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Operation

7. Operation

Once all connections have been made and configuration 
options selected, UXA4403 amplifiers are ready for 
use. If an input signal above -60dB is present on any 

input, the front panel Input and  Standby indicators will 

illuminate green to indicate normal amplifier operation. 
Audio will be heard from any connected speakers.

Note: UXA4403amplifiers will not switch on from Standby Mode 
unless an input signal is present, a network ‘ON’ command is 
received, or an external standby switch (or 12V trigger) is operated. 
Standby behaviour can be  configured via the Power Management 
menu of the Settings Tab.

Amplifier outputs will mute if no input signal is present for 5 
minutes, and the amplifier will switch automatically to Standby 
Mode if no signal is present on any input for more than 15 
minutes. Alternative standby and mute delay times can selected 

via the 

Settings Tab

. Amplifier cooling fan speed is temperature 

controlled. The fan will switch off when the amplifier enters 
standby mode.

7.1 Front Panel Indicators

UXA4403 amplifier front panel indicators illuminate to indicate 
the following operational states:

Status:

 

Off – Mains power disconnected.

 

 

Green – Amplifier operational.

 

 

Pulse Green – Standby Mode.

 

 

Amber – GPIO triggered Standby Mode

Input:

 

 Off – No input signal present.

 

Green – Signal present on one or more inputs.

 

Amber – Signal limiting/clipping on one or more 
inputs.

Output:

   Off – No output signal present.

 

Green – Signal present on one or more outputs.

 

Amber – Signal limiting/clipping on one or more 
outputs.

 

Red – One or more channel pair is in 

 

overload/protection mode.

Network: 

Off – No Ethernet network detected.

 

 

Green – Ethernet network detected.

WiFi: 

Off – WiFi disabled.

 

 

Green – WiFi enabled.

 

7.2 Automatic Power Sharing

UXA4403 amplifiers incorporate a power sharing feature 
that automatically shares the total power available from the 
amplifier’s internal power supply across each pair of output 
channels. If one channel temporarily demands more than the 
amplifier’s continuous power rating while other channel is 
demanding less, the excess power available from the internal 
power supply is automatically made available to the over-
power channel. Power sharing optimises the amplifier’s ability 
to deliver maximum power into dynamic loudspeaker loads 
when playing music programme material.

7.3 Default Reset

UXA4403 amplifiers can be returned to their default settings 
via either the Control Web App Settings Tab or the hardware 
reset pinhole button. The reset pinhole button is located on the 
underside panel of the amplifier. 

To reset the amplifier using the pinhole button, follow the steps 
below:

 

• Disconnect the amplifier from mains power.

 

•  Use an appropriate tool to press and hold the reset 

pinhole button while simultaneously reconnecting mains 
power. 

 

•  Continue to hold the reset pinhole button for a few 

seconds as the amplifier restarts.

The amplifier will restart with all settings at their default state. 
Any previously configured settings will be deleted.

Содержание UXA4403

Страница 1: ...UXA4403 User Manual...

Страница 2: ...vel of performance and in good operating condition Any damage to or unsatisfactory performance from these amplifiers caused by inadequate or failed input or output ancillaries may invalidate support w...

Страница 3: ...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 specifi...

Страница 4: ...figuration 6 Connections 7 Operation 8 Specifications 2 Amplifier Overview UXA4403 amplifiers are a full rack width 2U format power amplifiers that can drive both conventional low impedance Lo Z 4 to...

Страница 5: ...configuration menus are accessed via the Control Web App interface and cover Input Zone Output and General Settings functions The Control web app configuration menus are described in Section 5 of this...

Страница 6: ...are primarily intended for standard 19 inch equipment rack installation If not to be installed in an equipment rack UXA4403 amplifiers can be placed free standing on a flat surface Adhesive rubber fe...

Страница 7: ...LAN IP address is 192 168 64 100 Configure the laptop or desktop computer for a fixed IP address in the same IP range eg 192 168 64 10 with Subnet mask of 255 255 255 0 or prefix 24 and set the Gatewa...

Страница 8: ...wn Note When adjusting input gain the input level display should remain green If it displays red the input gain should be reduced 5 3 Configuration Menus Opening a web browser that is network connecte...

Страница 9: ...signed to zones The GPIO Volume Control Diagram 4d option enables external volume control to be applied to individual zones The GPIO configuration menu can be found under the Settings Tab The Compress...

Страница 10: ...403 amplifier model and the input zone and output mode configuration The Routing menu Diagram 4f enables zones to be assigned to amplifier outputs Note Routing for zones specified as stereo will autom...

Страница 11: ...ion and management is described in Section 5 3 5 2 Select the appropriate zcp format speaker preset data file to import from either a Library or a computer folder The preset data will be applied to th...

Страница 12: ...well as adjusting global gain Diagram 4l Diagram 4l Preset Crossover Gain The Speaker EQ in the preset menu allows for configuring customized parametric EQ on the output level Diagram 4m Diagram 4m Pr...

Страница 13: ...audible increase the frequency setting one step at a time until the distortion is no longer audible Driver Alignment in the preset menu will allow for delay to be set between driver passbands Diagram...

Страница 14: ...nder the Device menu The Backup Restore menu enables amplifier configuration data to be downloaded to an external archive and enables previously saved configuration files to be uploaded and adopted by...

Страница 15: ...m Gain Trim Gain Trim Input Sensitivity Input Gain Input Gain Input Selection Input Setup Zone Setup Routing Output Setup Output 1 Output 2 Output 3 Output 4 Zone Adjustment Parameters Speaker Preset...

Страница 16: ...he zone to be configured The number of zones available and their channel format stereo or mono will depend on the amplifier model input setup and output mode Lo Z or Hi Z For example a two output ampl...

Страница 17: ...n 8 has a low output impedance and is able to supply a maximum current of 10mA Note GPIO Pin 1 and Pin 3 both offer ground connections Pin 1 is connected directly to the amplifier chassis Pin 3 is con...

Страница 18: ...Note Two output amplifier model connection sockets differ only in the deletion of channel 3 and channel 4 output connectors Digital Inputs UXA4403 amplifier S PDIF stereo digital audio input connectio...

Страница 19: ...ifiers to a TCP IP network is described in Section 5 of this manual Cable Gauge Table Lo Z installations 0 5dB attenuation 4 8 loads Cable Gauge Table 70V Hi Z installations 1 0dB attenuation 20 speak...

Страница 20: ...5 mm Connections Diagram 5b Balanced analog input cable connections Diagram 5c Output cable connections Low Z Mode Hi Z BTL Modes 5 mm 5 mm...

Страница 21: ...s is in addition to the CLASS 2 WIRING text intended to alert users to the risk of hazardous voltages Output connectors that could pose a risk are marked with the exclamation point Do not touch the ou...

Страница 22: ...Output Off No output signal present Green Signal present on one or more outputs Amber Signal limiting clipping on one or more outputs Red One or more channel pair is in overload protection mode Networ...

Страница 23: ...vel of performance and in good operating condition Any damage to or unsatisfactory performance from these amplifiers caused by inadequate or failed input or output ancillaries may invalidate support w...

Страница 24: ...2023 Eastern Acoustic Works All rights reserved Products are not drawn to scale All terms conditions and specifications subject to change without notice Eastern Acoustic Works One Main Street Whitinsv...

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