Auri System Manual

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Introduction

Auri™ powered by Ampetronic and Listen Technologies, is the first Auracast™ broadcast audio-based solution for assistive listening. We have developed Auri to let venues and end users adopt Auracast™ broadcast audio technology now with both dedicated Receivers and direct compatibility with newly emerging devices such as hearing aids, earbuds, headphones and mobile phones.

Auri is a comprehensive Assistive Listening System (ALS) that sends high quality, low-latency, multi-channel broadcast audio to an unlimited number of Auracast compatible Receivers and devices.

The system includes Transmitters designed for professional installation, with balanced mic/line inputs and optional integrated Dante. Transmitters broadcast audio to a large area, from two radios with flexible routing options that cover a wide range of project needs. Multiple Transmitters can be used to increase coverage or channel count.

Receivers and Docking Stations meet accessibility needs for all users and allow implementation now while end user devices adopt the latest Bluetooth standards.

The Auri Manager software application provides a user-friendly interface for discovery, management and configuration of all devices over the network.

Auri System Components

Auri TX2N / Auri TX2N-D Transmitter

The Auri TX2N Auracast Transmitter is the heart of an Auri system, providing long range, low latency Auracast broadcast audio.

A factory option for integrated Dante input is available.

Auri RX1 Receiver

The Auri Audio Receiver is a state-of-the-art assistive listening Receiver, allowing venues to provide hearing assistance to guests while meeting compliance with disability and accessibility requirements.

Auri-D4 / Auri-D16 Docking Station

The Docking Stations allow for easy charging and management of Auri Receivers and are available in 4 or 16 unit options, with accessories such as the Docking Station case and intelligent cable management unit for the AURI-D16.

Auri Manager Software Application

The Auri Manager software for Windows® makes setting up the Auri system simple. Easily configure a single device or manage a large system deployed across multiple locations. Auri™ Manager supports automatic discovery, full control and software updates for network-attached Transmitters, charging docks and docked Receivers.

Accessories

A range of compatible accessories are available, including ear speakers and headphones, neck loops and signage.

Safety Instructions

Important Information and Intended Use

Read the following information before you use your Auri System.

This system is a Bluetooth Low Energy Audio Broadcast system operating in the 2.4 GHz frequency band from 2.402 GHz to 2.480 GHz.

The system is designed for use in applications such as assistive listening, audio description and language interpretation/translation. Any application not named in the instruction manual is considered improper use. No liability is accepted for damage arising from improper use or misuse of this product and any related accessories. Before putting the products into operation, please observe the respective country-specific regulations.

Product labeling information such as serial number, manufacturer, and additional regulatory information is found on the product label on the devices.

Important Safety Instructions

Read and keep these safety instructions and the instruction manual of the product. Always include all instructions when passing the product to third parties.
Heed all warnings and follow all instructions.
This product is designed to amplify audio to a high-volume level which could potentially cause hearing damage if used improperly. To protect your hearing make sure the volume is turned down before putting on the headset, then adjust the volume to the minimum setting required to hear clearly. Do not allow children or other unauthorized individuals to access this product without supervision.
Before using this product with an implantable or other medical device, consult your physician or manufacturer of your implantable or other medical device. Always make sure you are using this product in accordance with the safety guidelines established by your physician or the implantable device manufacturer.
Do not expose to direct sunlight for long periods of time.
Do not store near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.
Do not expose this apparatus to rain or moisture.
Clean only with a dry cloth. Cleaning fluids may affect the equipment.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, when the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Battery

Safety Instructions for Lithium Polymer Battery

This product uses a Lithium Polymer battery 3.7V, 750 mAh. Use only the battery that came with your device or a replacement battery from the manufacturer designed for use in this device.

Caution – risk of fire or explosion if the battery is replaced by an incorrect type.

Do not dismantle, open or shred secondary cells or battery.

Do not expose cells or battery to heat or fire. Avoid storage in direct sunlight.

Do not use any charger other than that specifically provided for use with the equipment.

Defective or exhausted battery should never be disposed of as municipal waste. Return old batteries to the battery supplier, a licensed battery dealer or a designated collection facility. Do not incinerate batteries.

Do not replace the batteries in potentially explosive environments, such as rooms where flammable liquids or gasses are present.

Lithium batteries have limited lifetimes. Any Lithium battery that shows any signs of damage, including swelling should be properly discarded immediately.

Notes on Disposal

The symbol of the crossed-out wheeled bin on the product, the batteries and/or the packaging indicates that these products must be disposed of separately at the end of their operational lifetime in accordance with the national legislation. For packaging disposal, please observe the legal regulations on waste segregation applicable in your country.

The separate collection of waste electrical and electronic equipment, batteries and packaging is used to promote reuse and recycling and to prevent negative effects caused by e.g., potentially hazardous substances contained in these products. Herewith you make an important contribution to the protection of the environment and public health.

Transmitter (AURI-TX2N / AURI-TX2N-D)

The TX2N Transmitter is the heart of an Auri system, providing long range, low latency Auracast broadcast audio.

A pair of balanced switchable mic/line level inputs or an optional integrated two channel Dante interface allow a single stereo or two mono audio sources to be routed in a variety of ways to one or two broadcasts.

For a full description of features and configurations see the Auri Manager section of the handbook.

Unpacking

Unpack all contents from the box:

1x AURI-TX2N or AURI-TX2N-D Transmitter

1x Universal mounting bracket

3x Euroblock connectors

1x 1.8 m (6 ft) Cat6 cable

1x Quick Start Guide and Safety Data Sheet

Installation

Requirements

A Phillips head screwdriver is required for the captive retaining screw on the mounting bracket.

Fixtures and fittings such as electrical back boxes, screws and wall plugs will be needed, dependant on the install location.

A power supply is not included, if PoE is not available then a USB-C supply capable of delivering at least 500mA will be required.

Initial Setup

Remove the mounting bracket from the Transmitter, to do this you may need to loosen the retaining screw, then firmly slide the bracket away from the Transmitter.

Before installation it is recommended to do some basic setup of the Transmitter to ensure it is operating as required.

By default the Transmitter will be set with both inputs at line level, with nominal gain and AGC enabled. The two inputs will be summed into a single 24 kHz mono broadcast, named “Auri [serial]-1”.

Apply power (USB-C or PoE), plug a line level audio source in to one of the inputs and confirm that the broadcast can be picked up by an Auri Receiver or Auracast enabled device.

Locating the Transmitter

Determine a suitable installation location for the Auri Transmitter. This should be chosen to ensure good coverage of the intended listening area for a range of different receiving devices.

Transmitters should be installed at a height of 6 to 10 feet (1.8 to 3 metres) on a wall or ceiling and the Auri logo must always be facing into the room. Where users may face in multiple directions the Transmitter should be placed central to the coverage area. If all users will be facing in the same direction, such as in an auditorium, it is recommended to locate Transmitters in front of the users so that the Receivers have good line of sight to the Transmitter.

When multiple Transmitters are used for larger coverage areas they should be spaced with an overlap of approximately 20% on the coverage for the least sensitive receiving device that is to be used in the space.

The Transmitter range will be affected by the sensitivity of the receiving device, different building environments and the amount of other devices operating in the same frequency band. In larger or more complex spaces it is advisable to carry out a site test to confirm best placement and number of transmitters needed for full coverage.

Range will be decreased when Receivers are covered or obstructed, for instance a single earbud or hearing aid will have much greater range with line of sight to the Transmitter, for this reason in larger spaces at least two Transmitters will provide much greater range and consistency of coverage.

Cabling

Once the install location has been determined, make sure there is a cable route established and run the required cables. As a minimum power (USB-C or PoE) and at least one source of audio (balanced mic/line or Dante) are required. A permanent network connection is recommended for configuration and ongoing management.

Installing the Bracket

The mounting bracket supports a range of standard UK, EU and US electrical boxes, VESA 75 or direct mounting to a wall or ceiling. A minimum of two screws should be used to secure the bracket.

Rear or top cable entry is possible, depending on your install location.

Note that the bracket must be installed such that the Transmitter is facing into the room as coverage to the rear of the Transmitter is much lower.

With the bracket installed and cables terminated, hold the Transmitter close to the bracket and plug in the cables, a set of cable tie posts are provided to secure cabling and add strain relief.

Align the Transmitter below the bracket and push it upwards until you hear a click. The cable tray cover should be located in small slots at either corner.

Tighten the retaining screw at the top of the bracket.

Configuring the Transmitter

With the final audio sources being connected, ensure there are signals representative of the intended use of the Transmitter, such as someone speaking into a microphone, or AV content being played.

As a minimum it is recommended to review the audio input mode and levels and to rename the broadcast, the Auri Manager software is required for configuration of the Transmitter. See the Auri Manager section of the handbook, and “Minimum Transmitter Setup” for more information.

The Transmitter output power should be adjusted to suit the install environment, in smaller spaces the Transmit Power should be reduced to avoid excessive signal being broadcast into adjacent areas. Where there are lots of Auracast systems operating in close proximity careful management of output power will result in better performance and a cleaner experience for the end users. Coverage should be validated in normal use of the space to ensure the Transmit Power is set appropriately for when the space is fully occupied.

LED States

State	Meaning
Solid Green	OK
Flashing between Green and Red	Firmware update in progress
Green, Blue, Red then Flashing Yellow	Boot sequence
Solid Yellow
Solid Red	System error – check status in Auri Manager, power cycle Transmitter or contact support
Flashing White	Identify
Red, Off, Green, Off, Blue, Off	Critical error, contact support

Restart/Factory Reset

Two recessed buttons are located between the USB-C socket and mic/line input 1.

Factory reset. The device can be reset through the Auri Manager software, however if it cannot be accessed through the software, for example due to incorrect network configuration or forgotten credentials then it can be reset by holding this button for 5 seconds or more. As soon as the status LED goes off the button can be released, the Transmitter will come back online with default settings restored.
The device can be restarted through the Auri Manager software, however if it cannot be accessed through the software then it can be reset with a momentary press of this button. Note that this will not change any settings, it is the equivalent of turning the Transmitter off and on again.

Technical Specifications

Inputs
Input selection	2x audio inputs individually selectable between mic, line or optional Dante modes
Mic/Line Inputs
Connection	2x 3-way 3.5mm pitch Euroblock
Input impedance	15kΩ
THD+N	0.03% at 0dBu (line mode) 0.02% at –25dBu (mic mode)
Common mode rejection	56dB
Microphone Mode
Max level before clipping	-25 dBu
Sensitivity	-65 dBu
Switchable phantom power	+24 V
Line Mode
Max level before clipping	+16 dBu
Sensitivity	-25 dBu
Dante (optional)
Connection	Dedicated RJ45 socket
Port speed	100 Mbit
Channels	2
Sample rate	48 kHz
Outputs
Line Output
Connection	1x 3-way 2.5mm pitch Euroblock
Nominal output level	+1 dBu
Output impedance	150 Ω
Radio
Bluetooth version	5.3
Operating Frequency	2400 to 2482 MHz
Operating mode	Auracast™ Compliant, Broadcast Only
Supported codec	LC3
Maximum output power	North America: +20 dBm Rest of World: +10 dBm
Output power control	Attenuation from regional max to -10 dBm
Encryption	AES128-CCM encryption, with 4-16 character password
Supported formats	Mono or Stereo
Network Audio
Input routing	Additional input source for each audio stream, must be selected from another TX2N on same network
Connection	Shared RJ45 with control and PoE
Channels	2x stereo inputs 2x stereo outputs
Format	Multicast RTP
Bit depth	16 bit
Sample rate	16 kHz, 24 kHz or 48 kHz, matched to broadcast
Bandwidth	0.5 Mbit/s (16 kHz) to 1.5M bit/s (48 kHz) per stereo stream
Latency	5 ms nominal
Audio Processing
Input routing	Disabled, Input 1 Only, Input 2 Only, Input 1 & 2 Stereo Pair, Input 1 & 2 Mono Sum
AGC	Switchable, 20 dB gain control range
Low cut	Switchable, 24 dB/oct, frequency based on sample rate 16 kHz sample rate: 75 Hz 24 kHz sample rate: 110 Hz 48 kHz sample rate: 220 Hz
Sample rates	16 kHz, 24 kHz (Auracast Standard – required) 48 kHz (Auracast High)
Frequency response +/- 3 dB (internal, line in to line out)	16 kHz sample rate: 50 Hz – 7.5 kHz 24 kHz sample rate: 50 Hz – 11.0 kHz 48 kHz sample rate: 50 Hz – 22.5 kHz
Latency (internal, line in to line out)	13ms
Latency (complete system, end to end)	Auri RX1 – 29 ms to 45 ms (dependant on sample rate and mono/stereo) Other receivers will vary
Network
Port speed	100 Mbit
IP address	DHCP, static or link-local
Protocols	mDNS, UDP (unicast), RTP (multicast), RTCP (multicast)
Security	UDP communication AES256-GCM

Controls and Indication
Buttons	Recessed restart and factory reset buttons
Setup/Programming	Via Auri Manager Software
Status LED	RGB multi-function LED, see handbook for states
Power
PoE	IEEE 802.3af
USB-C	5V PD Compliant
Power consumption (nominal)	USB-C: 5 V, 370 mA (1.85 W) PoE: 48 V, 53 mA (2.54 W)
Physical
Dimensions	183 x 173 x 48 mm (7.20 x 6.81 x 1.89 in.)
Weight	TX2N – 0.45 kg (0.99 lbs.) TX2N-D – 0.47 kg (1.04 lbs.)
Shipping Weight	TX2N – 0.89 kg (1.96 lbs.) TX2N-D – 0.91 kg (2.01 lbs.)
Enclosure Material	PC-ABS
Colour	White
Mounting	Removable wall/ceiling bracket Multiple holes to support mounting on standard UK, EU and US electrical back boxes and VESA 75
Environmental
Temperature – Storage	-40 °C (-40 °F) to 70 °C (+158 °F)
Temperature – Operation	-10 °C (14 °F) to 40 °C (+104 °F)
Relative Humidity	0 to 95% relative humidity, non-condensing
IP Rating	IP30 (with mounting bracket attached)
Compliance
Standards	FCC, ISED, CE, UKCA, RCM, MIC-R, RoHS, REACH, WEEE

	Specifications are subject to change without notice

Receivers (AURI-RX1)

Unpacking

Unpack all contents from the box:

1x AURI-RX1 Receiver

1x Quick Start Guide and Safety Data Sheet

First Use

Remove the protective screen cover. The Receiver will not activate until charged, connect a USB-C power supply or insert in a Docking Station and fully charge before use. The Receiver LED will flash white while charging and be solid white at full charge.

General Operation

Press and hold the Power button for 1 second to turn Receiver on. The Receiver will turn on automatically when removed from the Docking Station, or when USB power is unplugged.
The Receiver will scan for available Auri broadcasts and connect to the strongest available, if no broadcasts are found this will be indicated on screen.
Plug headphones, ear speaker, earbuds or compatible neck loop into the headphone and loop lanyard jacks.
Activate the display by a momentary press of the power or either front button.
Press the front right “scan / select” button to look for other broadcasts, these will be presented in a list which can be scrolled using the front left button or by the volume up and down buttons. Use the “scan / select” button again to connect to the highlighted broadcast.
Adjust volume by pressing volume up and down buttons.
To power down, press and hold the Power button for 3 seconds.

Display

The status screen shows a range of information about the Receiver and current connection.

	Indicates battery level and approximate remaining battery life in hours.
	Shows when connected to an encrypted broadcast.
	Indicates broadcast quality (sample rate). SQ is shown when connected to a Auracast compliant 16 kHz or 24 kHz broadcast, HQ is shown for high quality 48 kHz connections.
	Displays whether the Receiver is currently connected to headphones or to a neck loop lanyard.
	Indicates current signal strength, a flashing line through this icon represents no connection.
	The name of the currently connected broadcast. If there is no connection this will indicate the broadcast that the Receiver is trying to connect to.
	Scan icon, pressing the soft button below this will initiate a new scan.

When navigating a list or menu the icons above the soft buttons will change to represent the button function.

	Scroll down a list, used when selecting from available broadcasts.
	Select, press to choose the active list item.
	Back, steps one level back up the menu structure.
	The arrow indicates the currently selected option in the list, this is also represented by a larger font size.
	The tick mark indicates the currently active option.

Common Operations

Power / Status Button

A 1 second press of the Power button will turn on the Receiver.

Once the Receiver is on a short press of the Power button shows the status screen, this includes when any other screen such as volume, list or menu is showing in which case the Power button exits the current menu or screen.

When the status screen is active a short press of the Power button turns the screen off.

A 3 second press of the Power button turns the Receiver off, wait until the power icon is shown on screen then release the button.

Adjusting Volume

Pressing the volume controls from the status screen or with the screen off will adjust the volume in increments of 5%. Pressing and holding either volume button will continue to increase or decrease the volume in regular steps.

If no audio is currently available on the receiver a beep tone will be output with each volume change to give a representation of the new volume level.

Accessing the Menu

Press and hold Power and Volume Down for 2 seconds to access the menu.

Activating Channel Lock

Press and hold the Scan / Select button for 10 seconds, until the scan icon disappears to enable channel lock. Repeat the process until the scan icon is shown again to disable channel lock.

Battery Replacement

The Receiver battery must only be replaced with a genuine Auri LA-367 replacement battery. Loosen the screw in the rear of the Receiver, slide down and remove the battery door. Unplug the battery connector from the Receiver and dispose of the battery according to local regulations. Connect the new battery to the Receiver, refit the battery door and tighten the screw.

Options

The Receiver has a range of optional settings that affect how it operates and the preferred behaviour when scanning and selecting available broadcasts.

To configure these settings the Receiver must be in a compatible Auri D4 or D16 Docking Station and connected to the Auri Manager software.

Auri Only

Enabled (default) – will only show broadcasts from Auri Transmitters in the list, regardless of other settings.

Disabled – will show broadcasts from other 3^rd party Auracast Transmitters, so long as they match other criteria such as Library Lock or Channel Lock settings.

Library Lock

Enabled – the Receiver will only display and connect to broadcasts which have been pre-programmed into its library via the Docking Station.

Disabled (default) – the Receiver will list any broadcasts within range which match other criteria.

Channel Lock

Enabled – the scan button cannot be used and is hidden on the Receiver display. The Receiver will always look for the broadcast that was active when channel lock was turned on, if the broadcast is not found within the auto off timeout, then the Receiver will turn off.

Disabled (default) – the scan button can be used as normal to find and connect to alternative broadcasts. When turning on the Receiver will scan and connect to channels based on the state of the other connection options.

Auto Connect

Off – when the Receiver is turned on it will scan and present a list of available broadcasts for the user to select from.

Strongest Broadcast – when powering on, if Channel Lock is disabled, this will cause the Receiver to automatically connect to the strongest available broadcast.

Previous Broadcast – when powering on the Receiver will try to connect to the broadcast it was connected to prior to being turned off. If it cannot find that broadcast it will keep scanning for it until the Auto Off time expires or the user scans and selects an alternative broadcast.

Auto Power

Enabled (default) – the Receiver will automatically turn off and charge when power is applied via the Docking Station or USB-C and automatically turn on when power is removed.

Disabled – the Receiver must be turned on/off manually, this means it will stay connected and outputting audio when placed in the Docking Station or when USB-C is connected.

Auto Off

30 Minutes (default) – the Receiver will automatically turn off after 30 minutes unless connected to a broadcast.

20 Minutes or 10 Minutes – turns off after 20 or 10 minutes without a connection.

Off – disables the Auto Off feature.

Jack Sense

Enabled (default) – the Receiver will turn on when headphones or a neckloop are connected to either of the 3.5mm ports and turn off after 1 minute when both ports are disconnected.

Disabled – the Receiver must be turned on/off manually.

Display Brightness

Auto (default) – uses the light sensor above the Receiver display to automatically adjust display between bright and dim modes based on ambient light.

Bright – display is set to full brightness.

Dim – display is set to low brightness.

Off – display is set to low brightness and does not activate when adjusting volume.

Default Volume

Sets the volume level the Receiver will be set to when it is powered on. Default is 35%.

LED States

State	Meaning
Flashing White	Charging
Solid White	Fully charged
Flashing Red	Firmware update in progress
Fast Flashing Red	Low battery

Technical Specifications

Audio
Audio Output
Connection	2x 3.5 mm TRRS connections for wired headphones or inductive neck loops, supports TRS or TRRS headphones
Nominal Output Level	0 dBu, 16 mW maximum
Impedance	32 Ω
Audio Processing
Frequency Response +/- 3 dB (system)	16 kHz sample rate: 50 Hz – 7.5 kHz 24 kHz sample rate: 50 Hz – 11.0 kHz 48 kHz sample rate: 50 Hz – 19.5 kHz
THD+N (system)	< 0.5% Total Harmonic Distortion (at nominal level)
Signal to Noise Ratio (system)	> 60 dB (at nominal level)
Latency (system)	Auri RX1 – 29 ms to 45 ms (dependant on sample rate and mono/stereo) Other transmitters will vary
Radio
Bluetooth version	5.3
Operating Frequency	2400 to 2482 MHz
Operating Mode	Auracast™ Compliant, Broadcast Receive Only
Supported Codec	LC3
Encryption	AES128-CCM encryption, with 4-16 character password
Supported Formats	Mono or Stereo
Controls
Buttons	Power, Volume Up/Down, Two Front Multifunction Soft Buttons
User Control	Power on/off, display on/off, channel selection, volume up/down
Setup/Programming	Via Auri Manager Software/Docking Station
Indicators
Display	31 x 16 mm (1.22 x .63 in), 64 x 128 pixel OLED display
Display contents	Channel playing, available channels, battery level with time remaining, signal strength, volume status, charging status
Light Sensor	Visible light, automatically adjusts display brightness
Status LED	RGB multi-function LED, see handbook for states
Power and Charging
Power Supply	USB-C PD Compliant or Docking Station – 5 V, 500 mA
Dock Connection	4 contacts w/ magnetic latch for charging and programming via docking station
Battery Type	Lithium Polymer, rechargeable, field replaceable
Battery Size	3.7 Vdc, 730 mAh
Battery Life	> 20 hours
Battery Charge Time	Fully charged in < 4 hours (dead battery)
Power Save Modes	Auto Off – powers down on loss of audio (adjustable 0 – 30 minutes)
	Auto Power – powers down on charging and powers on when removed
	Jack Sense – powers down when jack is disconnected (1 min), powers on when jack inserted
Physical
Dimensions with Belt Clip	90 x 54 x 23 mm (3.54 x 2.13 x 0.91 in.)
Unit Dimensions	90 x 52 x 16 mm (3.54 x 2.05 x 0.63 in.)
Unit Weight	0.07 kg (0.15 lbs.)
Shipping Weight	0.09 kg (0.20 lbs.)
Enclosure material	PC plastic (IR transparent)
Colour	Black, Chrome Volume Buttons
Belt Clip	Removable
Battery Door	Removable for battery replacement
Environmental
Temperature – Storage	-40 °C (-40 °F) to 70 °C (+158 °F)
Temperature – Operation	-10 °C (14 °F) to 40 °C (+104 °F)
Relative Humidity	0 to 95% relative humidity, non-condensing
IP Rating	IP40
Compliance
Standards	CE, UKCA, RCM, REACH, WEEE

	Specifications subject to change without notice

Docking Stations (AURI-D4 / AURI-D16)

The Docking Stations allows for easy charging and management of Auri Receivers and are available in 4 or 16 unit options, with accessories such as the Docking Station case and intelligent cable management unit for the AURI-D16.

For a full description of features and configurations see the Auri Manager section of the handbook.

Unpacking

Unpack all contents from the box:

1x AURI-D4 or AURI-D16 Docking Station

1x LA-210 Power Supply

1x Quick Start Guide and Safety Data Sheet

Installation

Place the Docking Station on a flat surface or counter where Receivers are easily accessible.

Alternatively, the Docking Station can be mounted to a wall or other surface using the wall mounting slots (AURI-D4 and AURI-D16). Mount two screws with ¼” heads 6 inches (150 mm) apart on a wall. Align the centre of the wall mounting slots over the screws and slide the Docking Station down to secure in place.

Connect the Docking Station to a power outlet using the provided power supply.

Insert your Auri Receivers into the charging pockets of the Docking Station. The Receiver(s) top status LED will begin flashing white to indicate the battery is charging and turn solid when fully charged.

LA-382 Intelligent Cable Management Unit

A cable management unit is available for conveniently storing headphones, ear speakers, neck loops, and other accessories (available for AURI-D16 only).

General Operation

Status Button

Press the status button to illuminate the displays of all Receivers and show status information.

Copy Button

A momentary press (0 – 2 seconds) will copy the library of broadcast names and encryption keys from the Docking Station to all docked Receivers, the red LED flashes slowly during this process.

A long press (2 – 5 seconds) will copy the broadcast names, encryption keys and Receiver configuration settings from the Docking Station to all docked Receivers, the red LED flashes quickly during this process.

Holding the button for longer than 5 seconds cancels the operation, the red LED will go off to indicate no action will be taken.

A settings cog animation will show on Receiver screens whenever settings are being transferred from the Docking Station.

LED States

State	Meaning
Off	OK
Flashing Red and Amber then flash Amber	Boot sequence
Flashing between Amber and Red	Firmware update in progress
Slow Flash Amber (1s)	Identify
Medium Flash Amber (0.25 – 0.5s)	Updating
Fast Flash Amber (0.1s)	System warning – check status in Auri Manager and power cycle Docking Station
Solid Amber	System error – check status in Auri Manager, power cycle Docking Station or contact support
Slow Flash Red (while holding left button)	Ready to transfer broadcast library
Fast Flash Red (while holding left button)	Ready to transfer broadcast library and Receiver settings
Red, Off, Amber, Off	Critical error

Restart/Factory Reset

Two recessed buttons are located opposite the RJ45 socket.

Restart. The device can be restarted through the Auri Manager software, however if it cannot be accessed through the software then it can be reset with a momentary press of this button. Note that this will not change any settings, it is the equivalent of turning the Docking Station off and on again.
Factory reset. The device can be reset through the Auri Manager software, however if it cannot be accessed through the software, for example due to incorrect network configuration or forgotten credentials then it can be reset by holding this button for 5 seconds or more. As soon as the status LED goes off the button can be released, the Docking Station will come back online with default settings restored.

Technical Specifications

Network
Port speed	100 Mbit
IP address	DHCP, static or link-local
Protocols	mDNS, UDP (unicast)
Security	UDP communication AES256-GCM
Controls and Indication
Buttons	Copy and Status buttons Recessed restart and factory reset buttons
Setup/Programming	Via Auri Manager Software over network
LEDs	Copy LED (red) and Status LED (amber), see handbook for states
Power
Power Supply Input	100-240 VAC, 50-60 Hz
Power Supply Output	12 VDC, 4.0 A, 48 W
Power Supply Connector	5.5 mm (.22 in.) OD x 2.3 mm (.09 in.) ID, barrel type
Power Cable	1.8 m (72 in.) Input Power Cable, 1.1 m (43 in.) Output Cable
Physical
Dimensions	AURI-D4 – 50 x 192 x 150 mm (1.97 x 7.56 x 5.89 in.) AURI-D16 – 50 x 192 x 375 mm (1.97 x 7.56 x 14.77 in.)
Unit Capacity	4 or 16 Units
Weight	AURI-D4 – 0.65 kg (1.43 lbs.) AURI-D16 – 1.73 kg (3.81 lbs.)
Shipping Weight	AURI-D4 – 1.56 kg (3.44 lbs.) AURI-D16 – 2.79 kg (6.15 lbs.)
Colour	Black with chrome buttons
Mounting	Place on flat surface or use wall mounting slots
Environmental
Temperature – Storage	-40 °C (-40 °F) to 70 °C (+158 °F)
Temperature – Operation	-10 °C (14 °F) to 40 °C (+104 °F)
Relative Humidity	0 to 95% relative humidity, non-condensing
IP Rating	IP20
Compliance
Standards	CE, UKCA, RCM, REACH, WEEE

	Specifications are subject to change without notice

Auri Manager

The Auri Manager software allows discovery and configuration of all Auri Transmitters, docks and docked Receivers over the network.

It can be downloaded from the Microsoft store, search for “Auri Manager” or use this link https://www.microsoft.com/store/productId/9NRJLR0V9QXH

Installation Requirements

The software should be installed on a Windows 10 or 11 PC with at least 300MB free space.

The PC running the application must be connected to the same network as the devices to be controlled, and in the same subnet. A “link-local” setup is supported, where a single ethernet cable between the PC and the Transmitter or dock allows each device to automatically negotiate a compatible IP address with no wider network infrastructure or DHCP server needed.

Discovery uses mDNS and communication relies on UDP within the ephemeral port range, there must be no firewall settings in place that restrict this traffic.

Network Requirements

Usage	Type	Address	Port
Device discovery	mDNS (Multicast)	224.0.0.251	5353
Control	UDP (Unicast)	Device IP (DHCP, Static or Link Local)	55666, 56666
Firmware Update	TFTP	Device IP	69
Network Audio	RTP (Multicast)	239.255.0.0/16	5004, 5006, 5008, 5012
Network Audio	RTCP (Multicast)	239.255.0.0/16	5005

Quick Start – Minimum Transmitter Setup

Install the software.
Connect a network cable between the PC and the Transmitter.
Connect the intended audio inputs.

4. Power on the Transmitter (with PoE or USB-C).

5. Launch the software.

6. On the Devices page, identify the Transmitter you want to configure – this will be named “Auri-TX2N(-D)-SerialNumber”. If no Transmitter is shown, wait a short while, in a link-local configuration the Transmitter can take up to 2 minutes to obtain an IP address. New devices should be shown automatically, if not click the Refresh button to manually rescan. If the device still isn’t shown a firewall exception may be needed, see the Troubleshooting section for more information.

7. Click on the Transmitter name, in the dialog enter the username and password you would like to use to manage your devices, confirm the password and click Next.

8. In the next dialog enter the default username and password for your device, each device has a unique password, the defaults are printed on a label on the rear of the Transmitter.

9. On the Inputs page, select the right microphone or line mode for each input and enable phantom power if needed.

10. With audio signals playing or someone speaking into the microphone, set a suitable input gain, such that the stream meters read around -18 dBfs.

11. If using a microphone directly into the Transmitter, consider enabling the Low Cut filter on the relevant stream, and AGC where input levels may be variable.

12. Navigate to the Outputs page and set Broadcast Name to something which users will be able to relate to the coverage area, for example the room name. Change Stream Name (Program Info) if desired.

13. Adjust encryption and sample rate settings as required.

14. If the second stream is being used, turn on the toggle switch to enable the radio and adjust the settings.

15. The Transmitter should now be broadcasting audio, connect a Receiver to confirm.

16. Adjust Transmit Power to the lowest level that provides full coverage of the intended area when the space is fully occupied.

Initial Setup

When first opening the application it will present a Devices list screen, with Devices and Version tabs to the left. Once logged in an additional Account tab will be shown.

On the Devices page each online device name is a clickable link, when clicking a device link for the first time you will be presented with a login dialog. If the device has already been configured it will prompt for the existing admin credentials. If the device is in factory defaults you will first be asked to provide the username and password you would like to use to manage your devices, then the default credentials which are printed on a label on the rear of the device.

Once authenticated with the first device, the software will automatically login to any other devices on the network which share the same credentials.

Note that there is no way to recover credentials once setup, other than a Factory Reset of the device. Ensure credentials are recorded in a secure place such as a password manager.

Remember Me

When logging in a Remember Me checkbox is enabled by default. When ticked this securely stores the username and password used to authenticate with the devices. Next time the application is opened you will be immediately prompted for the password. Entering the correct password will allow the software to authenticate with all online devices.

Authenticate States

Application State	Device State	Auth Column	Device Link Action
Logged Out	Factory defaults	None	Prompts for new credentials to be used, then prompts for device default credentials, then loads device page
Logged Out	Existing admin account	None	Prompts for username and password, then loads device page
Logged In	Correct credentials	Admin	Loads device page
Logged In	Factory defaults	Default	Prompts for device default credentials, sets up new admin account with current application credentials, then loads device page
Logged In	Incorrect credentials or unresponsive device	Failed	Prompts for device credentials, option to either switch account or overwrite the existing account with current application credentials, then loads device page

Devices Page

The devices page provides a list of all Transmitters and Docking Stations which the software has been able to discover on the network. It also lists devices which have previously been discovered but are not currently online.

There is a toolbar along the top which supports some key device functions, the available buttons will depend on your authentication state and which devices are currently selected.

The devices page can be toggled between the default table or a tile-based view, using the buttons on the right of the toolbar.

Firmware

The selection below describes the controls, see Updating Firmware for more information on the firmware update process.

Firmware – the tab in the bottom right of the software window opens a panel showing the available firmware packages. If no firmware has been downloaded yet then this will be blank, use the Download or Browse FW buttons to find available updates. When there are firmware updates available in this panel, one can be selected in order to apply it to online devices. Whenever a firmware package is selected the Devices list will be filtered to only show devices compatible with the selected firmware file. Click the Firmware tab again to close the panel.
Download FW – automatically downloads available firmware packages from an online repository. The Firmware panel will be automatically opened at the start of this process, it may take a few seconds for firmware packages to start being added to the list.
Browse FW – allows opening of firmware packages which have already been downloaded to a local storage location. Primarily used when Auri Manager is being used on a PC with no internet access. Once a firmware package has been opened the Firmware panel will be automatically opened.
Update FW – once a firmware package has been selected, select a compatible device which is online and authenticated to enable this button. Click this will then transfer the firmware update package to the device and instigate the update. The update will take around 10-15 minutes in total. The device status will be updated to show progress and notifications will be provided at key points in the firmware update process.

Identify

Active only when one or more online and authenticated devices are selected. Identify flashes an LED on the selected devices for 60 seconds. This helps confirm the right physical device is being selected before any further configuration and proves that network communication is working as expected.

Remove

Active only when one or more offline devices are selected. Allows offline devices to be removed from the list if these are not likely to be connected again.

Set Location

Active only when one or more online and authenticated devices are selected. Up to 4 levels of location hierarchy can be set to group devices when large numbers are available on the same network. For instance, in a university this may be used to segment devices by campus, building, floor and room.

Each input field will show a dropdown of existing locations at that level, which will be filtered as you type. To create a new location, click on the “Create New: location” option, or press the enter key. Existing locations are represented in blue, new locations are shown in green. Once all desired location levels have been set, click the Assign button.

Locations are then represented by a folder tree in the left side of the device listing. Clicking on folders filters the list to only show devices grouped within that location and shows any further levels of location nested below.

To see all devices click on the “Root” folder at the top of the list.

Notifications

The management software supports notifications for certain events. Notifications can be accessed by clicking the icon in the top right corner, which is available from all pages within the application. The icon also shows the number of new, unread notifications.

New, unread notifications show the device name in bold to distinguish them from previously seen notifications.

Some notifications in the panel can be clicked to see more detail in a dialog window.

Each notification can be individually dismissed by clicking the X on the right of the notification.

All current notifications can be dismissed using the “CLEAR” button at the bottom of the panel.

Click the icon again or anywhere in the main window to dismiss the notification panel.

Transmitter Configuration

When accessing a Transmitter, you will initially be presented with an Input screen. There are two other pages for Output and Settings configuration.

Input

This page allows configuration of the physical mic/line or Dante inputs to the device, as well as choosing how these are routed to each of the two streams that the Transmitter supports.

Input Controls

Input 1/2 Mode – this allows selection of microphone or line level input to set the right signal level. For Dante enabled devices a Dante option will also be available in this dropdown.
Input 1/2 Phantom Power – enables +24V phantom power for the given input to support condenser microphones. This is only shown when the input is in microphone mode.
Input 1/2 Gain – the sliders can be used to set the gain for each input, this is shown as a level relative to maximum gain (0dB) and provides an adjustment range of 40dB at 1dB intervals.
- When AGC is enabled the input gain control will only have an impact at -30 and -20dB thresholds, as the AGC will take control of the fine gain.

Stream Controls

The streams are the audio channels which are managed by the transmitter, these streams can be broadcast over Auracast, sent to the analogue line out or sent over network audio to other Transmitters. Each stream runs in stereo within the Transmitter.

Source 1 – for each of the two streams this allows selection of whether the audio source will be taken from Input 1 Only, Input 2 Only, both inputs as a Mono Sum, both inputs treated as a Stereo Pair or the input Disabled.
- Setting a stream input to Stereo Pair will automatically set the Radio Output to Stereo.
- If either stream source is set as a stereo pair, the input modes, phantom power and input gain settings will be mirrored automatically between the two inputs and only a single set of input controls is shown.
- You cannot route Input 1 Only to Stream 2, or vice versa.
AGC – allows a level of automatic gain control for the stream input. With this enabled the Transmitter will automatically adjust the input gains within a 20dB range to try and optimise the signal level. This is recommended when microphones are in use without any external dynamic control, as it helps avoid differences in volume between different talkers. When enabled an additional meter is shown to display the amount the AGC is reducing from full gain.
- When AGC is enabled the input gain control will only have an impact at -30 and -20dB thresholds, as the AGC will take control of the fine gain.
Low Cut – enables a low cut filter on the given stream input, to help with intelligibility when microphones are directly connected to the Transmitter inputs. Note that the low cut filter knee frequency varies depending on the sample rate of the stream, see the Transmitter Technical Specifications for more information.
Mute – mutes the audio input to the stream.
Source 2 (Network Audio) – allows another Transmitter to be chosen as an input. The dropdown shows a list of all online Transmitters. Choosing a Transmitter from the list will configure it as an audio source, sending its stream over the network and setting the current Transmitter to receive that audio stream. This is primarily used when setting multiple Transmitters as repeaters in larger installations.
Mute – mutes the network audio input, if active.
Test Tone – temporarily disables the audio inputs to the stream and plays a sinewave tone for verification of the system.
Stream Meters – shows a live stereo signal level for the output of the given stream. The input gains or source audio levels should be adjusted to target the meters reading around the -18 dBfs level.

Output

The outputs page is primarily for adjusting Auracast related settings, but also allows control of functions such as an analogue line output.

Radio 1/2 – enables or disables the radio for each stream. If only one stream is in use, ensure the radio is disabled for the unused stream.
Broadcast Name* – sets the name that users will see when scanning for an Auracast broadcast. A unique Broadcast Name should be provided for each output of each Transmitter. This would commonly be set to represent the room name for example. Supports 4-14 extended ASCII characters.
Stream Name – sets the “Program Info” field, which some broadcast assistants may show a user when selecting an Auracast broadcast or for more contextual information while listening. Auri Receivers do not display this field.
Radio 1/2 Mode* – allows choice of whether the radio is broadcasting in mono or stereo. This is independent of the stream source, for instance it is possible to have mono source content and still have the radio set to broadcast stereo. Stereo radio mode will mean that two separate streams are broadcast, for left and right.
Encryption* – selects between an open broadcast or a secure encrypted broadcast. When enabled a separate Privacy Code field is shown.
Privacy Code* – sets the password (“Broadcast Code”) needed for users to connect to an encrypted broadcast. Should be 4-16 extended ASCII characters. Note that if encryption is enabled but no privacy code is set, the broadcast will be openly available.
Sample Rate* – selects from 16 kHz, 24 kHz or 48 kHz sample rate, which affects the frequency range of the broadcast. To be Auracast compliant as a venue, at least one radio must be broadcasting at 16 kHz or 24 kHz. Devices such as hearing aids are unlikely to support 48 kHz.
Transmit Power* – allows adjustment of the radio output power to reduce range when covering smaller areas. Expressed as a dBfs level relative to maximum output power.
Network Audio – enables or disables output of the stream to the network, used to send audio to repeaters. This will automatically be enabled if the Transmitter is selected as an audio input source for another Transmitter.
Line Out – enables or disables a balanced analogue line output which is available only on stream 1. This will be a mono sum of the stream 1 content.

* Changes to these settings will cause the radios to restart, this will lead to a short loss of audio. Auri Receivers will automatically reconnect when the broadcast becomes available again, however 3^rd party receivers may need to be manually reconnected.

Settings

This page provides visibility and configuration of parameters relating to the Transmitter itself.

Device Name – set the name the Transmitter will be known by in the device listing, notifications panel and other areas of the management software.
Device Status – will report any errors or warnings related to the Transmitter.
Device Firmware – reports the currently installed firmware version.
Device Serial – the serial number of the Transmitter.
Region Code – designates the radio region of the device.
Device Uptime – the time that has passed since the Transmitter was last powered on or reset.
Administrator – reads back to username of the currently authenticated user.
Status LED – enables or disables the LED on the Transmitter so this can be turned off for installation in dark environments.
MAC Address – reports the MAC address of the Transmitter.
IP Address – the current IP address and whether this was obtained from DHCP, Auto (link local) or static configuration.
DHCP – enables or disables the DHCP Client on the Transmitter. When DHCP is enabled the Transmitter will wait 2 minutes for an address to be assigned by a DHCP server, after this the Transmitter will revert to an address in the link-local range (169.254.0.0/16)
The following fields are only active when DHCP is disabled and are used to set static network configuration. Note: any changes to network settings are only applied when the device is next restarted. Take care when assigning static IP addresses, misconfiguration may make the device uncommunicable.
- Static IP Address
- Subnet Mask
- Gateway
- Primary DNS
- Secondary DNS
Network Audio Multicast IP – sets the IP address used for network audio streams between Transmitters. When setting up network audio streams the software will manage multicast addresses to ensure unique addresses are used for each group of transmitters, so this setting should not need to be adjusted. If there is a reason to adjust this due to a network conflict, it must be updated to the same IP on all Transmitters that are part of a network audio group.
Import / Export Settings – allows you to import or export a configuration file for a device. See below for more details.
Restart – restarts the Transmitter. This will not change any settings but will allow changes to network parameters to be applied.
Factory Reset – this will restart the device with ALL settings reset to the default factory configuration, including username and password.

Import or Export Device Settings

Tick boxes allow selection of which parameters to be saved based on the software settings pages, the system tick box includes device location. Select all for a complete device backup.

Usernames and passwords are never stored in a configuration file.

On Export the settings will be stored in an encrypted .auri file, named after the device name, date and time of export and saved locally in My Documents\Auri.

To import an existing settings file to a device you must first be authenticated with the same username as the device the file was exported from, then click Import and select the file. All settings stored in the file will be copied to the device regardless of which tick boxes are selected.

Dock Configuration

When accessing a dock, you will initially be presented with a Portables page. Library and Settings pages are also available.

Portables

This page is primarily to view and configure Receivers currently within the dock.

Receiver Settings

Docking stations are able to store a full Receiver configuration, the current configuration stored on the dock is read back to the controls at the top of this page and can be adjusted as required. Any settings changes will be immediately applied to all currently docked Receivers.

For an overview of the Receiver settings, see the Receiver section of the handbook.

Update Settings

Manual – Stored settings on the Docking Station will not be sent to newly docked Receivers automatically. Settings can be copied to all docked Receivers at any point by clicking the Apply Settings button. Library and settings can be copied using the left button of the Docking Station.
Auto Update Library – The library of 32 broadcasts will be automatically sent to Receivers as soon as they are placed in the dock. This will overwrite existing Receiver libraries, and if the dock library is empty the Receiver library will be wiped when docked.
Auto Update Settings – The Receiver settings stored on the dock will be automatically sent to Receivers as soon as they are placed in the dock, this will overwrite existing Receiver settings.
Auto Update Library and Settings – Both the library and Receiver settings stored on the dock are automatically sent to Receivers.

A table is shown representing the number of slots in the Docking Station, when a Receiver is in any of the slots it will show in the corresponding table row, with the battery level, status, firmware version and serial number. There are also two buttons in each table row –

Identify – turns on the screen of the Receiver to confirm the right physical device is being selected before any further configuration and proves that communication is working as expected.
Factory Reset – resets the Receiver to factory default settings.

A single toolbar button is available –

Update All FW – sends the firmware package stored on the Docking Station to all currently docked Receivers. See Updating Firmware for more information.

Library

The docks can store a library of up to 32 broadcast names and privacy keys if needed. This library can be set to either automatically update any Receivers as soon as they are inserted into the dock, or so that a button press is needed on the dock for a transfer to happen.

The library is provided so that Receivers can connect to encrypted streams without having to manually enter a password, but also allows the Receiver to be locked down so that it will only connect to one or more pre-configured broadcasts.

This page allows each of the 32 library entries to be manually entered, or alternatively you can search and select from streams available from any Transmitters currently on the network, to copy the broadcast name and privacy keys automatically into the dock library.

The right panel will load the current broadcast library from the active dock. Each of these rows can be manually edited or can be removed by clicking the bin icon on the right.

A new blank row will automatically be added as needed, until all 32 rows are used.

The left panel lists the broadcast names for all online and authenticated Transmitters, so these can be selected to add into the dock library. Click anywhere on a row to add it into the dock library, the row will then be shown in a darker grey to indicate it is already present in the library.

In larger systems the search bar can be used to help find the required Transmitters and broadcasts.

Settings

Matches the options available on the Transmitter Settings page, with the exception of controls mentioned below.

Auto Update Portables – when enabled the Docking Station will automatically update the firmware of any Receivers that are docked with an older firmware version current installed. When disabled the Update FW button from the Portables page must be used to manually start an update for all docked Receivers.
Region Code, Status LED and Network Audio Multicast IP are not applicable to the Docking Station.

Account

The account page can be used to update the username and password used to authenticate with devices or delete the account entirely.

If the account is deleted, the factory default username and password will be reactivated.

Note that changes on this page can only be applied to devices which are currently online and authenticated. It is recommended to ensure all devices are connected when a change is made to avoid some devices being left on old credentials.

Changes to the account details will apply to ALL online authenticated devices.

The current username will be pre-filled.

Change Password – enter your current password and the new password, confirm the new password then click Submit.
Change Username – enter your current password and the new username, then click Submit.
Change Username and Password –enter your current password, the new username and the new password, confirm the new password then click Submit.
Delete Account – enter your current password and click Delete Account.

About

Displays contact information and the currently installed software version number.

Updating Firmware

Transmitters and Docking Stations

Make sure the firmware package has been added to the application, using either the Download FW or Browse FW options.
Open the Firmware panel and select the firmware package to be installed. Selecting a firmware package will filter the current device list to show only compatible devices.

3. Select one or more devices to be updated, then click Update FW to start the update.

4. The device states will show “Transferring” with a percentage to indicate progress while the file is sent to the devices, and a notification will be added.

5. Once Transferring completes the state will change to “Extracting” with a percentage to indicate progress while the devices are unpacking and checking the file is valid, and a notification will be added. This will take approximately 5 minutes.

6. Once the file is ready to be installed, the device will restart, state will show “Updating” with a percentage to indicate progress, and a notification will be added, this will take approximately 1 minute on a Docking Station and 5 minutes on a Transmitter.

7. At the end of installation the device will restart again and be rediscovered by the application. Confirm the firmware version has been updated as expected.

8. If the update fails for any reason, restart the device and try again. If it fails repeatedly contact support.

9. Note that the software must remain open and connected to the device until at least the “Updating” stage has started, if it is disconnected at any point before this the update will fail. The devices must stay powered on until the entire update has completed.

Receivers

Receiver firmware is included within the Docking Station firmware package.

Ensure the Docking Station has been updated with the version to be installed on the Receivers.
By default Docking Stations will be set to automatically update any Receivers that are docked running an older version. In this mode just dock the Receiver and the update will start.
To disable the automatic update function, go to the Docking Station Device page and turn off the “Auto Update Portables” toggle.
To manually start a Receiver firmware update, go to the Docking Station Portables page and click Update All FW. This will update all docked Receivers.
The Receivers will show “Updating” in the Status column with a percentage to indicate progress. The software can be closed while this is in progress.
While a Receiver is updating the top LED will flash red. It should not be removed from the dock while this is happening. When the LED goes white again the update is complete, and the Receiver can be removed.
Receivers are updated in parallel, this means the update will take longer to complete if more Receivers are docked when the update is started.

Setting Encrypted Channels

By default the Transmitter broadcasts open, unencrypted streams. This is the recommended approach in public areas where ease of access for people using personal devices is most important. For more secure environments encryption can be enabled to limit who can connect to the broadcast.

Navigate to the Transmitter in Auri Manager and click through to the Output page.
For the broadcast to be encrypted, turn on the Encryption toggle and enter a password between 4 to 16 characters.
Make a note of the password, this will need to be made available to any users who will connect with their own devices, for example it may need showing on signage within the coverage area.
Navigate to the Docking Station which is serving the area to be covered by the encrypted broadcast and click through to the Library page.
In the left panel locate the broadcast that was configured in step 2, this will be referenced as “TransmitterName – BroadcastName” in the list.
Click on the broadcast and confirm that it has been added to a spare row in the Dock Library within the right panel. This will store the password in the dock and all currently docked Receivers.
Remove a Receiver from the dock and confirm that it is able to list and connect to the broadcast.
To ensure any Receivers docked in the future can access the broadcast, on the Portables page for the Docking Station set the Update Settings option to Auto Update Library. Alternatively the left button on the Docking Station can be pressed to transfer the library to docked Receivers at any time.

Connecting Repeaters

In scenarios where a single Transmitter is not able to cover the required area, multiple Transmitters can be linked together, enabling broadcast of the same audio content.

Auri Receivers are able to automatically connect to alternative Transmitters using the same broadcast settings. This means that if a user moves out of range from a Transmitter, once the signal has disconnected the Receiver will automatically scan and if an alternative Transmitter is available it will reconnect. It also means that when turning on a Receiver, if settings such as connection lock, library lock, or auto connect to previous are enabled, the Receiver will be able to connect to any Transmitter that matches the broadcast settings.

When performing a manual scan within range of multiple Transmitters using the same broadcast name, the Receiver will only show one of them in the list, and connect to the one with the strongest signal.

Note that other third party Auracast receivers may not support automatic reconnection or roaming between Transmitters.

There are two parts needed for a repeater configuration.

Audio Connections

Repeaters will generally need the same audio content to be connected to all Transmitters, this can be done by splitting the input audio signal, patching the same Dante output to all Transmitters, or by using the Auri network audio support.

To use network audio all Transmitters must be on the same network subnet. Network audio is sent as muticast RTP traffic, and it is strongly recommended to have IGMP configured properly if connecting to a wider network as without this multicast traffic will be treated as broadcast to all network hosts. This is not necessary if using Auri on a standalone, isolated network in which case a simple unmanaged switch can be used.

Start by making sure that a suitable audio source is connected to the primary Transmitter and that the input and stream settings are adjusted to give a suitable signal level. Connect to the broadcast and confirm everything works as expected with a single Transmitter.

In Auri Manager, go to the Inputs page of the repeater, click the “Source 2 (Network Audio)” dropdown and select the primary Transmitter from the list.

Both Transmitters will be configured automatically for network audio, confirm that the meters on the repeater are showing similar signal levels to the primary Transmitter.

Broadcast Configuration

Certain Output settings should be matched on the repeater to ensure that they work effectively together.

As a minimum, sample rate must be set to the same value, this will be automatically configured when setting network audio sources, but if changing sample rate later then all Transmitters within the network audio group must be updated to the same sample rate.

In most cases the broadcast name, encryption settings and stream name should be set the same as well, this will allow Auri Receivers to automatically connect to repeaters if they drop out of range from the primary Transmitter.

Once one repeater is configured, output settings can be quickly copied to other repeaters by using the Import/Export Settings option and selecting just the Output tick box when exporting a file from the first repeater. This same file can then be imported into any number of repeaters to configure their outputs.

There may be cases where it is preferable to name the broadcasts differently, for instance where Transmitters are allocated to different sections of a theatre naming the broadcasts as “Stalls” and “Circle” could help users connect to the most appropriate Transmitter. Note that in this configuration the Auri Receiver will not be able to automatically connect to repeaters. If a user moved out of range and the repeater is named differently, the user would have to rescan and connect to the alternative Transmitter.

Troubleshooting

No devices discovered in Auri Manager

Ensure devices have a network connection, are powered on and are on the same network subnet as the PC running Auri Manager.

If using link-local the devices will take around 2 minutes to obtain an IP address and be discovered.

Click the “Refresh” button

In most cases Auri Manager will request access to the network when first opened and permission should be granted, if no devices are being discovered then check the firewall settings; this is most commonly needed in link-local configurations.

In the Windows Start Menu search for “Allow an app through Windows Firewall”.

Click “Change settings” then scroll down the list to find “Auri Manager” and enable the checkboxes in all available columns.

RX1 Receiver will not power on

Make sure the Auri RX1 Receiver has a fully charged battery or is connected to a standard USB charger. Make sure the power button on the right side of the unit has been pressed for 1 second to turn the unit on. If this does not work, make sure the battery is installed properly or install a replacement battery. If using the Receiver for the first time, fully charge it using a USB charger or Auri Docking Station before use.

Receiver cannot connect to broadcast

Make sure the Receiver is within range of the Transmitter. If the broadcast is encrypted, ensure the details have been stored in the Receiver library through Auri Manager and a network connected Docking Station. Ensure the Receiver does not have “Library Lock” enabled, if so make sure the broadcast is added to the Receiver library.

There is no audio

Make sure the Auri RX1 Receiver is connected to the correct broadcast. Make sure the Auri TX2N Transmitter is powered on and has an audio source connected. Review the Transmitter Input settings in the Auri Manager application, make sure the correct input mode is selected, the stream sources are configured correctly and adjust the input gain such that the stream meters read approximately -18 dBfs. Make sure there is a suitable headphone or neck loop connected to the Auri RX1 and that the volume is set to a suitable level.

Audio is distorted

Review input mode and input gain on the Transmitter in the Auri Manager application. Adjust settings such that the stream meters read approximately -18 dBfs. Verify that the source audio being sent to the Transmitter is clean and undistorted.

Device state shows Firmware Error in Auri Manager

A firmware error can be shown due to a failed update or a corrupted image on the device. In some cases this may mean the device is running a recovery image with limited functionality. First try restarting the device and see if the state recovers to Online when rediscovered by Auri Manager. If the device still shows a Firmware Error after restarting, try installing the latest available firmware package for that device. If the error persists or the firmware update fails contact support.

Device does not boot or continuously restarts

The Transmitters and Docking Stations can be restarted into a recovery image by holding down the factory reset button while power cycling the device. After this has been done the device will be on the original firmware release with all settings erased. Update the firmware to the most recent version and reapply settings as needed.

Accessories

A complete range of accessories is available to complement your Auri system.

Neck loops allow Receiver compatibility for users with telecoil equipped hearing aids and cochlear implants.

The Auri RX1 is compatible with standard 3.5mm headphones or earbuds, a range of options are available from your Auri dealer.

Other accessories include spare battery packs, one-port USB chargers, cases and signage.

For a full list of Auri accessories visit www.auriaudio.com

Compliance

FCC Regulation Statements:

FCC part 15 subpart C (FCC ID: 2BHN3TX2N)

FCC part 15 subpart B

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been 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 instructions, 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 harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

—Reorient or relocate the receiving antenna.

—Increase the separation between the equipment and Receiver.

—Connect the equipment into an outlet on a circuit different from that to which the Receiver is connected.

—Consult the dealer or an experienced radio/TV technician for help.

Any changes or modifications made to this device that are not expressly approved by Listen Technologies may void the user’s authority to operate the equipment.

The information in this guide may change without notice. The manufacturer assumes no responsibility for any errors that may appear in this guide.

ISED Regulation Statement:

ISED RSS-247 issue 3 (IC ID: 32898-TX2N)

CAN ICES-3 (B)/NMB-3 (B)

This device complies with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

This device may not cause interference.
This device must accept any interference, including interference that may cause undesired operation of the device.

Cet appareil contient des émetteurs/récepteurs exempts de licence qui sont conformes aux RSS exemptés de licence d’Innovation, Sciences et Développement économique Canada. L’exploitation est soumise aux deux conditions suivantes:

Cet appareil ne doit pas provoquer d’interférences.
Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l’appareil.

For Users in the European Union

This device is a Bluetooth Low Energy system operating in the 2.4 GHz frequency band from 2.400 GHz to 2.482 GHz. The usage of this device is generally allowed in all EU countries, Australia, New Zealand, Singapore, and Hong Kong. Product labelling information such as serial number, manufacturer, and additional regulatory information is found on the product label on the device.

EU Declaration of Conformity

Hereby, Ampetronic and Listen Technologies declares that the radio equipment type AURI-TX2N, AURI-TX2N-D, AURI-D4, AURI-D16 and AURI-RX1 is in compliance with:

Radio Equipment Directive 2014/53/EU

ETSI EN 300328 V2.2.2

Electromagnetic Compatibility Directive 2014/30/EU

ETSI EN 301489-17 V3.2.4

EN 55032:2015+A1:2020

EN 55035:2017+A11:2020

EN 61000-3-2:2019+A1:2021

EN 61000-3-3:2013+A2:2021

Low Voltage Directive 2014/35/EU

EN62368-1:2020+A11:2020

RoHS 3 Directive EU 2015/863

REACH EC 1907/2006

WEEE Directive (2012/19/EU)

Battery Directive (2006/66/EC & 2013/56/EU)

If you wish to discard electrical and electronic equipment (EEE), please contact your dealer or supplier for further information.

The full text of the EU declaration of conformity is available at the following internet address: www.auriaudio.com

Japan

Radio Ordinance Article 2, paragraph 1, item 19 (MIC ID 205-240087)

Warranty

Ampetronic and Listen Technologies warrants the AURI-TX2N, AURI-TX2N-D, AURI-D4, AURI-D16 and AURI-RX1 to be free from defects in materials and workmanship under normal use and conditions for 5 Years from the original date of purchase.

Lithium polymer batteries supplied with receivers carry a one year limited warranty from date of purchase.

Related accessories such as headphones and neck loops carry a one year limited warranty from date of purchase.

For the current warranty conditions, please visit our website at www.auriaudio.com or contact your local dealer.

Contact Information

LISTEN TECHNOLOGIES 14912 Heritage Crest Way, Bluffdale, Utah 84065-4818 USA

Phone: +1.801.233.8992 Toll-Free: 1.800.330.0891 www.listentech.com

AMPETRONIC Unit 2, Trentside Business Village, Farndon Road, Newark, NG24 4XB, United Kingdom

Phone: +44 1636 610062 www.ampetronic.com