Atlona Technologies AT-GAIN-120 Datasheet

Stereo / Mono
Audio Power Amplier
120 Watts
AT-GAIN-120
Atlona Manuals
Audio
Version Information
1 4/18 Initial release
AT-GAIN-120
2
Welcome to Atlona!
Thank you for purchasing this Atlona product. We hope you enjoy it and will take an extra few moments to register your new purchase.
Registration only takes a few minutes and protects this product against theft or loss. In addition, you will receive
notications of product updates and rmware. Atlona product registration is voluntary and failure to register will not aect the product warranty.
To register your product, go to http://www.atlona.com/registration
Sales, Marketing, and Customer Support
Main Oce
Atlona Incorporated 70 Daggett Drive San Jose, CA 95134 United States
Oce: +1.877.536.3976 (US Toll-free) Oce: +1.408.962.0515 (US/International)
Sales and Customer Service Hours
Monday - Friday: 6:00 a.m. - 4:30 p.m. (PST)
http://www.atlona.com/
Operating Notes
IMPORTANT: Visit http://www.atlona.com/product/AT-GAIN-120 for the latest rmware updates and
User Manual.
International Headquarters
Atlona International AG Ringstrasse 15a
8600 Dübendorf
Switzerland
Oce: +41 43 508 4321
Sales and Customer Service Hours
Monday - Friday: 09:00 - 17:00 (UTC +1)
©2018 Atlona, Inc. All Rights Reserved. All trademarks are the property of their respective owners.
Atlona reserves the right to make changes to the hardware, packaging, and documentation without notice.
AT-GAIN-120
3
Atlona, Inc. (“Atlona”) Limited Product Warranty
Coverage
Atlona warrants its products will substantially perform to their published specications and will be free from defects
in materials and workmanship under normal use, conditions and service.
Under its Limited Product Warranty, Atlona, at its sole discretion, will either:
repair or facilitate the repair of defective products within a reasonable period of time, restore products to their proper operating condition and return defective products free of any charge for necessary parts, labor and
shipping.
OR
replace and return, free of charge, any defective products with direct replacement or with similar products
deemed by Atlona to perform substantially the same function as the original products.
OR
refund the pro-rated value based on the remaining term of the warranty period, not to exceed MSRP, in cases
where products are beyond repair and/or no direct or substantially similar replacement products exist.
Repair, replacement or refund of Atlona products is the purchaser’s exclusive remedy and Atlona liability does not
extend to any other damages, incidental, consequential or otherwise.
This Limited Product Warranty extends to the original end-user purchaser of Atlona products and is non-transferrable to any subsequent purchaser(s) or owner(s) of these products.
Coverage Periods
Atlona Limited Product Warranty Period begins on the date of purchase by the end-purchaser. The date contained on
the end-purchaser ‘s sales or delivery receipt is the proof purchase date.
Limited Product Warranty Terms – New Products
10 years from proof of purchase date for hardware/electronics products purchased on or after June 1, 2013.
3 years from proof of purchase date for hardware/electronics products purchased before June 1, 2013.
Lifetime Limited Product Warranty for all cable products.
Limited Product Warranty Terms – Refurbished (B-Stock) Products
3 years from proof of purchase date for all Refurbished (B-Stock) hardware and electronic products purchased on or after June 1, 2013.
Remedy
Atlona recommends that end-purchasers contact their authorized Atlona dealer or reseller from whom they
purchased their products. Atlona can also be contacted directly. Visit www.atlona.com for Atlona’s contact
information and hours of operation. Atlona requires that a dated sales or delivery receipt from an authorized dealer,
reseller or end-purchaser is provided before Atlona extends its warranty services. Additionally, a return merchandise authorization (RMA) and/or case number, is required to be obtained from Atlona in advance of returns.
Atlona requires that products returned are properly packed, preferably in the original carton, for shipping. Cartons not bearing a return authorization or case number will be refused. Atlona, at its sole discretion, reserves the right to reject any products received without advanced authorization. Authorizations can be requested by calling 1-877-536-3976 (US toll free) or 1-408- 962-0515 (US/international) or via Atlona’s website at www.atlona.com.
Exclusions
This Limited Product Warranty excludes:
Damage, deterioration or malfunction caused by any alteration, modication, improper use, neglect, improper packaging or shipping (such claims must be presented to the carrier), lightning, power surges, or other acts of
nature.
AT-GAIN-120
4
Atlona, Inc. (“Atlona”) Limited Product Warranty
Damage, deterioration or malfunction resulting from the installation or removal of this product from any
installation, any unauthorized tampering with this product, any repairs attempted by anyone unauthorized by
Atlona to make such repairs, or any other cause which does not relate directly to a defect in materials and/or workmanship of this product.
Equipment enclosures, cables, power supplies, batteries, LCD displays, and any accessories used in conjunction
with the product(s).
Products purchased from unauthorized distributors, dealers, resellers, auction websites and similar unauthorized channels of distribution.
Disclaimers
This Limited Product Warranty does not imply that the electronic components contained within Atlona’s products will not become obsolete nor does it imply Atlona products or their electronic components will remain compatible
with any other current product, technology or any future products or technologies in which Atlona’s products may
be used in conjunction with. Atlona, at its sole discretion, reserves the right not to extend its warranty oering in instances arising outside its normal course of business including, but not limited to, damage inicted to its products
from acts of god.
Limitation on Liability
The maximum liability of Atlona under this limited product warranty shall not exceed the original Atlona MSRP for its products. To the maximum extent permitted by law, Atlona is not responsible for the direct, special, incidental or consequential damages resulting from any breach of warranty or condition, or under any other legal theory. Some
countries, districts or states do not allow the exclusion or limitation of relief, special, incidental, consequential or
indirect damages, or the limitation of liability to specied amounts, so the above limitations or exclusions may not
apply to you.
Exclusive Remedy
To the maximum extent permitted by law, this limited product warranty and the remedies set forth above are
exclusive and in lieu of all other warranties, remedies and conditions, whether oral or written, express or implied.
To the maximum extent permitted by law, Atlona specically disclaims all implied warranties, including, without limitation, warranties of merchantability and tness for a particular purpose. If Atlona cannot lawfully disclaim or exclude implied warranties under applicable law, then all implied warranties covering its products including warranties of merchantability and tness for a particular purpose, shall provide to its products under applicable law. If any product to which this limited warranty applies is a “Consumer Product” under the Magnuson-Moss Warranty Act (15 U.S.C.A. §2301, ET SEQ.) or other applicable law, the foregoing disclaimer of implied warranties shall not apply, and all implied warranties on its products, including warranties of merchantability and tness for the particular purpose, shall apply as provided under applicable law.
Other Conditions
Atlona’s Limited Product Warranty oering gives legal rights, and other rights may apply and vary from country to country or state to state. This limited warranty is void if (i) the label bearing the serial number of products have been removed or defaced, (ii) products are not purchased from an authorized Atlona dealer or reseller. A comprehensive list of Atlona’s authorized distributors, dealers and resellers can be found at www.atlona.com.
AT-GAIN-120
5
Important Safety Information
The lightning ash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sucient magnitude to constitute a
risk of electric shock to persons.
Das Symbol des Blitzzeichens innerhalb eines gleichseitigen Dreiecks soll den Benutzer davor warnen, dass innerhalb des Gehäuses gefährlich hohe Spannung an berührbaren Teilen anliegt. Die Spannung ist hoch genug um bei Berührung zu einem gefährlichen elektrischen Schlag zu führen!
三角形內帶有箭頭符號的閃電,旨意在提醒用戶產品外殼內存在未絕緣的“危險電壓”可能會造成人體觸電危險
Вспышка молнии с символом стрелки в треугольнике предназначена для предупреждения пользователя о наличии неизолированного «опасного напряжения» в корпусе продукта, которое может иметь достаточную величину, чтобы представлять опасность поражения электрическим током для людей
Le ash lumineux dans le symbole de la èche du triangle équilatéral est destiné à alerter l’utilisateur de la présence d’une «tension dangereuse» non isolée dans l’enceinte du produit qui peut être susamment importante pour constituer un risque d’électrocution pour les personnes
Il simbolo del lampo con la punta di una freccia, all’interno di un triangolo equilatero, avvisa l’utente della presenza di “tensioni pericolose” non isolate all’interno del contenitore del prodotto che possono essere sucientemente elevate
da costituire un rischio di folgorazione per le persone.
El símbolo del rayo con punta de echa dentro de un triángulo equilátero alerta al usuario de la presencia de “voltaje peligroso” no aislado en el interior del producto que puede ser de una magnitud suciente como para constituir un riesgo de descarga eléctrica para las personas.
AT-GAIN-120
6
Important Safety Information
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCT THE RISK OF
DO NOT OPEN ENCLOSURE OR EXPOSE
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the product.
The information bubble is intended to alert the user to helpful or optional opera­tional instructions in the literature accompanying the product.
ELECTRIC SHOCK
TO RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS
INSIDE REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this product near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install or place this product near any heat sources such as radiators, heat registers, stoves, or
other apparatus (including ampliers) that produce
heat.
9. Do not defeat the safety purpose of a polarized or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are
provided for your safety. If the provided plug does
not t into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the product.
11. Only use attachments/accessories specied by Atlona.
12. To reduce the risk of electric shock and/or damage to this product, never handle or touch this unit or power cord if your hands are wet or damp. Do not expose this product to rain or moisture.
13. Unplug this product during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel.
Servicing is required when the product has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the product, the product has been
exposed to rain or moisture, does not operate
normally, or has been dropped.
FCC Statement
FCC Compliance and Advisory Statement: This hardware 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. This
equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed or 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 o and on, the user is encouraged to try to correct the interference by one or more of the following measures: 1) reorient or relocate the receiving antenna; 2) increase the separation between the equipment and the receiver; 3) connect the equipment to an outlet on a circuit dierent from that to which the receiver is connected;
4) consult the dealer or an experienced radio/TV technician for help. Any changes or modications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Where shielded interface cables have been provided with the product or specied additional components or accessories elsewhere dened to be used with the installation of the product, they must be used in order to ensure compliance
with FCC regulations.
AT-GAIN-120
7
Table of Contents
Introduction 9
Features 9
Package Contents 9
Panel Description 10
Installation 11
Audio Connectors 11
ANALOG IN / LINE OUT 11 4 / 8 Ω OUT 11
70V / 100V OUT 12 Trigger 12 Connection Instructions 13 Connection Diagram 14
Basic Operation 15
IP Conguration 15
Using the Rear Panel 15
Using Commands 16
Using the Web GUI 17 LED Indicators 19 Power Modes 20
Powering On or O 20
Auto Power Down mode 20
Hibernation mode 21
Input Switching 22
Manual Switching 22
Auto Switching 23 Network Audio 24
Dante Software Conguration 24
Enabling AES67 Support 25
Volume Control 27 Factory Reset 27
The Web GUI 28
Introduction to the Web GUI 28
Menu Bar 29
Status page 30 Firmware page 31 Network page 32 Control page 33 Users page 34 Audio page 35
Appendix 36
Updating the Firmware 36
Web GUI 36
USB 38
Rack Mount Installation 39 Network Audio Card Installation 40 Default Settings 43
Specications 44
Index 46
AT-GAIN-120
8

Introduction

The Atlona Gain™ 120 (AT-GAIN-120) is a compact power amplier designed for low or high impedance
applications. A mode selector switch allows it to deliver two channels of 60 watts each into 4 or 8 ohms, or a single channel of 120 watts at 70 or 100 volts. This Class-D amplier is energy ecient, ENERGY STAR® qualied, and is
also convection-cooled to allow installation in conference rooms and quiet installation environments without the need
for fans. In addition to the amplied speaker output, a line level audio output allows the incoming audio to be fed into an additional amplier or audio system. The Gain 120 is controllable via TCP/IP or external trigger, and can be integrated with Atlona AV switchers and HDBaseT™ receivers for a wide variety of sound reinforcement applications.

Features

Selectable low or high-impedance operation.
» 2 x 60 watts @ 4 or 8 ohms.
» 1 x 120 watts @ 70 or 100 volts.
Class-D ecient amplier design.
ENERGY STAR® qualied.
Convection cooled – no need for fans.
Available AES67 / Dante™ networked audio interface (AT-GAIN-NET) – receives two-channel audio from
OmniStream AV encoders or compatible audio devices.
Optional AT-RACK-1RU rack shelf highly recommended for rack installation.
Automatic standby after 25 minutes of inactivity to minimize power consumption.
Rear panel input level controls for setting audio system gain staging.
Integrated protection circuitry automatically activates in the event of clipping, short circuit, thermal overload, and more.
Low inrush current to prevent audible “thumps” when multiple amps are powered on simultaneously.
Balanced analog audio output for pass-through to an additional amplier or audio system.
Integrated ve-band equalizer.
TCP/IP control of volume level, muting, and EQ.
Ideal for IP-based control from Atlona Velocity Control System.
Trigger port ideal for occupancy sensor to remotely power down amplier or wake from standby.
Front panel signal status LEDs for power, signal presence, real-time volume level, device identication, and internal protection activation.
Rack-mountable 1U, half rack width enclosure.
Includes installation guide, power cable (US), and captive screw connectors.

Package Contents

1 x AT-GAIN-120 2 x Captive screw connector, 2-pin 1 x Captive screw connector, 4-pin 2 x Captive screw connector, 5-pin 1 x IEC power cord 1 x Installation Guide
AT-GAIN-120
9
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM

Panel Description

GAIN
Front
Rear
1
PWR
TM
4
LAN
5 107 9 1412
L
R
ANALOG IN
NET AUDIODEVICE ID
IP
RESET RESET
L R L R
LINE OUT
TRIGGER MODE
4 / 8 Ω OUT 70V / 100V OUT
CLASS 2 WIRING CLASS 2 WIRING
L R
-9
-4
-14
-19
-20
-22
dB
INPUT GAIN
-9
-4
-22
dB
100V
-2
-2
-14
-19
-20
2 3
VOL LEVEL
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
MODEL:
AT-GAIN-120
6 8 11 13 15
1 LED indicators
Displays the current state of the unit. Refer to LED
Indicators (page 19) for more information.
2 VOL LEVEL
Displays the output audio level.
3 FW
Connect a USB-to-mini USB cable to this port from a computer for rmware updates.
4 LAN
Connect an Ethernet cable from this port to the Local Area Network (LAN).
5 Removable Faceplate
Remove this faceplate to install the AT-GAIN-NET
(not included) card. Refer to Network Audio Card
Installation (page 40) for more information.
6 ANALOG IN
Connect an audio source to this port using the included 5-pin captive screw connector. Refer to
Audio Connectors (page 11) for wiring information.
7 RESET
Press and hold this button for 10 seconds to reset
the unit to factory-default settings. Refer to Factory
Reset (page 27) for more information.
9 IP RESET
Press and hold button this button for 10 seconds to switch between DHCP and static IP mode. Refer to
IP Conguration (page 15) for more information.
Also press and hold for 3 seconds to bring the unit out of hibernation mode. Refer to Power Modes
(page 20) for more information.
10 TRIGGER
Use this port to toggle the unit between on and standby or awaken the unit from hibernation mode.
11 4 / 8 Ω OUT
Connect a pair of 4 or 8 ohm speakers (low­impedance) to this port using the included 4-pin
captive screw connector.
12 INPUT GAIN
Use a regular screwdriver to adjust the input gain level for left and right channel.
13 70V / 100V OUT
Connect a distributed speaker system (high­impedance) to this port using the included 2-pin
captive screw connector.
14 MODE
Slide the switch to select between 4Ω, 8Ω, 70V, or
100V modes.
8 LINE OUT
Use the included 5-pin captive screw connector
to connect to another AT-GAIN-120, audio DSP, or
audio mixer. Refer to Audio Connectors (page 11) for more information.
AT-GAIN-120
15 PWR
Connect from a power source to the AT-GAIN-120 using the included IEC power cord.
10

Installation

Audio Connectors

The AT-GAIN-120 provides two audio ports which provide analog audio input and output. The ANALOG IN port can
be used to connect an audio digital signal processor (DSP) or other audio source device. Balanced or unbalanced
wiring is supported.
The LINE OUT port can be used to connect an audio output device or daisy-chain to another amplier.
NOTE: The LINE OUT port only outputs analog audio. This port cannot be used to output digital audio from the optional AT-GAIN-NET card. Also, volume mute, using the web GUI or the
VOUTMute command, will mute the LINE OUT pass-through.
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of each wire.
3. Connect the wires as shown, using either balanced or unbalanced wiring.

ANALOG IN / LINE OUT

The wiring for the ANALOG IN and LINE OUT ports, support either
balanced or unbalanced audio, as shown below. Both ports use the
included 5-pin captive screw connectors.
Balanced audio using XLR connectors Unbalanced audio using RCA connectors
-
-
Rear View
GND GND
+
2 1
3
-
+
-
2 1
3
Rear View
+
Side View Side View
GND
NOTE: The LINE OUT port is a xed-level analog output, only. There is no D/A conversion when
using the optional AT-GAIN-NET card.
+
GND

4 / 8 Ω OUT

Connect program/stereo speakers to the included 4-pin captive screw connector, then connect the terminal block to the 4 / 8 Ω OUT port. When connecting program / stereo speakers, set the MODE switch to
either 4 Ω or 8 Ω, depending upon the speakers impedance.
AT-GAIN-120
11
Installation

70V / 100V OUT

Connect a distributed speaker system to the included 2-pin captive screw connector, then connect the terminal block to the 70V / 100V
OUT port. When connecting program / stereo speakers, set the MODE switch to either 70V or 100V, depending upon the speakers.

Trigger

The AT-GAIN-120 provides a TRIGGER port allowing the AT-GAIN-120 to be connected to an occupancy sensor.
Voltage levels for this port are as follows:
Voltage level Function
Voltage is 0 or less than 3 V O
Voltage is 3 V or greater (30 V max.) On
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of each wire.
3. Connect the wires as shown.
AT-GAIN-120
12
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
Installation

Connection Instructions

The AT-GAIN-120 can be used with an optional network audio card, which supports Dante and AES76 audio streams. If this card will be installed, refer to Network Audio Card Installation (page 40) for more information before continuing with the following instructions. This network card is sold separately and is available from Atlona.
1. Connect an analog audio source, using the included 5-pin captive screw connector, to the AUDIO IN port.
Use the desired wiring conguration, on the previous page. Both balanced and unbalanced wiring are
supported.
2. Connect an analog audio output device, using the included 5-pin captive screw connector, to the LINE OUT
port. Use the desired wiring conguration, on the previous page. Both balanced and unbalanced wiring are
supported.
NOTE: Analog or NET audio (with optional card), are selectable from the web GUI, Atlona Velocity™, or thrid-party control using the API. Refer to the Stereo / Mono Audio Power Amplifer
120 Watts Application Programming Interface, on the Atlona web site for more information. In addtion, the LINE OUT port only outputs analog audio. This port cannot be used to output digital audio from the optional AT-GAIN-NET card.
3. Determine the use-case scenario of the AT-GAIN-120. The AT-GAIN-120 can be congured as either one of the following. Only one type of speaker connection is permitted at a time.
Distributed speaker system (high impedance)
Set the MODE switch to the required voltage setting: 70V or 100V. This mode is used for commercial
applications and longer speaker cable runs.
Program speakers / stereo (low impedance)
Set the MODE switch to the impedance setting of the speakers being connected: or .
This mode is used for consumer applications and shorter speaker cable runs.
L R
LAN
L
ANALOG IN
-9
-14
-19
-20
IP
RESET RESET
R
L R L R
LINE OUT
TRIGGER MODE
-22
dB
4 / 8 Ω OUT 70V / 100V OUT
CLASS 2 WIRING CLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-22
dB
-4
100V
-2
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
Program / stereo speakers (low impedance)
Distributed speakers (high impedance)
4. Connect the speakers to the proper port on the AT-GAIN-120, based on the selection made in the previous step.
5. Set the MODE switch to the proper setting, based on the type of speaker connection that is being used.
6. Connect the LAN port to a network switch for set up and control of the unit.
7. OPTIONAL: Connect the included 2-pin captive screw connector from the TRIGGER port to an automation control system.
8. Connect the included IEC power cord to the power receptacle.
9. Connect the IEC power cable to an available electrical outlet.
AT-GAIN-120
13
Program Speakers
Generic
SPEAKER SYSTEMS
Installation

Connection Diagram

Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Generic
SPEAKER SYSTEMS
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
Audio
Audio
Audio
Audio
Generic
SPEAKER SYSTEMSSPEAKER SYSTEMS
PWR
TM
GAIN
Distributed Speakers
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
VOL LEVEL
NET AUDIODEVICE ID
AT-GAIN-120
LAN
AT-UHD-CLSO-840
HDMI
Blu-ray player
INFO
POWER ENTER
FCN CANCEL EDID


HDMI
HDMI
AT-UHD-CLSO-840
HDMI
Precision Hardware Codec
I
0
4
media4
Codec
Media Player
IMPORTANT: When connecting speakers, either use a distributed speaker system or program/ stereo speakers. The AT-GAIN-120 does not support simultaneous distributed and program speaker
connections.
AT-GAIN-120
14
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM

Basic Operation

IP Conguration
The AT-GAIN-120 is shipped with DHCP enabled. Once connected to a network, the DHCP server (if available), will automatically assign an IP address to the unit. Execute the arp -a command at the Windows command line or use an IP scanner to locate the AT-GAIN-120 on the network.
If the AT-GAIN-120 is unable to detect a DHCP server, within 15 seconds, then the unit will be assigned the following IP conguration:
IP address 192.168.1.254
Subnet mask 255.255.0.0
Gateway 192.168.1.1
If a static IP address is desired, the unit can be switched to static IP mode. Use one of the following procedures to switch between DHCP and static IP mode. 192.168.1.254 is the default static IP address.

Using the Rear Panel

1. Make sure the AT-GAIN-120 is powered.
2. Press and hold the IP RESET button for approximately 10 seconds.
IP RESET button
L R
LAN
L
ANALOG IN
-9
-14
-19
-20
IP
RESET RESET
R
L R L R
LINE OUT
TRIGGER MODE
-22
dB
4 / 8 Ω OUT 70V / 100V OUT
CLASS 2 WIRING CLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-22
dB
-4
100V
-2
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
3. Release the IP RESET button once the PWR LED indicator on the front panel begins to ash. The number of ashes will indicate the currently selected IP mode.
POWER LED ashes Description
Two Static IP mode
Four DHCP mode
4. Once the unit has changed IP modes, the unit will shut down. To restart the unit, disconnect then reconnect the
power cable.
5. The unit is now set to the new IP mode and ready for use.
AT-GAIN-120
15
Basic Operation

Using Commands

Use the IPStatic and IPDHCP commands to switch between DHCP and static IP mode using Telnet. Refer to the
Application Programmers Interface documentation for more information. All commands and their arguments are
case-sensitive.
Setting static IP mode
1. Connect to the AT-GAIN-120 using Telnet.
2. At the command line, execute the IPDHCP command using the o argument, as shown.
IPDHCP o
3. Execute the IPStatic command. This command requires three arguments: the desired IP address of the
AT-GAIN-120, the subnet mask, and the gateway address. All arguments must be entered in dot-decimal
notation. The following is an example:
IPStatic 192.168.1.112 255.255.255.0 192.168.1.1
4. Power-cycle the AT-GAIN-120.
5. The unit is now set to static IP mode and ready for use.
Setting DHCP mode
1. Connect to the AT-GAIN-120 using Telnet.
2. At the command line, execute the IPDHCP command using the on argument, as shown. All characters are
case-sensitive.
IPDHCP on
3. Power-cycle the AT-GAIN-120
4. The unit is now set to DHCP mode and will be assigned an IP address by the DHCP server (if present).
AT-GAIN-120
16
Basic Operation

Using the Web GUI

The Network page (page 32) in the web GUI allows the option for the AT-GAIN-120 to use either DHCP or static IP
mode. In order to access the web GUI, the IP address of the AT-GAIN-120 must be known.
1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Network tab, located on the side menu bar.
Setting static IP mode
a. Click OFF, next to DHCP.
b. Enter the required information in the IP Address, Subnet, and Gateway elds.
Setting DHCP mode
a. Click ON, next to DHCP.
4. Click the Save button to save the changes.
AT-GAIN-120
17
Basic Operation
5. The following message box will be displayed:
6. Click OK to accept the changes or click Cancel to abort changes and return to the Network page.
AT-GAIN-120
18
Basic Operation

LED Indicators

The LED indicators on the front panel, provide information on the current state of the AT-GAIN-120. Refer to the table below for more information.
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
GAIN
PWR
TM
NET AUDIODEVICE ID
VOL LEVEL
LED Indicator State Description
PWR Solid green
O
Unit is powered.
Unit is not powered.
Check the power cable between the AT-
GAIN-120 and the electrical outlet.
Make sure that the electrical outlet is live.
Rapid ashing green
Firmware update is in progress. Refer to Updating
the Firmware (page 36) for more information.
SIGNAL Solid green An active signal is present on the selected input.
DEVICE ID O
Flashing green
ANALOG IN Solid green
O
NET AUDIO Solid green
O
VOL LEVEL Solid green
Solid amber
Solid red
Unit is not in device ID mode.
Unit is in “blink” mode. This LED indicator will ash once each second, and can be used to help physi-
cally identify the unit in a rack shelf.
The ANALOG IN port is the active input.
The ANALOG IN port is not the active input.
The INPUT port on the network card is the active
input. This LED indicator is only functional when the
optional AT-GAIN-NET card is installed. Note that
this LED indicator does not indicate the presence of
an audio signal.
The INPUT port is not the active input.
Acceptable range for output volume.
Output volume level is approaching audio clipping.
Audio clipping.
AT-GAIN-120
19
Basic Operation

Power Modes

The following section discusses the power mode features which have been integrated into the AT-GAIN-120. Power modes are located under the Control tab within the web GUI.
1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Control tab, located on the side menu bar. The Control Settings section will be displayed.
Powering On or O
Click the OFF option to power-o the AT-GAIN-120. When powered-o, audio output is disabled but both the LAN port and INPUT port (AT-GAIN-NET audio card, only) will remain active. To power-on the AT-GAIN-120, after it has
been powered-o, any one of the following methods may be used:
Press and hold the IP RESET button for a minimum of 3 seconds, but not more than 5 seconds.
Pull the TRIGGER port from low to high. Unit Trigger must be enabled for this to function.
Set Power to the ON setting, in the web GUI.
Route Dante / AES67 audio.

Auto Power Down mode

Enabling this mode will automatically power-down the AT-GAIN-120 if no audio input signal is present on either the INPUT port (AT-GAIN-NET audio card, only) or the ANALOG IN port, after the specied time interval. When the AT- GAIN-120 enters Auto Power Down mode, the Power option will be set to OFF and the front-panel LED indicators will turn o. In Auto Power Down mode, power consumption is limited to 2.2 W. By default this feature is enabled.
Note that when this mode is enabled, the AT-GAIN-120 only monitors the existence of an audio input signal, not the
physical audio connection. Refer to the next page for instructions.
AT-GAIN-120
20
Basic Operation
1. Click the ENABLE option, if it is not selected.
2. Set the time interval, which must elapse, before the AT-GAIN-120 powers-down. The default setting is 15 minutes.
3. Click the Save button.

Hibernation mode

Enabling this mode will place the AT-GAIN-120 into a very-low power mode where power consumption is limited to
0.5 W. When in hibernation mode, there will be no audio output or network communication. The PWR LED indicator
will blink once every second to indicate that the AT-GAIN-120 is in hibernation mode. By default this feature is disabled.
To wake the AT-GAIN-120 from hibernation mode, use one of the following methods:
Press and hold the IP RESET button on the rear panel for approximately 3 seconds, but no longer that 5 sec­onds, using the end of a paper clip or other pointed object.
Pull the trigger high using a control system such as Atlona Velocity. Note that even if the Unit Trigger option is set to DISABLE, this method will still wake the AT-GAIN-120.
1. Click the ENABLE option, if it is not selected. The following dialog will be displayed:
WARNING: If exiting hibernation mode, do not hold the IP RESET button for longer than 5 seconds. If this occurs, then the AT-GAIN-120 will switch IP modes.
To cancel, before entering hibernation mode, click the CANCEL button. Otherwise, once the dialog time expires, the AT-GAIN-120 will be placed in hibernation mode. To wake the AT-GAIN-120, use one of the methods listed above.
AT-GAIN-120
21
Basic Operation

Input Switching

When the optional AT-GAIN-NET card is installed, switching between the ANALOG IN and the audio input on the AT- GAIN-NET card can be performed either manually or automatically. The following section covers both methods. The AT-GAIN-NET card is available from Atlona.

Manual Switching

1. Open the desired web browser and enter the IP address of the AT-GAIN-120.
2. Log in, using the required credentials. The factory-default username and password are listed below:
Username: admin
Password: Atlona
3. Click the Audio tab, located on the side menu bar. The Audio and Equalization settings will be displayed.
4. Click the Inut Selection drop-down list to select the desired audio input. The currently selected audio input will be display in both the web GUI and on the front panel LED indicators. Refer to LED Indicators (page 19) for more information.
AT-GAIN-120
22
Basic Operation

Auto Switching

When auto-switching is enabled, the AT-GAIN-120 will automatically switch audio inputs, based on the presence of an input signal. Auto-switching is enabled, by default. If the AT-GAIN-NET card is not installed, this feature will not have any eect.
NOTE: In order to Telnet to the AT-GAIN-120, the IP settings must be set correctly. Refer to IP
Conguration (page 15) for more information.
1. Establish the IP address of the AT-GAIN-120.
2. Launch a Telnet client and connect to the AT-GAIN-120. In this example, the built-in Telnet client, which is included with Windows 10, is used:
a. Click the magnifying glass icon, in the lower-left corner of the Windows desktop.
b. Type cmd, then press [ENTER]. The Command Prompt window will be displayed.
c. At the prompt, type telnet. The following will be displayed:
Welcome to Microsoft Telnet Client
Escape Character is ‘CTRL+]’
Microsoft Telnet>
d. Type the letter o, followed by the IP address of the AT-GAIN-120. For example:
Microsoft Telnet>o 10.20.200.75
e. Press [ENTER]. If the connection was successful, the following text will be displayed:
Welcome to TELNET
f. Type AutoSW on, then press [ENTER]. Specifying the on parameter will enable auto-switching. The AT-
GAIN-120 will verify that auto-switching is enabled, by echoing the command line to the screen:
AutoSW on
g. To disable auto-switch, type AutoSW o at the command line.
AT-GAIN-120
23
Basic Operation

Network Audio

The AT-GAIN-120 supports Dante and AES67 audio streams with the addition of the optional AT-GAIN-NET audio card, which can be purchased from Atlona. Refer to Network Audio Card Installation (page 40) for information on
card installation.
For setup and control of Dante / AES67 audio routing and conguration, refer to the Audinate Dante Controller software. AMS 2.0 and the web graphical interface of the AT-GAIN-120 supports basic network, control, and audio
level adjustments.
IMPORTANT: The AT-GAIN-120 must be connected within the same network segment as the Dante
Controller, in order to utilize mDNS.
Dante Software Conguration
1. Download the Audinate Dante Controller software from the following URL:
https://www.audinate.com/products/software/dante-controller
NOTE: The AT-GAIN-120 was tested using Audinate Dante Controller software v4.0.6.5 and Java v1.8.0. Atlona recommends using Audinate Dante Controller software v4.0.6.5 or higher.
2. Make sure that an Ethernet cable is connected from the INPUT port on the rear panel to the network.
3. Launch the Dante Controller software.
The AT-GAIN-NET network audio card will appear as NetAudio-xxxxx, where xxxxx refers to the last ve hexadecimal digits of the network card MAC address.
AT-GAIN-NET card
AT-GAIN-120
24
Basic Operation
4. Click the icon, next to the NetAudio-xxxxx card, under Dante Receivers, to view the channels. The AT­GAIN-NET audio card has a maximum of two channels of audio. Refer to the Dante Controller User Guide for details on operation.
Click to expand

Enabling AES67 Support

In order to route AES67 audio over IP, both the transmitter and receiver must support AES67 and have this option enabled.
1. Double click the network card, under Dante Receivers
AT-GAIN-120
25
2. A separate window will open. Click the AES67 tab.
3. Click the New drop-down list and select Enabled.
Basic Operation
4. A message box will be displayed prompting to conrm AES67 is to be enabled. Click Yes .
5. Another message box will be displayed. In order for AES67 to be enabled, the card must be rebooted. Click Ye s
to reboot the network card.
6. AES67 is now enabled.
AT-GAIN-120
26
Basic Operation
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM

Volume Control

Output audio level is controlled hrough the built-in web GUI. Volume control only aects the 4 / 8 Ω OUT and 70V / 100V OUT ports. Adjusting the audio output volume does not aect the LINE OUT port, as this port is a xed-level
output. The LINE OUT port is designed to be connected to a pre-amp device.
1. Log in to the web GUI. Refer to Introduction to the Web GUI (page 28) for more information.
2. Click the Audio menu.
3. Use the Volume slider, under the Equalization section, to adjust the output volume.
4. Click the slider controls on the 5-band graphic equalizer to adjust the audio frequency output, if desired. By
default, the graphic equalizer produces a “at” response.

Factory Reset

If necessary, the AT-GAIN-120 can be reset to factory-default settings. Note that the AT-GAIN-120 will be placed in DHCP mode, as part of the reset procedure. The AT-GAIN-120 can also be reset through the web GUI. Refer to the
Control page (page 33) for more information.
1. Make sure the unit is powered-on.
2. Press and hold the RESET button for 10 seconds, using the end of a paper clip or other pointed object.
3. Release the RESET button.
RESET button
L R
-9
-14
-19
-20
IP
RESET RESET
L
R
LAN
ANALOG IN
L R L R
LINE OUT
TRIGGER MODE
-22
dB
4 / 8 Ω OUT 70V / 100V OUT
CLASS 2 WIRING CLASS 2 WIRING
-4
-2
-14
-19
-20
INPUT GAIN
-9
-4
-22
dB
100V
-2
70V
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
MODEL:
AT-GAIN-120
AT-GAIN-120
27

The Web GUI

Introduction to the Web GUI

The AT-GAIN-120 includes a built-in web GUI. Atlona recommends that the web GUI be used to set up the
AT-GAIN-120, as it provides intuitive management of all features.
The AT-GAIN-120 is shipped with DHCP enabled. Once connected to a network, the DHCP server will automatically assign an IP address to the unit. Use an IP scanner to determine the IP address of the AT-GAIN-120. If a static IP address is desired, refer to IP Conguration (page 15). The default static IP address of the AT-GAIN-120 is
192.168.1.254.
1. Launch a web browser.
2. In the address bar, type the IP address of the AT-GAIN-120.
3. The Login page will be displayed.
4. Type admin, using lower-case characters, in the Username eld.
5. Type Atlona in the Password eld. This is the default password. The password eld is case-sensitive. When the
password is entered, it will be masked. The password can be changed, if desired. Refer to Users page (page
34) for more information.
6. Click the Login button or press the ENTER key on the keyboard.
AT-GAIN-120
28
The Web GUI
7. The Status page will be displayed.
8. To logout of the web GUI at any time, click Logout on the side menu bar. Once logged out, the AT-GAIN-120 will display the login screen.

Menu Bar

The window on the left side of the screen is the menu bar. The menu system is divided into three sections:
Home, Settings, and Conguration. When the mouse is moved over each menu item, it will be highlighted in black. Click the menu item to go that page.
Menu bar
AT-GAIN-120
29

Status page

The Web GUI
Download Log
Click this button to download a log of command events
to the computer’s hard disk.
Model
The SKU of this product.
Firmware
The current rmware version installed.
MAC Address The MAC address of the AT-GAIN-120.
Serial Number
The serial number of the AT-GAIN-120.
Temperature
The current internal ambient temperature of the AT-
GAIN-120.
Operating Time
The time in which the unit has been in the “on” state since it was last rebooted.
Save
Click this button to save the system settings to a local le. System settings les are saved in .bin (binary) format. The default system settings lename
is systemsettings.bin. It is recommended to save the
system settings before performing a rmware update.
Status (progress bar) Displays the status of saving and loading system settings les.
Browse
Click this button to select the desired system settings le. Click the Load button to upload the settings le to
the AT-GAIN-120.
Load
Click this button to upload the selected settings le to the AT-GAIN-120. While the system settings le is being
loaded, the Status progress bar will display the current progress.
AT-GAIN-120
30

Firmware page

The Web GUI
Current Firmware
The current rmware version installed.
Status (progress bar) Displays the status of loading new rmware during a rmware update procedure.
Browse
Click this button to select the rmware le. Click the Load button to begin the update procedure. Refer to Updating
the Firmware (page 36) for more information.
Load
Click this button to upload the selected rmware le to the AT-GAIN-120. While the system settings le is being loaded, the Status progress bar will display the current progress.
AT-GAIN-120
31
The Web GUI

Network page

After pressing the Save button, a reboot message will appear at the top of the web GUI. The AT-GAIN-120 must be
rebooted when any of the network settings have changed.
DHCP Click the ON button to enable DHCP. Click the OFF
button to enable static IP mode. In static IP mode, the IP Address, Subnet, and Gateway elds can be modied.
IP Address
Enter the IP address of the AT-GAIN-120 in this eld. This eld can only be changed when DHCP is set to
OFF.
Subnet
Enter the subnet mask in this eld. This eld can only be changed when DHCP is set to OFF.
Gateway
Enter the gateway (router) IP address in this eld. This eld can only be changed when DHCP is set to OFF.
Telnet Port
Enter the Telnet listening port in this eld. The default
port is 23.
HTTP
Enter the HTTP listening port in this eld. The default port is 80. This eld cannot be modied.
Hostname
Enter the desired hostname in this eld. By default, the hostname is the product (SKU) plus the last ve digits of the unit serial number.
Telnet Login Mode Click the ON button to prompt for username and password credentials. Username and password
credentials are the same as the web GUI login
credentials. Click the OFF button to create an open Telnet session that does not require login credentials. The default setting is OFF.
Save / Cancel Click the Save button after any changes have been made. Click the Cancel button to abort changes.
IP Timeout
Enter the time-out interval (in seconds) in this eld. This eld represents the time interval before the TCP/IP
connection times out.
AT-GAIN-120
32

Control page

The Web GUI
Power Click the ON button to power-on the AT-GAIN-120. Click the OFF button to power-o the unit.
Auto Power Down
Enables or disables auto power down mode. Refer to Auto Power Down mode (page 20) for more information.
Auto Power Down Time (min)
Specify the time interval before the AT-GAIN-120 goes into auto power down mode. Refer to Auto Power Down
mode (page 20) for more information.
Hibernation
Enables or disables hibernation mode. Refer to Hibernation mode (page 21) for more information.
Unit Trigger
Enables or disables the trigger.
Save / Cancel Click the Save button to apply changes. Click the Cancel button to abort changes.
Factory Default
Click this button to reset the AT-GAIN-120 to factory-default settings.
Blink
Click the Blink button to start blinking the DEVICE ID LED indicator. This feature is useful to identify the unit when multiple units are being used.
AT-GAIN-120
33

Users page

The Web GUI
Current Username
The administrator username. This eld cannot be changed.
Password
Enter the password for the administrator in this eld. Special characters (e.g. #, %, @, &, etc.) are not permitted.
Change Admin Password
Old password
Enter the current password in this eld. The default password is Atlona.
New Password
Enter the new password in this eld.
Conrm Password
Verify the new password by entering it in this eld.
Save / Cancel Click the Save button to apply all changes. Click the Cancel button to abort changes.
AT-GAIN-120
34

Audio page

The Web GUI
Input Selection Click this drop-down list to select the audio input: Analog or Net Audio. The Net Audio selection will only be
available if the optional AT-GAIN-NET card is installed. This card is available from Atlona.
Output Status Displays the current output impedance setting.
Equalization (Graphic, 5-band)
Click and drag each of these sliders to adjust the output frequency range. Each band has a range from -10 dB to +10 dB. The following table provides a general breakdown of each frequency in the audio spectrum.
Slider Description General Range
40 Hz Sub-bass frequency 20 Hz - 50 Hz
150 Hz Bass frequency 50 Hz - 200 Hz
500 Hz Upper-bass to lower midrange 200 Hz - 800 Hz
2 kHz Midrange to upper midrange 800 - 4 kHz
10 kHz “Brilliance” frequency 7 kHz - 12 kHz
Auto Reset Click this button to reset all equalizer bands to their default settings. Refer to Default Settings (page 43) for more information.
Mute
Click this button to mute the audio output. Note that clicking this button will mute all audio output ports: LINE OUT, 4 / 8 Ω OUT, and 70V / 100V OUT.
Volume
Click and drag this slider to adjust the output volume. This volume slider only aects the output volume on the speaker outputs. It does not aect the audio volume of the LINE OUT port, as this port is a xed-level port. Note that the volume range for this slider is not measured in decibels.
AT-GAIN-120
35

Appendix

Updating the Firmware

The AT-GAIN-120 can only be updated either through the web GUI or using the mini-USB port on the front panel.
IMPORTANT: As of this writing, Google Chrome is the only browser that is supported for rmware updates. Other browsers will be supported in future versions of rmware.

Web GUI

Required items:
Firmware
IP address of the AT-GAIN-120
Computer on the same network as the AT-GAIN-120
Username and password to access the web GUI
1. Verify that an Ethernet cable is connected between the AT-GAIN-120 and the network. The computer used to
access the web GUI must be on the same network as the AT-GAIN-120.
2. Type the IP address of the AT-GAIN-120 into the web browser, as shown in the example below.
3. The login screen will be displayed. Login using the username and password. The default login credentials are:
Username: admin
Password: Atlona
AT-GAIN-120
36
Appendix
4. Click Status in the menu bar on left side of the screen.
5. Click the Save button.
6. The Save As dialog box will be displayed. Select the folder where the le will be saved. Click the Save button to save the le. The le is saved in .bin format and uses the default name of systemsettings.bin.
7. Click Firmware on the left side of the screen.
8. Click the Browse button to select the rmware le.
9. Click the Load button to begin the upgrade process and the PWR LED indicator will ash rapidly. A progress bar
will be displayed during the update process. Once the update has been completed, re-login to the webGUI.
WARNING: Power must not be disconnected or interrupted during the rmware update process.
AT-GAIN-120
37
USB
Required items:
Firmware
USB Type A to Mini-USB Type B cable
Computer with USB port
1. Download the latest rmware from the Atlona web site.
2. Disconnect the power from the AT-GAIN-120.
3. Connect the USB cable from the FW port on the front panel to the computer with the rmware.
4. Reconnect the power to the AT-GAIN-120. After a few seconds, a drive folder will be displayed.
Appendix
5. Delete all existing les on this drive.
6. Drag-and-drop the rmware le on the computer to this folder. Wait for the le to be copied.
7. Disconnect both the USB cable and power cable from the AT-GAIN-120.
8. Reconnect the power to the AT-GAIN-120. The PWR LED indicator on the front panel will rapidly ash green,
indicating that the rmware upgrade is in process; this should take only a few seconds.
Rapidly flashes green
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
GAIN
PWR
TM
NET AUDIODEVICE ID
VOL LEVEL
9. The rmware upgrade process is complete.
AT-GAIN-120
38
Appendix
PWR
VOL LEVEL
AUDIO AMPLIFIER
FWSIGNAL ANALOG IN
NET AUDIODEVICE ID
GAIN
TM
LAN
INPUT
NETWORK AUDIO
RESET RESET
LINE OUT
CLASS 2 WIRING CLASS 2 WIRING
TRIGGER MODE
MODEL:
dB
-22
-2
-4
-20
-19
-14
-9
-22
-2
-4
-20
-19
-14
-9
dB
ANALOG IN
L
4 / 8 Ω OUT 70V / 100V OUT
AT-GAIN-120
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
L R
IP
4Ω 8Ω 100V
70V
R
INPUT GAIN
L R

Rack Mount Installation

The AT-GAIN-120 can be mounted in dierent ways, based on the number of units that are being installed. When installed into a standard 19” rack, the AT-RACK-1RU will need to be purchased from atlona.com.
The AT-RACK-1RU can be used to either mount a single AT-GAIN-120 unit or it can be used to mount multiple half-
rack Atlona products, such as a AT-GAIN-120 and a AT-UHD-SW-510W.
IMPORTANT: Before mounting the AT-GAIN-120 to the AT-RACK-1RU, remove the rubber feet from the bottom of the unit.
AT-RACK-1RU
1. Place the AT-GAIN-120 on a at surface, upside down.
2. Turn the AT-RACK-1RU upside down, placing it on top of the AT-GAIN-120, as shown, and align the holes of the
AT-RACK-1RU, marked in blue, with the mounting holes on the AT-GAIN-120.
3. Use the included 7 mm screws to secure the AT-RACK-1RU to the AT-GAIN-120.
IMPORTANT: To prevent possible damage to the device, rack, and/or screws, do not overtighten or
use high-torque devices when securing the devices to the rack.
ANALOG IN
VOL LEVEL
LINE OUT
L
R
CLASS 2 WIRING CLASS 2 WIRING
4 / 8 Ω OUT 70V / 100V OUT
L R
RESET RESET
NETWORK AUDIO
IP
TRIGGER MODE
NET AUDIODEVICE ID
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
INPUT GAIN
dB
-22
-20
-19
dB
-14
-22
-20
-9
-19
-2
L R
-4
-14
TM
GAIN
-9
PWR
-2
-4
8Ω 100V
70V
LAN
MODEL:
AT-GAIN-120
ANALOG IN
VOL LEVEL
INPUT
FWSIGNAL ANALOG IN
LINE OUT
L
AUDIO AMPLIFIER
R CLASS 2 WIRING CLASS 2 WIRING
4 / 8 Ω OUT 70V / 100V OUT
L R
RESET RESET
NETWORK AUDIO
IP
TRIGGER MODE
NET AUDIODEVICE ID
PWR: 100-120VAC 60Hz 120W
220-240VAC 50Hz 120W
INPUT GAIN
dB
-22
-20
-19
dB
-14
-22
-20
-9
-19
-2
L R
-4
-14
TM
GAIN
-9
PWR
-2
-4
8Ω 100V
70V
MODEL:
AT-GAIN-120
AT-GAIN-120
39
LAN
INPUT
FWSIGNAL ANALOG IN
AUDIO AMPLIFIER
Appendix

Network Audio Card Installation

The AT-GAIN-NET is an optional audio card which allows Dante and AES67 audio streams to be used with the AT­GAIN-120. Follow the instructions below to install the AT-GAIN-NET audio card.
WARNING: To prevent the risk of electrocution or electric shock, always disconnect the power cord
from the AT-GAIN-120 before installing or removing the AT-GAIN-NET network card.
1. Disconnect the power cord from AT-GAIN-120.
2. Set the AT-GAIN-120 on a at surface, free of obstructions. Position the AT-GAIN-120 as shown in the picture
below.
3. Using a small Phillips-head screwdriver, remove the two screws holding the faceplate in place. After the faceplate is removed, set it aside. Keep the two screws to attach the included faceplate with the INPUT card.
Phillips-head screws
AT-GAIN-120
40
4. Locate the plastic guides on either side of the expansion slot.
Appendix
Plastic Guides
Upper Rail
Lower Rail
5. Carefully position the card between the upper and lower rail of each guide, and gently push the AT-GAIN-NET network card forward, until it locks in place. The card will make a small snapping sound, once the card is in place.
IMPORTANT: When handling the card, avoid touching the components. Always hold the card by
the edges. Electrostatic discharge can damage components and the card.
AT-GAIN-120
41
Appendix
Insert direction
6. Locate the included AT-GAIN-NET faceplate with the INPUT port and install the faceplate using the screws from Step 2, as shown below. Do not over-tighten the screws using high-torque devices, as this may cause damage to the screws or the faceplate assembly.
Included AT-GAIN-NET Faceplate
7. Card installation is complete.
8. Connect the power cable to the AT-GAIN-120.
9. Connect an Ethernet cable, with an encoded digital audio stream, to the INPUT port. Refer to the Network Audio
(page 24) for information on using Dante and AES67 audio streams.
AT-GAIN-120
42

Default Settings

The following table lists the factory-default settings for the AT-GAIN-120.
Feature Settings
Appendix
Network DHCP
Static IP address Subnet
Gateway
Telnet Port HTTP Port IP Timeout
Hostname
Telnet Login Mode
Control Power
Auto Power Down Auto Power Down Timer (min) Hibernation
Unit Trigger
Blink
Users Admin username
Admin password
Audio Input Selection
Equalization bands
40 Hz 150 Hz 500 Hz 2 kHz 10 kHz Volume
ON
192.168.1.254
255.255.0.0
192.168.1.1 23 80 300 AT-GAIN-120-[last ve digits of serial number] OFF
OFF Enabled 15
Disabled Disabled Disabled
admin Atlona
Analog
0 0 0 0 0 30
AT-GAIN-120
43
Specications
Connectors, Controls, and Indicators
INPUT 1 - RJ45 (AT-GAIN-NET network audio card, only), 100 Mbps
LAN 1 - RJ45
ANALOG IN 1 - 5-pin captive screw, balanced: 20 k Ω, unbalanced: 10 kΩ
LINE OUT 1 - 5-pin, 3.5mm
TRIGGER 1 - 2-pin captive screw
4 / 8 Ω OUT 1 - 4-pin, 5.08 mm lock-down screw connector
70V / 100V OUT 1 - 5-pin, 3.5mm
FW 1 - mini-USB, type-B
INPUT GAIN 2 - Rotary pots, L/R channel
MODE 1 - Slider switch, 4-pole, 4 Ω / 8 Ω / 70 V / 100 V
RESET 1 - Push button, tact-type
IP RESET 1 - Push button, tact-type
Power 1 - IEC power receptacle
PWR 1 - LED indicator, green
SIGNAL 1 - LED indicator, green
DEVICE ID 1 - LED indicator, green
ANALOG IN 1 - LED indicator, green
NET AUDIO 1 - LED indicator, green
VOL LEVEL 1 - Multi-LED indicator
Appendix
Input Signal
Analog Input Balanced: 20 kΩ, unblanced: 10 kΩ
CMRR 51 dB / 58 dB
Detection Threshold 0 dBV = 2.218 dBu
Output Signal
Distributed speakers (mono) 70 V / 100 V
Program speakers (stereo) 4 Ω / 8 Ω, line-level
Power 70 V = 120 Vrms (bridge mode)
100 V = 120 Vrms (bridge mode)
4 / 8 Ω = 60 W per channel
Audio Processing
D/A Conversion 24-bit, selectable sampling rate
Audio Formats 24-bit uncompressed, selectable at 44.1,48, 88.2, and 96 kHz sampling rate
Latency 2 ms
Signal Processing Volume, Auto on/off signal sensing, 80 Hz HPF
Network Audio Transport Dante, AES67
Equalization 5-band, adjustable: 40 Hz, 150 Hz, 500 Hz, 2 kHz, and 10 kHz bands
Range: -10 dB to +10 dB
AT-GAIN-120
44
Appendix
Audio Performance
Frequency Response 20 Hz - 20 kHz, ±2 dB @ 4 Ω load
THD + N < 0.1% @ 1kHZ, 3 db below clipping
SNR > 90 dBA WTD
Damping Factor < 90 @ 8 Ω
Amplier Type Class D
Temperature Fahrenheit Celsius
Operating 32 °F to 122 °F 0 °C to 50 °C
Storage -40 °F to 158 °F -40 °C to 70 °C
Humidity (RH) 90% RH, non-condensing
Power
Standby Mode Powers down after 5 - 25 minutes (adjustable) of no signal; complies with ENERGY
STAR power consumption limits of < 0.5 W in standby mode
Consumption 120 W (max.)
Standby Consumption normal standby < 0.5 W
network standby < 2 W
Supply 100 - 240 V AC, 50/60 Hz, 120 W
Dimensions Inches Millimeters
H x W x D 1.69 x 8.66 x 12.99 43 x 220 x 330
Weight Pounds Kilograms
Device 19.84 9
Certication
Device CE, RoHS, WEEE, FCC, ENERGY STAR
®
AT-GAIN-120
45

Index

A
Appendix 36 Audio
connectors 11 distributed speakers 11 impedance 11
Auto power-down. SeePower modes: auto power-
down
Auto-switching 23
C
Conguration
IP. SeeIP conguration
Connection
diagram 14 instructions 13
Contents
package 9
Customer support 3
D
using commands 16 using rear panel 15 using the web GUI 17
L
LED indicators 19
M
Mode switch
settings 13
N
Network audio
AES67 support 25 card installation 40
Dante conguration 24
O
Operating notes 3
Default setttings 43 Description
front / rear panel 10
E
Equalizer
adjusting 27, 35 frequency spectrum 35
F
FCC statement 7 Features 9 Firmware
displaying 30, 31 updating using the web GUI 36 updating using USB 38
H
Hibernation mode. SeePower modes: hibernation
mode
I
Input switching
automatic 23 manual 22
Installation 11
IP conguration
P
Panel descriptions 10
Password
changing 34 default 28
Power modes
auto power-down 20 hibernation mode 21
powering on/o 20
R
Rack mount
installation 39
Resetting
to factory-default 27
S
Safety information 6 Speakers
distributed 13 program/stereo 13
Specications 44 Switching
auto 23 manual 22
AT-GAIN-120
46
T
Trigger
voltage levels 12
U
Users
primary user name 28
V
Volume
adjusting 27, 35
W
Warranty 4 Web GUI 28
Index
AT-GAIN-120
47
atlona.com 877.536.3976 41.43.508.4321
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