EAW UXA4403 User manual

UXA4403
User Manual

Technical and Safety Notices
Please read the following important technical, safety
and environmental notices before installing and using
your amplier.
Technical Notices
All reasonable design and engineering steps have been taken
to ensure that these ampliers always perform satisfactorily
in their intended application and environment and will provide
appropriate levels of support to ensure that all reasonable
customer needs and expectations are met. Such support
however is contingent on the following provisions.
1. These ampliers are Class-I products and should be installed
with a mains cable including the required earth connection to
comply with the Safety Class-I.
2. These ampliers should always be installed by competent
and qualied personnel. Amplier damage or failure caused
by installation or operational errors may invalidate support,
warranty or guarantees of performance.
3. These ampliers are not suitable for use in locations where
they may be accessible to minors.
4. These ampliers are intended to be used specically for the
amplication of audio signals and for connection to moving-coil
loudspeaker systems. Use of these ampliers for amplication
of signals outside the audio band (20Hz to 20kHz) or to
drive transducers other than moving-coil loudspeakers may
invalidate support, warranty or guarantees of performance.
5. These ampliers should only be used within professionally
installed and congured audio systems comprising input
and output ancillary equipments that is known to be of an
appropriate level of performance and in good operating
condition. Any damage to, or unsatisfactory performance from,
these ampliers caused by inadequate or failed input or output
ancillaries may invalidate support, warranty or guarantees of
performance.
6. These ampliers are intended to be installed and operated
indoor in a controlled environment (pollution degree, PD2)
within an ambient temperature range of 0°C to 40°C. These
ampliers are not intended for use above 2000 meters above
sea level. Ampliers installed or operated in environments
outside these limits may invalidate support, warranty or
guarantees of performance.
7. Specic warranty terms are the responsibility of the amplier
re-seller.
Safety and Environmental Notices
Note: The intent of the lightning ash with arrowhead symbol
in a triangle is to alert the user to the presence of uninsulated
“dangerous” voltage within the product’s enclosure that may be of
sufcient magnitude to constitute a risk of electric shock to humans.
Note: The intent of the exclamation point within an equilateral
triangle is to alert the user to the presence of important safety, and
operating and maintenance instructions in this manual.
WARNING! TO PREVENT FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE.
Ambient Temperature Note: If this equipment is
operated in a conned or multiple rack installation, the
internal ambient operating temperature may exceed
the external ambient temperature.
It is important to ensure in these
circumstances that the published
maximum operating temperature for the
equipment is not exceeded.
Reduced Air Flow: Ensure that rack or
other closed installation does not restrict
the cooling airow required for safe and
reliable operation of the equipment.

Technical and Safety Notices
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Do not submerge the equipment in water or liquids.
7. Do not use any aerosol spray, cleaner, disinfectant or
fumigant on, near or into the equipment.
8. Clean only with a dry cloth.
9. Do not block any ventilation opening. Install in accordance
with the manufacturer’s instructions.
10. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including ampliers)
that produce heat.
11. To reduce the risk of electrical shock, the power cord shall
be connected to a mains socket outlet with a protective
earthing connection.
12. Do not defeat the safety purpose of the polarized or
grounding type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the
third prong are provided for your safety. If the provided
plug does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
13. Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
14. Do not unplug the unit by pulling on the cord, use the plug.
15. Only use attachments/accessories specied by the
manufacturer.
16. Unplug this apparatus during lightning storms or when
unused for long periods of time.
17. Refer all servicing to qualied service personnel. Servicing
is required when the apparatus 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 apparatus,
the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
18. The appliance coupler, or the AC Mains plug, is the AC
mains disconnect device and shall remain readily accessible
after installation.
19. Adhere to all applicable, local codes.
20. Consult a licensed, professional engineer when any
doubt or questions arise regarding a physical equipment
installation.
Environmental Statement
This product complies with international
directives, including but not limited to the
Restriction of Hazardous Substances (RoHS)
in electrical and electronic equipment, the
Registration, Evaluation, Authorization and
restriction of Chemicals (REACH) and the
disposal of Waste Electrical and Electronic Equipment (WEEE).
Consult your local waste disposal authority for guidance on
how properly to recycle or dispose of this product.

Introduction and Overview
1. Introduction
UXA4403 power ampliers have been designed to provide
congurable, consistent and reliable high performance
audio power amplication for residential, commercial and
entertainment applications.
This manual covers the features, installation and functions
of the UXA4403. Please read the manual fully before
installing and using an amplier. If you have any questions
regarding amplier conguration, installation or operation
please contact the appropriate customer support portal.
Following this introduction, the manual is divided into sections
covering the following topics:
• 2. Overview
• 3. Carton Contents
• 4. Installation
• 5. Conguration
• 6. Connections
• 7. Operation
• 8. Specications
2. Amplier Overview
UXA4403 ampliers are a full rack width, 2U format power
ampliers that can drive both conventional low impedance (Lo-Z,
4Ω to 16Ω) loudspeakers and high impedance (Hi-Z, 70V/100V)
transformer coupled loudspeakers. They provide four analog
inputs, one stereo S/PDIF digital input, and either two or four
outputs (Lo-Z mode), or one or two outputs (Hi-Z or Lo-Z BTL
mode). UXA4403 amplier model output channel counts and
power outputs are as follows:
[Mode Channels Max Rated Output per Channel
Lo-Z Four 750 Watts
Lo-Z (BTL) Two 1500 Watts
Hi-Z Two 1500 Watts
Note: In Lo-Z BTL (bridge-tied load) mode, two amplier output
channels are combined to create a single, double power output
channel. BTL mode can be engaged via the amplier Output
Mode conguration setup menu described in Section 5 of this
manual.

Introduction and Overview
2.1 Connections and Power Switching
UXA4403 signal input and output connections are accomplished
via RCA Phono and Euroblock style connectors. A GPIO (General
Purpose In/Out) Euroblock connector enables some amplier
functions to be controlled externally, and wireless or RJ45 socket
Ethernet network connection options are also provided. Cable
connectors and connections are described and illustrated in
Section 6 of this manual
UXA4403 ampliers incorporate a front panel mounted power
button. Press the button once to switch the amplier on or o.
Amplier power management behaviour can be congured via
the Control web app Settings Menu described in Section 5 of this
manual.
2.2 Network Features
UXA4403 ampliers are TCP/IP network connected devices that
require a wired or wireless network connection to access their
conguration menus. The conguration menus are accessed via
the Control Web App interface and cover Input, Zone, Output and
General Settings functions. The Control web app conguration
menus are described in Section 5 of this manual.
2.3 Firmware
This manual describes the features, functions and user interface of
UXA4403 ampliers running Firmware Version 1.2.0.
It is strongly recommended that the rmware version installed in
the amplier in use is checked initially, and regularly thereafter.
If updated rmware is available, the amplier should be
updated as a priority.
The rmware installed in the amplier can be identied and
updated by selecting the Device option in the Control web app
Settings Menu.
3. Carton Contents
UXA4403 ampliers are shipped in a cardboard carton containing
the amplier unit, a mains cable appropriate for the sales territory,
an accessory pack, and a document pack. The full contents is listed
below.
• Amplier unit
• Rack mount ears (tted)
• Mains power cable
• Input connector x 2
• GPIO socket connector
• Output connector x 1 or 2
• Adhesive rubber feet x 4
• Document pack

Installation
Diagram 1a
[AMP NAME] amplier dimensions.
(Shaded area denes ventilation space.)
440 mm
17.3 in
332 mm
13.1 in
4. Installation
4.1 Amplier Location
UXA4403 ampliers are shipped with rack“ears” attached and
are primarily intended for standard (19 inch)equipment rack
installation. If not to be installed in an equipment rack, UXA4403
ampliers can be placed free-standing on a at surface. Adhesive
rubber feet are supplied for this purpose.
It is important that any installation provides space for airow
through the ventilation apertures at the front and rear of the
amplier. This is illustrated in Diagram 1a.
88 mm
3.5 in

Conguration
5. Conguration
Before making input, output and GPIO connections,
an initial UXA4403 amplier conguration should
be established. It is particularly important that the
amplier output format is congured appropriately for
the speakers that are to be connected.
Conguration requires that UXA4403 ampliers are
connected to mains power and network services. These
connections are described in the following two sections.
5.1 Mains Power Connection
UXA4403 ampliers incorporate a power factor corrected power
supply and can be used with mains input voltage from 100V AC to
240V AC, 50/60Hz. Use the mains cable supplied with the amplier
and connect it to a switched mains supply.
UXA4403ampliers have no mains power switch and are
operational as soon as mains power is connected.
5.2 Network Services
UXA4403 ampliers are congured via a web page
interface. Before the conguration menus can be
accessed, UXA4403 ampliers must be connected to the
same TCP/IP network as the computer or mobile device
that is to be used for conguration access.
5.2.1 Wired (Ethernet) Network Connection
To connect a UXA4403 amplier to a TCP/IP network using a wired
connection (Ethernet) follow the steps below.
1. Use an Ethernet cable to connect the UXA4403 amplier rear
panel Network Control socket to a free socket on a network router
or switch, or directly to an Ethernet equipped laptop or desktop
computer.
2. Connect the UXA4403 amplier to mains power using the
supplied mains cable. Wait for the front panel Network indicator
to illuminate green to indicate that the amplier has network
connectivity.
3. The UXA4403 amplier default LAN IP address is 192.168.64.100.
Congure the laptop or desktop computer for a xed IP address
in the same IP range; eg. 192.168.64.10, with Subnet mask of
255.255.255.0 (or prex 24) and set the Gateway to 192.168.64.1.
4. Open a laptop or desktop web browser and enter the address
http://192.168.64.100. The UXA4403 Control Web App interface
will open to enable amplier conguration as required.
Note: UXA4403 ampliers can be congured to use DHCP for network
connection if required. However, if a UXA4403 amplier using DHCP is
power cycled, it is possible that the TCP/IP network router will assign
it a dierent IP address, leaving its conguration page inaccessible via
the previous address. If this occurs, a network scanning app can be
used to identify the new IP address. DHCP and Fixed IP address option
settings can be found in the Settings Tab menu described in Section
5.3.
5.2.2 Wireless (WiFi) Network Connection
To connect a UXA4403 amplier to a TCP/IP network using a
wireless connection (WiFi) follow the steps below.
1. With the UXA4403 amplier connected to mains power, wait for
the front panel WiFi indicator to illuminate green.
2. Use a mobile, laptop or desktop device to search for available
WiFi networks. Connect to, UXA4403 (product serial number)’
using the password, ‘password’. The amplier serial number can
be found on its rear panel.
3. Open a computer or mobile device web browser and enter the
IP address: 192.168.4.1. The UXA4403 Control Web App interface
will open to enable amplier conguration as required.
4. Select the Web App Settings Tab followed by WiFi > WiFi Mode
> Client to congure the amplier to connect to the required WiFI
network. The WiFi network name and password will be required.
It is strongly recommended that the UXA4403 amplier
Access Point WiFi password is changed following initial
wireless connection.

Conguration
5.3.1 Input Tab
The Input Tab provides naming, mono/stereo selection,
sensitivity, and gain trim for each amplier input channel. An
internal pink noise source, provided for system testing and set up,
can also enabled or disabled, and adjusted for gain via the Input
Tab. Diagram 4b illustrates the Input Tab.
Diagram 4a
Conguration Dashboard display
(two output amplier model shown)
Diagram 4b
Input Tab display
(two inputs only shown)
Note: When adjusting input gain, the input level display should
remain green. If it displays red, the input gain should be reduced.
5.3 Conguration Menus
Opening a web browser that is network connected to a UXA4403
amplier initially displays the UXA4403 Control Web App
Dashboard illustrated in Diagram 4a. The Dashboard is the ‘home’
page from which all other conguration options can be accessed.
The Dashboard displays the amplier status, output zones and the
conguration menu tabs. It also enables immediate access to zone
volume control The functions available under each conguration
menu tab are described in the following sections.

Conguration
5.3.2 Zone Tab
The Zone Tab enables installation zones to be dened and
named, and provides access to further sub-menus. Zones might
be bar or restaurant areas for example, or dierent rooms in
a home. For all Zone Tab menus, the installation zone under
conguration is selected by highlighting one of the zone
identiers (A, B, C or D) at the top of the page. Diagram 4c
illustrates the Zone Tab.
• The Source menu option enables inputs to be assigned to
zones.
• The GPIO Volume Control (Diagram 4d) option enables
external volume control to be applied to individual zones. The
GPIO conguration menu can be found under the Settings
Tab.
• The Compressor (Diagram 4e) option enables default or
custom signal compression to be applied to individual
installation zones.
Note:: Compression can be useful to reduce the volume dierence
between loud and quiet audio material. The lower the compression
threshold is set, the more the dierence between loud and soft will be
reduced. The overall zone volume may need to be increased
Diagram 4c
Zone Tab display
Diagram 4e
Zone Tab display
Diagram 4d
Zone Tab display

Conguration
5.3.3 Output Tab
The Output Tab enables amplier outputs to be named and
provides access to further sub-menus. For all Output Tab
menus, the amplier output under conguration is selected by
highlighting one of the output identiers (1, 2, 3 or 4) at the top
of the display. The Output Tab also enables Speaker Preset
congurations to be created, exported, imported or cleared.
Note:: The number of individual outputs available for conguration
will depend on the UXA4403 amplier model and the input, zone and
output mode conguration.
• The Routing menu (Diagram 4f) enables zones to be assigned
to amplier outputs.
Note: Routing for zones specied as stereo will automatically oer
three output options: left channel, right channel or summed mono.
The summed mono signal can potentially be used to drive a mono
subwoofer.
• The Delay menu (Diagram 4g) enables delay to be applied to
individual amplier outputs.
• The Equalizer menu (Diagram 4h) enables parametric
equalization to be applied to individual amplier outputs.
Equalizer settings congured for one amplier output can be
copied and applied to other outputs.
Diagram 4f
Diagram 4g
Diagram 4h