Registering your Hilo ................................................................................................... 51
5.4 Return Policy ............................................................................................................... 51
6 Appendices ............................................................................................................... 52
6.1 Battery Information ...................................................................................................... 52
6.2 Setting Trim Pots ......................................................................................................... 52
6.3 XLR Connector Wiring and Adapters ......................................................................... 53
6.3.1 Balanced Connections ................................................................................................. 53
6.3.2 Unbalanced Connections with Twisted Pair Cable ..................................................... 53
6.3.3 Unbalanced Connections with Single Conductor Cable ............................................. 54
6.4 Setting the Monitor Out Level Mode ........................................................................... 55
7 Troubleshooting & User Tips ................................................................................. 56
8 Specifications ........................................................................................................... 57
9 Certifications ............................................................................................................ 59
10 Warranty Information ............................................................................................ 62
1 Introduction
Thank you for choosing Lynx Hilo for your audio needs. The device you have received has been precision engineered
to provide the very best audio quality possible, coupled with an innovative, intuitive user interface, and a unique and
powerful feature set. Hilo is one of the first pro audio devices on the market that utilizes a full-color LCD touchscreen
for control, metering and configuration. Far from an unnecessary bit of “eye candy”, the touch display allows quick
routing and setup, as well as a variety of accurate metering and measurement tools. New features will be available in
the form of downloadable firmware updates, keeping Hilo responsive to your needs for many years to come.
1.1 Overview
Hilo represents the zenith of Analog conversion, improving on Lynx’s famous Aurora converters with state-of-the-art
components and design techniques. The innovative design of the analog stage and converter topology allow ultra-low
noise and distortion specifications, producing an unprecedented level of clarity and depth-of-image. Much more than a
“me too” stereo converter, Hilo actually features three unique sets of analog outputs, each with their own Digital-toAnalog converters, and independent routing. Main Outs, Monitor Outs and Headphone Outs all can feature a unique
combination of sources with independent level controls. This version of the manual is specifically for the Hilo/TB, the
Hilo that interfaces to a computer via Thunderbolt. An Alternate version connects via USB.
1.2 Features
Hilo also has an extremely generous set of Digital I/O options. Apart from AD/DA conversion tasks, Hilo is one of the
most powerful digital format converters/routers on the market. Digital formats include stereo AES/EBU, Stereo S/PDIF
Coaxial, Stereo Optical S/PDIF which is switchable to 8-channel ADAT lightpipe, and 16 channels of Thunderbolt
communication to a host computer. Any digital input can be routed to any analog or digital output, and all digital
outputs can have unique combinations of source inputs.
The unique 480 x 272 pixel LCD touch screen display makes Hilo stand out from other pro audio converters. Never
before has establishing parameters and routing channels been so quick and intuitive in a high-end converter. Not only
are clear and accurate meters provided, but the user can select from several meter styles. The Hilo display and features
can be updated via simple computer firmware update tools, easily accessible from the Lynx website. Hilo’s feature set
and display options will evolve in response to user feedback and the imagination of Lynx engineers.
Hilo is also a game changer in terms of flexibility. It is well suited for recording studio use, the home recordist,
mastering, audio analysis, home theater/audiophiles, as well as field recording. With AC or battery-powered DC
operation, Hilo can be used “for here” or “to go”. With its lightweight, portable design, no longer does the
discriminating user have to choose between top rung sound quality and convenience.
1.3 In the Box
Before proceeding with the Hilo setup, let’s make sure that you received everything that was included with the
purchase. In the Hilo box, you should find:
• Hilo AD/DA converter
• AC Power Cord
• Hilo Quick Start guide
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1.4 Power and Safety Information
To prevent fire or shock hazard, do not expose this equipment to rain or moisture. Do not block any of the ventilation
openings. Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a
third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet. Protect the power cord from being walked on or pinched,
particularly at the plugs, convenience receptacles, and the point where they connect to the Hilo. Unplug this device
during lightning storms or when unused for long periods of time.
Hilo utilizes a state-of-the-art universal power supply. The power supply will auto-detect the voltage from 100V to
240V and conform appropriately. No manual voltage adjustment is necessary.
1.5 Rack-Mounting
Hilo can be mounted in standard studio equipment racks using an optional two-space rack shelf available from Lynx.
1.6 Operation Requirements
To operate Hilo successfully with your existing equipment, first let’s verify that you have compatible elements for best
results.
1.6.1 Audio Equipment Requirements
Hilo features a wide variety of audio I/O formats. Compatibility with these formats are, of course, only important for
I/O ports that you intend to use.
• Headphones: The Hilo headphone jack (PHONES) is suitable for driving stereo headphones through a ¼”
TRS connection. Any standard set of headphones should work with Hilo.
• Line Inputs and Outputs: Hilo can operate with balanced or unbalanced, line-level analog audio equipment
(power amps, powered speakers, headphone amps, microphone pre-amps, mixing boards, etc.) operating at
trim levels of +18 dBu; +20 dBu; +22 dBu; +24 dBu; +0 dBV; +2 dBV; +4 dBV and +6 dBV . The LINE INs
and LINE OUTs use XLR connections.
• Monitor Outputs: The Hilo MONITOR outputs can operate with balanced or unbalanced, line-level analog
audio equipment and use ¼” TRS jacks.
• AES/EBU Inputs and Outputs: The Hilo AES IN and OUT ports should work with any AES/EBU
compatible device at standard sample rates between 44.1 kHz and 192 kHz. The AES ports utilize XLR
connections.
• SPDIF Inputs and Outputs: Hilo supports coaxial (electrical) SPDIF connections on RCA jacks, or SPDIF
Optical signals on Toslink connections.
• ADAT Lightpipe: Hilo’s Toslink Optical connector (S/PDIF/ADAT OPT.) can be software switched
between 2-channel SPDIF operation and 8-channel ADAT Lightpipe operation. When ADAT is selected, each
input and output port supports up to eight channels at sample rates of 44.1 kHz and 48 kHz, four channels at
sample rates of 88.2 kHz and 96 kHz, or two channels at sample rates of 176.4 kHz and 192 kHz.
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1.6.2 Computer requirements
Hilo is configured to operate with Mac or PC computer systems via a Thunderbolt connection. If one wishes to use this
connection, check the system requirements below to insure compatibility.
There are three essential elements that must be met for compatibility with the Hilo with Thunderbolt:
1. The host computer must have one or more compatible and functional Thunderbolt ports.
2. The host computer must meet the system requirements necessary for correct functioning of the LT-TB.
3. The Hilo must have firmware revision 6 or above.
A list of Intel approved Thunderbolt computers, motherboards and components is available online at
www.thunderbolttechnology.net > Products
It also is important to note that most professional audio applications place significant demands on your computer’s
resources, and it is therefore recommended that you meet or exceed the recommended system requirements for your
Digital Audio Workstation or audio playback software, which will likely be greater than those listed for Hilo. Please
refer to your audio software’s documentation for more information.
1.6.2.1 Windows
• Intel Core 2 @ 1.6 GHz, or AMD equivalent
• PC or laptop manufactured in or after 2013
• 1GB RAM
• One functional Thunderbolt port
• Windows 7 (32-bit or 64-bit) or Windows 8
• A connection to the Internet to download the Lynx Driver (this can be from a different computer than the one
that the Aurora/TB is connected to).
NOTE: The Hilo/TB is not supported under Windows 95, 98, ME, Windows 2000, Windows XP or Windows Vista.
Windows installed via BootCamp is not supported.
1.6.2.2 Macintosh OS X
• Any Intel Processor based Mac or MacBook computer running OS X 10.8.5 or higher
• 1GB RAM
• One functional Thunderbolt port
NOTE: Hilo’s Thunderbolt operation is not compatible with OS X 10.7 or below.
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1.6.3 Compatible Firmware
If the LT-TB is being installed into the Hilo, it is critical that the Hilo have firmware revision 6 or higher. Before
installing the card, we recommend verifying the firmware version, and updating it through the USB connection to the
computer, before replacing the LT-USB card in the Hilo with the LT-TB.
To verify the firmware revision, on the Hilo front panel navigate to the Information Screen, then tap “About Hilo”. If
the Hilo firmware version is less than 6 it will need to be updated. The appropriate firmware updater can be
downloaded from the lynxstudio.com website: Support > Downloads > Product = Hilo.
After programming the Hilo with updated firmware, then install the LT-TB card per the instructions in the LT-TB
Quickstart.
1.7 Using this manual
To insure smooth sailing with your new product, we recommend reading through the entire manual before using Hilo.
Thereafter, use the manual as a reference as needed when questions arise.
The following typographic conventions are used in this manual:
• ALL UPPER CASE TEXT refers to a specific parameter selection control (i.e. SYNC SOURCE) or a cable
connection.
• Text in quotation marks indicates a parameter selection value or menu option (i.e. “EXT”).
• Phrases, such as: Start > Programs > Lynx Studio Technology use the greater than symbol (“>”) to indicate
multiple menu options or mouse selections within a software control context.
1.8 Registration
Lynx is committed to providing you with the best service possible. To help us serve you better, please be sure to
register your Hilo.
Register on the web at: https://www.lynxstudio.com/support_register.asp
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2 Getting Started
Hilo was designed to be a product that is so easy to use that this section of the manual would scarcely be necessary.
However, it is quicker to learn how the device works in one go, then to spend precious minutes figuring things out by
randomly pressing buttons. We recommend reading this section thoroughly, before putting Hilo to serious use.
2.1 Unpacking
Before setting up Hilo for use, remove it from the box and verify that the box contents described in section 1.3 are all
present.
If so, connect the Hilo AC power cord to a grounded AC Outlet, or power distribution
unit. Switch on the power switch on the back of Hilo (note: the | position on the power
button is “On”)
If it does not, verify that the selected AC power source is operational. If it is and the unit still will not power up, please
contact Lynx technical support.
If Hilo DOES power up, move on to Set up…
Next press the front panel standby switch and verify that Hilo powers up.
2.2 Set up
Hilo was designed to be adaptable to a variety of operational environments: on a desktop for Audiophile enthusiasts, in
an equipment rack for recording studios, over a mixing console for a mastering engineer, etc. If Hilo is to be used on a
desktop or other flat surface, it is best to leave the pre-installed rubber feet in place. These are designed to prevent
scratching of Hilo or the surface that it is set upon.
In a recording studio context, where space is at a premium, one may choose to rack mount Hilo. The Hilo Rack Kit is
available for purchase from authorized Lynx Dealers, or directly from the lynxstudio.com website. The Hilo Rack Kit
will include instructions for properly mounting the Hilo.
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2.3 Cable Connections
Hilo features a treasury of I/O types, suitable to accommodate whatever audio devices you wish to integrate.
q Thunderbolt port
Use a copper or optical Thunderbolt cable to connect Hilo to a Thunderbolt equipped computer.
Cable Concerns: The LT-TB has been tested with standard optical and copper Thunderbolt cables. For Copper cable,
one can use lengths up to 3 meters (9.8 feet). Optical cables, while somewhat more difficult to acquire, do promise
operation with much longer cable lengths, up to 100 meters.
w LINE IN
Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal source. This input is not suitable
for use with microphones, unless a microphone pre-amp is used to get mic-level signals up to line-level. Cable
Concerns: If your signal source is unbalanced, consult Appendix to determine if your cables are wired correctly for use
with Hilo. For unbalanced cables, 4.5 meters (15 feet) is the maximum recommended length.
e LINE OUT
Use standard XLR cables (i.e. mic cables) to connect to a line level, balanced signal destination. Cable Concerns If
your signal source is unbalanced, consult Appendix to determine if your cables are wired correctly for use with Hilo.
For unbalanced cables, 4.5 meters (15 feet) is the maximum recommended length.
r MONITOR OUT
Use standard ¼” cables. TRS if balanced, standard ¼” TS if unbalanced.
Cable Concerns: For unbalanced cables 4.5 meters (15 feet) is the maximum recommended length.
t AES IN/OUT
Use AES XLR cables (110 Ω). Insure that the connected device supports AES3 or AES/EBU. Cable lengths of up to
100 meters (328 feet) are acceptable.
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y S/PDIF/ ADAT Optical
Use standard Toslink optical cables, of lengths up to 9 meters (30 feet).
u SPDIF Coaxial In Out
Use 75 Ω S/PDIF cable with RCA connections. Recommended maximum length is 6 meters (20 feet)
i Wordclock In/Out
Use standard 75 Ω wordclock cable with BNC connectors. Recommended maximum length is 9 meters (30 feet).
o Battery In
DC 4-pin XLR battery pack connector. Supports 9-18 volts DC. See Appendix 5.1 for more information.
a IEC Power connector
Use the included AC power cord
In Addition to the rear panel jack pack, there is one remaining cable connection on the Hilo front panel. The PHONES
jack is a standard ¼” TRS connector, and is capable of driving the full range of stereo headphones available.
2.4 Initial Setup
It is important to set up Hilo in the proper order to avoid any speaker damage calamities. Follow these steps for the best
results:
• Connect the AC power cord to Hilo and to a quality, surge-protected AC power source. Check the Power and
Safety section of this manual for additional information.
• Connect cables from Hilo to whatever audio devices Hilo will be connected to. These could include powered
speakers, mixing consoles, power amps, microphone pre-amps, effects processors, etc.
• Make sure volumes are turned down on connected equipment to avoid excessive level being sent to the
equipment during setup.
• If the context of use is as a standalone AD/DA converter that will not be connected to a computer, skip ahead
to section 3, and in particular section 3.4.8: Output Mix Routing Page, for appropriate routing assistance.
• If using Hilo with a Mac or PC computer, follow the installation procedure below.
2.5 Computer Set Up
Hilo/TB should be connected to the computer prior to installing the drivers. If one intends to use multiple Hilos with a
single computer, this will be detailed in Section 1.14. For the instructions below, it will be assumed that there is a
single Hilo being installed.
2.5.1 Cable Setup
The LT-TB has been tested with standard optical and copper Thunderbolt cables. For Copper cable, one can use
lengths up to 3 meters (9.8 feet). Optical cables, while somewhat more difficult to acquire, do promise operation with
much longer cable lengths, up to 100 meters.
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Thunderbolt cables are somewhat unique in that they contain signal transmission electronics. For this reason it is
important to practice good cable management, avoid crimping or allowing cables to be compressed. If such practices
are adhered to, these cables should provide many years of faithful service.
Connect a cable from the Thunderbolt port on your computer to either of the ports on the back of the Hilo/TB. Then
turn the unit ON.
2.5.2 Driver Installation
Lynx Drivers and firmware updaters are updated regularly. The most current versions can be easily downloaded from
the Lynx Website: http://www.lynxstudio.com/ > Support> Downloads. Make sure that you choose LT-TB as the
“Product”. Choosing Hilo as the product will not give access to the drivers that you will require for this system.
If you are updating an existing driver, the driver installation program will automatically remove the old driver when the
new one is installed. When installing drivers, make sure that all software programs, especially audio applications, are
closed.
2.5.2.1 Windows 7 (32-bit or 64-bit) or Windows 8
1. On first connection, you may receive a prompt that New Thunderbolt Devices have been attached. Click this
window to have the system connect to the Hilo as a Thunderbolt Device.
2. When the Select Device to Connect Window comes up, Choose “Always Connect”. If there are multiple Hilos
connected at install time, you will need to do this for each unit. (If this is a reinstall, you will not see this
dialog box. Just continue on with the subsequent steps).
3. Locate the LT-TB driver from your downloaded files. The file name will be V2Setup##.exe where ## is the
build number of the driver.
4. Double-click the installation file to start the driver installation.
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5. Accept the License Agreement by clicking “Accept”
6. The installer will extract the necessary files to the C:\Lynx directory. Click “Extract” from this window
7. If you are prompted to let the program make changes to the computer, select “Yes”
8. You will next see the driver Install dialog. Click “Install”
9. You may get a Windows Security Dialog Bog. If so, select “Install”
10. Driver installation will proceed
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11.
Finally you will receive a confirmation that the install completed successfully
12. The Hilo is ready to use, no reboot necessary.
2.5.2.2 OS X
1. Locate the LT-TB driver from your downloaded files. The file name will be Lynx_OSX_xxxx.zip. Double-
click to expand the installer package.
2. Double-click “Lynx OSX.pkg” that was expanded from the step above. This will start the driver installation.
3. Click “Continue” at the “Install Lynx CoreAudio Driver Installer” dialog box.
4. Click “Continue” for the Software License Agreement after reading it.
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5. Click “Agree” from the next Window
6. Click “Install” in the Standard Install Window
7. Type in Password and click “Install Software”
8. Click “Continue Installation” for prompt about restarting computer after the installation
9. The installation will continue
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10. When complete, you will be prompted to restart the computer
After restart the driver will be installed and ready for use.
2.6 Using Multiple Hilos and/or Auroras
Up to six Lynx Aurora/TB and/or Hilo/TB interfaces can be daisy chained to a single Thunderbolt port. Each unit will
be addressable independently, and the combined I/O can be used by a DAW application.
Connecting multiple units requires consideration of the following:
2.6.1 Connect the cables
With the computer OFF, the first step is to connect the Thunderbolt and wordclock cables.
You will need one Thunderbolt patch cable for each Lynx LT-TB Interface in the system.
One cable should be connected from the computer’s Thunderbolt port to either port on the first unit. Then daisy chain
one at a time, from the open Thunderbolt port on unit 1, to either port on unit 2, out from unit 2 to unit 3, etc. It doesn’t
matter which port “receives” and which port “sends”.
Next we connect wordclock cables to each unit. If Hilo #1 is going to be the clock master, connect a wordclock cable
from unit #1 Wordclock Out, to unit #2 Wordclock In, then unit #2 Wordclock Out to unit #3 Wordclock In. etc.
If clock distribution is utilized, a single wordclock cable will go from each Hilo’s or Aurora’s “Wordclock In” port to
an output on the clock distributor. The Hilo and Aurora are self terminating, so there is no need for hardware
termination.
Make sure that the wordclock cables are 75Ω, and as close to the desired length as possible to avoid clock signal phase
issues.
2.6.2 Setting Device Order
When mixing Hilo/TB and Aurora/TB interfaces, it is possible to establish the device order for the Aurora units.
Information is available about this process from the Aurora/TB manual in section 8.1.2.
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2.6.3 Set the Sync Source
Whenever multiple Hilos and Auroras are used in a Thunderbolt daisy-chain, it is critical that clock synchronicity is
achieved. In the vast majority of cases we would recommend one of the following clock schemes:
- Use a master clock with multiple clock outputs, ideally as many outputs as there are Hilos in the chain, and
connect each Hilo to a unique word clock connection. In this case, ALL of the Hilos should be set to “EXT”
as the SYNC SOURCE. In this state, it is important to set the Sample Rate on your clock master, to match the
sample rate of your audio file or audio project.
- Use Hilo #1 in the chain, and have the other units slave in a clock daisy chain. Connect a word clock cable
from the WORD CLOCK OUT of unit #1, to Clock IN of unit #2, Clock OUT from Unit #2 to Clock IN of
Unit #3, etc. Set unit number one to “INT” as the SYNC SOURCE and all of the other units to “EXT”. In this
state, the system should respond to sample rate changes within the computer automatically.
NOTE: When 3 or more Hilos and/or Auroras are used in a single system, some form of clock distribution is
recommended to insure phase coherence of the clock signal.
2.6.4 Configure for use
In Windows, one can use the Sound section of Control Panel to select whichever unit is desired as the default playback
device. Unfortunately, Windows is known to jumble the device order here. To determine which unit in the list is the
one that you wish to use, follow this process:
* From Control Panel > Sound > Playback, you will see all of the Hilo Devices. Play 1+2 in this list will be labeled as
“Speakers”. Click one of them to select.
* Click Properties > Advanced
* Click the “Test” Button
* Look at the Hilo Meters. Whichever shows Meter activity for the first pair of channels when “Test” is clicked
corresponds to that instance.
* When you determine the desired unit, from the Playback tab of SOUND, right-click that device and select “Set as
Default Device”.
When using ASIO applications, all of the Lynx Interfaces will be presented as a single ASIO device, labeled “Lynx
ASIO”. When “Lynx ASIO” is selected as the current audio device, all of the I/O from all of the interfaces will be
presented in order. The device order and channel mode of each interface determines its position in the list of I/O. ASIO
devices will be labeled with the Device ID, then the Play or Record channels. For instance:
“1: Hilo Play 1+2” is for Unit 1, Channel 1+2
“2: Hilo Play 3+4” is for Unit 2 Channels 3+4 etc.
In OS X, all the units must be configured into a single
“Aggregate Device” in order for their combined I/O to be
accessible to an audio application.
An Aggregate Device is created from Applications >
Utilities > Audio MIDI Setup in OS X. Make sure that
the Audio Window is open. Click the “+” button at the
bottom of the window to create a new aggregate device.
You can name it whatever you wish, or accept the default
name. Click to check each of the Lynx Interfaces that you
wish to be combined into this aggregate device. Up to six
interfaces can be added. Make sure that the Drift or
Resample box is un-Checked for each selected interface.
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Also make sure that the checkboxes for “Built-In” audio are un-checked.
Now, your multi interface LT-TB Aggregate Device is ready to use from within your favorite Audio application.
2.7 Using LT-TB with other Thunderbolt Devices
The Thunderbolt specification requires that certified units can allow for daisy chaining other Thunderbolt devices.
Common computer accessories like hard drives, video equipment, and expansion chassis’ can be connected to the
Thunderbolt Daisy Chain, either before or after your Lynx Interface(s). Up to six devices can be daisy chained together
off of a single Thunderbolt port. The Thunderbolt specification also allows for a separate video stream, so that in
addition to the 6 devices a monitor can be added at the end of the chain.
2.7.1 Bus Powered Devices
Some Thunderbolt devices operate from Bus Power, where they receive adequate voltage from the Thunderbolt
connection to drive the device, as an alternative to having a dedicated power supply. The LT-TB does support such
devices, but it is necessary to connect a 12V DC power supply to the LT-TB card prior to running such a device. The
appropriate AC Adapter is available from Lynx dealers, or directly from the lynxstudio.com website. The part number
is LYN-ACPS1000.
When connecting a bus-powered device, connect the AC adapter to the 12V DC port on the LT-TB equipped interface
that precedes the bus-powered hardware in the Thunderbolt daisy chain.
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3 Using the Hilo/TB
With the LT-TB correctly installed in your computer, you can begin to use the Hilo with most popular third-party audio
applications. In this section we will explore setting up the Hilo/TB system for different contexts of use.
3.1 Hilo Driver Devices – Windows Operating Systems
Hilo was designed to provide maximum compatibility with the most popular audio and multimedia applications that
use the Windows MME, DirectSound, ASIO and OS X Core Audio driver standards. It is crucial that the applications
are set up correctly for optimal operation.
The Windows drivers for the LT-TB support two dominant driver models, WDM (which include both MME and
DirectSound) and ASIO.
WDM was developed by Microsoft and is used most typically by media playback applications, such as Windows
Media Player, iTunes, Quicktime Player, WinDVD, PowerDVD, etc.
ASIO was developed by Steinberg, and was designed to address the low-latency and high channel count needs of Pro
Audio and Music Production. ASIO is an option for Audio Production applications such as Pro Tools, Cubase/Nuendo,
Sonar, Samplitude/Sequoia, Audition, etc. These applications may also support MME or DirectSound, but when the
option exists, we recommend using ASIO for the best performance.
3.1.1 WDM/Multimedia Applications
Hilo can be used as a playback device for most popular multimedia, home theater and consumer audio applications.
Some such applications allow selection of specific playback devices. In these cases, 8 Hilo stereo play devices will be
available to choose from. These devices are labeled as TBT Play 1&2; TBT Play 3&4; TBT Play 5&6; TBT Play 7&8;
TBT Play 9&10; TBT Play 11&12; TBT Play 13&14; TBT Play 15&16. It is generally advisable to choose TBT Play
1&2 with any WDM program. This will insure that audio streams to every analog and digital output on Hilo. If you
wish to mute a stream to a particular output, you can do that from the Output Mix Routing Page, as described in section
3.4.8 Output Mix Routing Page.
When output device selection is not an option, it can be assumed that the application uses the Windows default audio
device. In this case, “Lynx TBT Play 1&2” should be established as the system playback default:
With Windows Windows 7 / Windows 8 navigate to:
Start > Control Panel > Sound > Playback. Right-Click on “(Speakers) LT-TB” and choose “Set as default
device”.
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3.1.2 ASIO Application
When using an application that supports the ASIO driver standard, one must specify the Lynx ASIO driver as the
active audio device from within the audio software. Once that is established, eight stereo input and output devices will
be available for use within the application.
When using an ASIO compatible program, the appropriate ASIO device must be selected from a settings or options
menu in the application. The correct choice would be “Lynx ASIO”
Many ASIO applications provide access to an ASIO Control Panel for the device being used. For an LT-TB equipped
Hilo, this button will launch the Lynx ASIO Control Panel.
From this panel, the ASIO buffer size and system latency can be established
conveniently within the audio software application. The following parameters can be
altered from the Lynx ASIO Control Panel:
1. Buffer Size - This control allows the size of the ASIO buffer in samples to be
established. The buffer size is the primary factor in the amount of latency that a user
will experience when using the Hilo/TB. In the next section this is explored in depth.
2. Latency – Displays the amount of latency in milliseconds that is the result of the
selected buffer size at the active sample rate.
3. Double Buffer Output – When checked, an additional output buffer is used. This
does increase playback latency, but relieves some strain on the CPU. It is ON by
default and recommended, especially if any performance issues are encountered.
4. Ignore Direct Monitor Requests - This switch causes the LT-TB driver to
disregard Direct Monitor commands from an ASIO software application. Since Direct
Monitor calls can assign and mute monitor sources in the Hilo, setting this parameter
to “ON”, can prevent mixer settings from being changed when an ASIO application is launched.
5. DM Uses Active Devices - This switch sets the Direct Monitoring scheme for the application. When unchecked, all
devices (active or not) may be used for Direct Monitoring. When checked, only active devices, or devices assigned to
software busses, are used for Direct Monitoring. This gets around a problem where Cubase & Nuendo might select the
wrong Direct Monitoring input or output if non-contiguous devices are active.
This switch is ON by default for Nuendo 2 & 3 and Cubase 2 & 3 and OFF by default for all other applications.
6. Maximum Channels – This switch determines how many ASIO device channels will be available to the
application. This is an application specific parameter. If different ASIO applications are used at different times, it is
possible to have them set differently.
The primary purpose for this switch is to increase CPU efficiency and to facilitate multi-client operation. The default
state is “unlimited”, which means with a Hilo/TB 8 stereo devices.
Most audio software allows the user to specify how many ASIO devices are used, generally in a settings or options
menu. There are some applications however that grab control over ALL of the ASIO devices in the system. This can be
problematic because it uses more CPU power than is necessary, and also because there are no driver devices available
to be used by another application (multi-client operation).
In these cases, setting the MAXIMUM CHANNELS switch to the desired number of channels, frees up some CPU
overhead, and allows another application to access the channels that the ASIO application is not using.
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3.1.3 Controlling Latency by Changing the Buffer Size
Latency in an audio interface can be defined as the time required to process a sample from an application to the
interface’s audio output. A number of factors determine the achievable latency performance of a Hilo/ TB system:
processor speed, operating system, sample rate, number of utilized record or play channels, system efficiency, etc.
Latency can be manipulated by changing the size of the buffers used to transfer data to and from the LT-TB. The
higher the buffer size, the less work the computer has to do to stream audio to the hardware. However, a higher buffer
results in more latency. Also, the higher the sample rate, the higher the buffer size needs to be. For instance, a buffer
size of 128 samples at a sample rate of 44.1 kHz results in 2.9 milliseconds of latency. However, at 96 kHz, a buffer
size of 128 = 1.33 milliseconds. Therefore the buffer size needs to be increased as the sample rate increases to maintain
the same level of performance. If the buffer size is too low, you can experience clicks, pops or distortion in the audio.
This is the result of buffer under-runs, when the audio buffer is momentarily depleted because the computer cannot
deliver samples quickly enough to keep it filled.
Why is latency important? It isn’t in every case. Here are the main conditions where low latency is important:
* Software input monitoring. This is where you are monitoring through your audio software the input signals to be
recorded. The software is re-directing the input signal back out to a play device. If the buffer is too high here the
performer will hear a noticeable delay between the notes they are playing and hearing the sound back through the
computer. With Hilo, zero latency hardware monitoring is available as an alternative to software monitoring. See
Section 3.4.8: Outputs Mix Routing Page.
* Virtual Instruments. Generally this would involve using a software synthesizer or other virtual sound source as an
alternative to dedicated hardware like a keyboard or tone module. Frequently one would play these instruments with
some sort of MIDI controller. The delay between a key being struck and hearing the resulting note from the virtual
instrument is a function of latency.
* Mix Automation. Virtually all DAW applications feature some sort of Mix Automation, and most allow an external
Mix surface or MIDI controller to facilitate mixing within the software environment. Whether using onscreen faders or
a MIDI surface of some sort, latency will determine the delay between manipulating a fader or knob, and that move
being reflected in the project.
3.2 Hilo Driver Devices - Macintosh OS X
Hilo will operate as a Core Audio device under OS X after the driver has been installed. Core Audio is the dominant
audio driver model for OS X, and is used for media playback applications as well as Pro Audio applications.
3.2.1.1 OSX Audio Applications
Hilo can be used as a playback device for most popular multimedia, home theater and pro audio applications. Some
such applications allow selection of specific playback devices. In these cases, a Lynx Hilo TBT output device can be
selected from the appropriate device selection menu.
In cases where the playback software does not provide access to output selections, the default output devices for the
operating system will be used. In OS X, the audio out default device can be established from Applications > Utilities >
Audio MIDI Setup.
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