Axium AX-1250 Instruction Manual

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PREFACE - Contents
Contents …………………………………………………………………………………………. 3
PREFACE
Important Information …………………………………………………………………. 4
Graphical Symbols in this Guide……………………………………………. 4
Graphical Symbols on the Device………………………………………….. 4
Safety Instructions………………………………………..……………………………. 5
Precautions....………………………………………..………………………………… 6
Declaration of Conformity....………………………..………………………………… 7
Supplied Accessories………………………….………………………………….…… 8
Warranty………………………………………………………………………………… 8
SECTION 1 – Quick Install Guide……………….…………………………………………….. 9
SECTION 2 – Introduction
Features ………………………………………………………………………………… 10
Front Panel …………………………………………………………………………….. 12
Rear Panel ……………………………………………………………………………... 13
SECTION 3 – Installation
Typical Configuration………………………………………………………………….. 14
Multiple Amplifier Stack……………………………………………………………….. 16
Controllers………………………………………………………………………………. 17
SECTION 4 – Menu Navigation
User……………………………………………………………………………………… 18
System…………………………………………………………………………………… 22
SECTION 5 – Web Application
Monitor and Control………………………………………………………………..…… 26
Configuration……………………………………………………………………………. 28
SECTION 6 – Specifications….…………………………………………………………………. 31
Acknowledgements………………………………………………………………………………. 31

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PREFACE - Important Information
Graphical Symbols in this Guide
Warning and Important paragraphs draw your attention to important safe practices and
additional information which may help you avoid injury, death, or loss of material or time.
WARNING! This indicates a potentially hazardous situation that, if not avoided,
may result in death or serious injury. DO NOT IGNORE A WARNING!
IMPORTANT! This indicates information that will help you avoid damage to
your equipment, loss of materials, or loss of time.
PAY ATTENTION TO THESE IMPORTANT STATEMENTS!
Graphical Symbols on the Device
The following have been placed on the device:
This symbol alerts you to the presence of uninsulated
dangerous voltage within the products enclosure that may
be of sufficient magnitude to constitute a risk of electric shock.
Do not open the product’s case.
This symbol informs you that important operating and
maintenance instructions are included in the literature
accompanying this product.

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PREFACE -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. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including other amplifiers) that produce heat.
9. Use the apparatus only in Moderate climates.(not in tropical climates)
10. 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 grounding prong are provided for your safety. If the
provided plug does not fit onto your outlet, consult an electrician for replacement of the obsolete
outlet.
11. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
12. Only use attachments / accessories specified by the manufacturer.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. If you install the apparatus in a built-in installation, such as a bookcase or rack, ensure that there
is adequate ventilation. Leave 20cm (8”) of free space at the top and sides and 10cm (4”) at the
rear. The rear edge of the shelf or board above the apparatus shall be set 10cm (4”) away from
the rear panel or wall, creating a flue like gap for warm air to escape. Good airflow is necessary
to help ensure proper operation. Not only should you provide enough free space around the unit,
but also ensure that air can flow freely and escape from the amplifier surroundings. Failure to do
so may cause thermal shutdown of the unit, and reduced life expectancy.
15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has
been damaged in any way, such as:
•When the power supply cord or plug is damaged.
•If liquid has been spilled, or objects have fallen into the apparatus.
•If the apparatus has been exposed to rain or water.
•If the apparatus has been dropped or damaged in any way.
•If the apparatus does not operate normally by following the instructions. Adjust only those
controls that are covered by the operating instructions.
•When the apparatus exhibits distinct change in performance this indicates a need for a
service.
WARNING! Do not expose the apparatus to dripping or splashing.
Do not place objects filled with liquids near the apparatus.
WARNING! To reduce the risk of fire or electric shock,
Do not expose this apparatus to rain or moisture.
WARNING! Equipment must be connected to a Mains socket outlet with a protective earthing
connection.
WARNING! Never push objects of any kind into the apparatus through openings as they may
touch dangerous voltage points or short-out parts that could result in a fire or electric shock.
IMPORTANT! Ensure adequate ventilation. Do not install in a cabinet that is smaller than
60cm (24”) wide x 45cm (18”) deep x 20cm (8”) high. If you do the device may overheat.

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PREFACE - Precautions
1. AC Fuse - The AC fuse inside the unit is not user-serviceable. If you cannot turn on the unit, contact the
dealer from whom you purchased this unit.
2. Care - Occasionally you should dust the unit all over with a soft cloth. For stubborn stains, use a soft
cloth dampened with a weak solution of mild detergent and water. Dry the unit immediately afterwards
with a clean cloth. Don’t use abrasive cloths, thinners, alcohol, or other chemical solvents, because they
may damage the finish or remove the panel lettering.
3. Power
WARNING
BEFORE PLUGGING IN THE UNIT FOR THE FIRST TIME, READ THE FOLLOWING SECTION
CAREFULLY.
AC outlet voltages vary from country to country. Make sure that the voltage in your area meets the
voltage requirements printed on the unit’s rear panel. e.g. ~ 110V / 240V, 50/60HZ
The power cord is used to disconnect this unit from the AC power source. Make sure that the plug is
readily operable (easily accessible) at all times.
If you do not intend to use the unit for an extended period, remove the power cord from the AC outlet.
4. Earth – The unit is defined as Class1 in EN60065 (low voltage directive) and MUST BE EARTHED.
Connect only to a mains socket outlet with protective earth, and only use the power cord supplied.
Finland:
“Laite on Liitettävä suojamaadoituskoskettimilly varustettun pistorasiaan”
Norway:
“Apparatet må tilkoples jordet stikkontakt”
Sweden:
˶Apparaten skall anslutas till jordat uttag”
5. Never Touch This Unit With Wet Hands – Never handle this unit or its power cord while your hands
are wet or damp. If water or any other liquid gets inside this unit, have it checked by your Axium dealer.
6. Handling Notes
•If you need to transport this unit, use the original packaging.
•Do not leave rubber or plastic items on this unit for a long time; they may leave marks on the case.
•This unit’s top and rear panels may get warm after prolonged use. This is normal.
7. Speaker Shorts
Under no circumstances should the speaker output terminals of the unit be short circuited, grounded or
connected to another output.
8. Direct Sun light - Avoid installing the amplifier in positions where the front panel is exposed to direct
sunlight – may cause control to become sluggish.
9. Controller Connection - Never connect more than eight Axium controllers. The supply is internally
fused (self resetting) and may open circuit. Never connect the unit’s 12VDC terminal (‘Bus Run’ port) to
an external power supply.

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PREFACE – Declaration of Conformity
We declare under our sole responsibility that this product, to which this declaration relates, is in conformity
with the following standards:
EN60065, EN55013, EN55020, EN61000-3-2 and EN61000-3-3.
Following the provisions of Low Voltage Directive 2006/95/EC and EMC Directive 2004/108/EC, the EC
regulation 1275/2008 and its frame work Directive 2009/125/EC for Energy-related Products (ErP).
TUV Certification
This product has been certified and conforms to UL60065 and certified to CAN/SSA, IEC 60065.
For North American Models
FCC interference statement
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.
IMPORTANT!
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.
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 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.
For Canadian Models
NOTE: THIS CLASS B DIGITAL APPARATUS COMPLIES WITH CANADIAN ICES-003
For models having a power cord with a polarized plug:
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY
INSERT.
Modèle pour les Candadien
REMARGUE: CET APPAPEIL NUMĖRIQUE DE LA CLASSE B EST CONFORME À LA NORME NMB-003
DU CANADA.
Sur les modèles don’t la fiche est polarisée:
ATTENTION: POUR ĖVITTER LES CHOCS ĖLECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE
LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQƯAU FOND.
RECYCLING:
This product’s packaging materials are recyclable and can be reused. Please dispose of
any materials in accordance with the local recycling regulations.
When discarding the unit, comply with local rules or regulations.
Batteries should never be thrown away or incinerated but disposed of in accordance with
the local regulations concerning battery disposal.
This product and the supplied accessories constitute the applicable product according to
the WEEE directive.

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PREFACE - Supplied Accessories
Locate the following accessories:
AS3112 Australasian Plug to IEC60320 C13 Socket ………………………...
VDE CEE 7/7 European Plug Schuko to IEC60320 C13 socket…………….
Standard US Plug to IEC60320 C13 socket………………………...
Rack Ears…………………………………………………………….……………………
PREFACE - Warranty
Audio Engineering Ltd warrants its products to be free of material and construction defects.
The warranty is for One Year from the date of purchase by the original consumer.
Any products returned to either Audio Engineering Ltd or the Axium Distributor and found to be defective
within the warranty period will be repaired or replaced at no charge. The warranty does not cover costs
relating to installation or removal of the product or consequential damages.

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SECTION 1 - Quick Install Guide
Thank you for purchasing an Axium AX-1250 Multi-Zone Amplifier.
Please read this manual thoroughly before making connections and plugging in the unit.
Following the instructions in this manual will enable you to obtain optimum performance and listening
enjoyment from your new Multi-Zone Amplifier. Please retain this manual for future reference.
Unpacking / Setup
•Check for damage:
Immediately upon receiving the new AX·1250 Multi-Zone amplifier, inspect the carton for evidence of
mishandling during shipment. Then carefully unpack the unit and inspect for damage. Please save the
shipping carton and all inner package materials in the event that the AX·1250 needs to be shipped for
service or moved to a new location.
IMPORTANT: If the AX·1250 Multi-Zone amplifier has been damaged during shipping, please
contact the Axium supplier immediately.
•Verify that all the accessories have been included, see PREFACE: Supplied accessories.
•Read the entire Instruction Manual.
Installation
•Connect Zone outputs 1 – 6 to speakers, using high quality speaker audio cables, e.g. minimum
specification is 16 AWG (1.3mm²) Twin or Quad Audio cable.
oAll Speaker cabling should be home runs, avoid joining or crimping wires.
oSpeaker cabling should be kept at least 300mm (12”) away from high voltage house wiring.
oSpeaker wiring can NOT be combined. The Zone outputs are ‘Bridge” configuration where
there are no common ground connections; i.e. The Left Zone output positive and negative
terminals are connected to the Left speaker’s Positive and negative terminals respectively. The
Right Zone output positive and negative terminals are connected to the Right speaker’s positive
and negative terminals respectively.
oNot suitable for use with a stereo speaker – single speaker with two voice coils – where the
voice coils are internally connected.
oNot suitable for use with transformer volume controls.
•Connect Sources 1 – 12 to Source equipment, using good quality RCA cables for the Analog L/R
connections, and shielded 75ΩRCA cables for the Coax Digital Audio inputs.
oBoth Analog & Digital Audio connections may be made to input Sources 1 – 8. The Digital Audio
source is the default selection if a signal is present.
oEither a Digital Audio Coax or Optical connection can be made to input Sources 9 – 12.
oDigital Audio Coax and Optical signals must be PCM.
•Connect AX·1250 to local network via the Ethernet port “MAIN IN”
•Connect Power cord to unit and then plug into an AC outlet to apply power.
•Use the AX·1250 intuitive front panel LCD GUI and Touch Panel to select Zone, and control the amplifier
Standby, Source and Volume.

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SECTION 2 – Introduction; Features
Multiple Analog & Digital Audio Sources
Sources 1 – 8 are either Analog Stereo, or Coax
Digital Audio (PCM). Digital Coax has priority if
both are connected.
The Analog Sources have gain adjustment: up to
+10dB in 2dB steps.
Sources 9 - 12 are either Coax or Optical Digital
Audio (PCM). Only one connection is allowable to
each source.
Sources 1 -12 have programmable delay: up to
600ms - 5ms steps.
UPnP enabled Media Source.
Source 13 (Media 1) has UPNP support also
known as DLNA, providing ‘Play from my Device”
functionality. The amplifier becomes a slave
device – or Media Renderer – and is controlled by
a UPnP controller, which is typically the Axium
App running on an iPad or Android Tablet, but can
be any generic UPnP player.
Regarding generic UPnP player:
•An AX · 1250 has sub-devices implemented for
each zone. The zone where music is to be
played is selected from the Media Renderer
list in the UPnP player.
•Starting playback in any given zone implicitly
selects the media source in that zone. If the
media source is already in use playing to
another zone then the UPnP player will take
over control.
Source 13 (Media 1) may also stream from
Internet Radio services like Tune-In or Pandora,
and from a locally connected network share
including a NAS. Decoding of mp3, wav, m4a,
ogg, mp4, aac or flac music streams are
supported.
Remote Sources.
Remote Sources (Lossless Audio via Ethernet):
Multiple remote sources may be assigned,
originating from a connected AX·1250, Mini4 or
Axium Media player.
Source Buffering and PCM streaming
Source 1 -12 have Digital Coax outputs for
connection to a local amplifier.
The amplifiers Zones may be streamed over
Ethernet using Axium’s proprietary Low Latency
Lossless Audio Stratagem (LLLAS). The Audio
streams can then be accessed by connected
AX·1250 or Mini·4 multi-zone amplifiers.
Amplifier Zones
Six separate amplifiers independent yet integrated
control.
Each zone has controls for bass, treble, balance,
loudness, gain, mono and maximum volume
limiting – useful for protecting connected
speakers.
Amplifiers are rated 55 Watts into 8 ohm loads,
and 75 Watts into 4 ohm loads with < 1% THD.
Power On Volume
Each Zone may be set to a specific volume level
at Power ON.
Preamplifier Zones
Two separate preamplifiers with up to 3.5VRMS
output level (+14dB gain).
Each zone has controls for bass, treble, balance,
loudness, gain, mono and maximum volume
limiting. In addition each zone has a low pass filter
that when selected only passes low frequency
audio for driving Active Subwoofers.
When the low pass filter is selected the Tone and
loudness controls are defeated.
Thermal Control
There are two progressive levels of thermal
control:
•The amplifier volume is reduced 20dB.
•The amplifiers are shutdown until the
temperature reduces below the first level.
Care should be taken to ensure adequate
ventilation – see “Safety instructions” on page 4
Amplifier ON Status – “Amp-On”
Each zone has AMP-ON status: 12VDC OUT on
the rear panel connector: (1, 2, 3, 4, 5, 6, 7, 8).
The ‘AMP ON’ output’s are protected against
shorts.
96 Zones
There are 96 zones of possible control.
On an AX·1250 amplifier each zone must be
different, however in a multiple amplifier stack
same zone amplifiers are possible – they simply
mimic every parameter.

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SECTION 2 - Introduction; Features
Zone Linking
A zone may be programmed to link multiple
zones. Zone linking ties the source selection
together. It may also tie the volume, and standby.
This is useful for closely coupled audio areas
where it is advantageous to have different volume
control but the same source, or the same volume
with separate standby control. Zone linking is
setup either via the front panel user interface,
Web application or ADP program.
Web App / Ethernet, USB and IR control
The AX·1250 amplifier is controlled, monitored
and programmed via Ethernet or the rear panel
USB.
An AX·1250 amplifier may receive IR directly from
the front panel receiver or via the eight ‘Controller’
connections.
There are zone specific IR commands and also a
set of global IR commands.
The commands are: ON, OFF, Standby (toggling),
Mute, Volume Up, Volume Down, Source Selects,
On with Source Specific commands.
The Global commands also include PRESET1 –
PRESET 14, Alarm Enable, Alarm OFF, & 5
minute Sleep.
IR Emitter Ports
There are 10 Buffered IR emitter Ports.
Ports 1 – 8 have IR routing, and are intended to
control specific input source components. Two IR
ports 9 & 10 are the sum of all IR sources; these
control the ‘All’ zone source components.
Presets and Paging
There are 14 amplifier presets and two page
presets.
Presets 1 - 14 are momentary and cause the
amplifier to go to a predetermined setup, i.e.
standby, volume & source selection.
The presets may also be programmed with event
scheduling, and are used by the alarm clock.
The ‘Page Preset’ mode is for paging applications
and is invoked by a contact closure between the
0V and PG1 or PG2 terminals.
The contact closure must have an external power
source i.e. a 12 – 24V AC/DC powered door bell.
When the contact closure is released (power
sensed across PG – 0V terminals) the amplifier
zones return to their previous states.
PG1 is always assigned to the Page Preset.
PG2 may be assigned to any one of the 15
available Presets.
Door Bell
Up to 10 seconds of 44.1 KHz 16 Bit stereo
sounds may be generated as part of a page
preset.
Suitable ‘wav’ files are uploaded to the unit using
the ADP program.
Real Time Clock
The AX·1250 amplifier is equipped with a real time
clock, and must have internet access to set
synchronize the time with an internet time server.
The amplifier may be set up to function as an
Alarm clock, so that at 6.30am in the morning 5
days a week, the master bedroom zone could be
made to turn on, select tuner, and go to a specific
volume. Multiple Alarms are feasible (max of 14)
however the Alarm Enable & OFF commands act
upon all programmed Alarms.
The Clock automatically compensates for daylight
saving.
Power Failure Restoration
After an AC power outage the AX·1250 amplifier
restores its settings to the pre-interrupted state.
All internal settings are stored in non-volatile
memory.
Restore Defaults
The AX·1250 amplifier may be readily set to the
default settings.
Restoring Defaults clears all memory and resets
the zone allocations to zones 1 – 8.
Setup Lockout
Locks access to the System Setup and More
menus where installation critical adjustments can
be made.
Password = 1396
Firmware Upgradable
The AX·1250 amplifier may be updated with the
latest operational firmware by either Internet
download or by using rear panel USB and ADP
program.

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SECTION 2 - Introduction; Front Panel Guide
1 2 3 4
5 5
1 Front Panel
Solid Aluminium front Panel
2 Infra-Red Receiver
Receiver for front panel IR control – Used
only for amplifier control, not IR pass
through.
3 Power Indicator
The power indicator glows blue whenever
AC power is applied.
4 2.4” Colour LCD Touch Panel display
LCD Touch Panel display for menu
guided control and programming. The
display is dimmed to “Off” after 15
minutes of inactivity.
5 Chassis Feet
Set high enough to provide unrestricted
air-flow through the chassis for convection
cooling.

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SECTION 2 - Introduction; Rear Panel Guide
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15
1 AC Inlet
IEC socket.
2 Speaker Terminals
Plug in terminal clamp connectors accept 1.5mm²
speaker wires.
3 Coax Digital Input Terminals
Coax digital inputs.
4 Coax Digital Source Output Terminals
Coax digital outputs for expansion to further
amplifier zones.
5 USB for programming
USB mini B socket for programming and firmware
updates.
6 Bus Run Controller Interface
Legacy ‘BUS RUN’ port (4 way terminal block).
7 Ethernet Port – MAIN IN
MAIN IN is 10/100 Base T primary Ethernet port
for connection to the Home network Router or
switch.
8 Ethernet Port – EXT OUT
EXT OUT is 10/100 Base T secondary port for
connection to another AX·1250’s ‘MAIN IN’
Ethernet Port.
9 Zone Preamplifier Outputs
Zone 7 & Zone 8 analog audio L/R outputs.
10 Analog Input Terminals
Source S1 – S8 analog audio L/R inputs.
11 IR Emitter Ports
3.5mm mono jacks.
IR1 and IR8 are used to control specific source
equipment, where each IR port may be assigned
to a specific Controller(s).
IR9 & IR10 are used to control source equipment
common to all zones. These ports output the
combined IR1 – IR8 infra-red.
12 Optical Digital Inputs
Optical digital inputs.
13 Controller Interface
For connection to keypads and IR receivers.
8 controller interface ports - RJ45 sockets.
14 AMP ON Control
AMP-ON 1 - 8 output 12VDC when Zone is ON.
15 PRESETS – Door Bell
12 – 24V AC/DC powered doorbell trigger
terminals.

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SECTION 3 – Installation; Typical Configuration
Zone 1
Gym
AX-KPE
Zone 2
Study
Active Subwoofer AX-KPC
Zone 3
Lounge
TABLET
Speakers in other Zones - not shown
CD CHANGE
MEDIA SE VE
TUNE NETWORK WIFI ROUTER
INTERNET
BLU-RAY
FIG 1

15
SECTION 3 - Typical System Configuration
FIG 1 depicts a typical configuration where the AX·1250 amplifier is providing audio into six of the possible
eight listening zones. Only three of the Zones are depicted.
Each zone consists of a room with a pair of speakers and a suitable controller.
Each zone may be listening to any of the connected sources: Blu-ray, Tuner, Media server, CD changer etc.
Controllers
Each zone has a specific control requirement.
Choose controllers that best suit the application.
•Zone 1 – The Gym: Keypad with IR receiver
•Zone 2 – The Study: Keypad
•Zone 3 – The Lounge: Tablet
The Axium Keypad’s may be plugged into any of the
eight Controller ports.
Source control IR emitters are plugged into the IR
Ports. There are ten IR ports: IR1 - IR8, and IR9 &
IR10.
IR 1 – RI8 route source specific IR signals from
connected controllers, while IR9 & IR10 output the
common IR or the sum of all received IR signals.
These Ports may be used for source equipment that
is common to all zones.
When controlling the AX·1250 using an iPad or
Android tablet, the AX·1250 must be connected to a
WIFI enabled Ethernet router and the Web Tablet
browser must be directed to the AX·1250’s IP
Address. The AX·1250’s WEB application also
provides source control functionality.
The AX·1250 can store and regenerate source
equipment IR commands, and be directed to output
the IR commands to a specific IR output port as
required. This advanced feature is programmed
using the Axium Design Portal program (ADP)
Speakers
Speakers in each zone are connected to the
amplifier by “Home Run” speaker cables.
Source Equipment
The AX·1250 amplifier has eight stereo RCA audio
inputs for connecting to source equipment. These
input channels also feature Coax Digital inputs.
If a signal is present on the Digital input it takes
precedence over the Analog input.
There are four additional Digital only input channels
featuring both coax and Optical inputs.
A zone may select from any of the connected
sources.
Someone in the Lounge may be listening to the
Tuner while another in the Study may be listening to
music from the media server.
All eight zones may select the same source, in such
circumstances there is a possibility that all eight
zones may be trying to control that source – not
always desirable – so a system should be well
planned and where appropriate additional source
equipment installed.
Preamplifier Zone Outputs
The preamplifier output zones are completely
independent of the Digital amplifier zones. These
can optionally be used for locations where a high or
lower power amplifier / speaker would be required.
A preamplifier Zone may be Zone linked to one of
the Digital amplifier zones and provide line level
outputs to a subwoofer. This is what is shown in the
Study, where the preamplifier zone 7 provides the
active subwoofers line level. In this case Zone 7
must be Zone Linked to Zone 2 and Zone linking
options for Link Volume and Link Standby have
been selected. The zone 7 EQ must have a low
pass filter frequency selected.

16
SECTION 3 - Multiple Amplifier Stacks
To Next AX·1250 Multi-Zone Amplifier
CD CHANGER
MEDIA SERVER NETWORK WIFI ROUTER
INTERNET
TUNER
BLU-RAY
FIG 2
In large installations where multiple AX·1250 amplifiers are required Ethernet conveys amplifier control, and
link to other Media sources if connected to the Home network Router or Switch.
FIG 2 shows a stack of AX·1250’s with Source connections to first amplifier where they are converted to
Digital audio, buffered and sent to the next amplifier in the stack. Use good quality Coax Digital Shielded
RCA cables for the interconnection, cables should be <3m (4ft).
The maximum recommended expansion is eight units.
The Ethernet can be connected as shown. However if an Ethernet router or switch is local and has enough
ports then connect each AX·1250 to the router / switch directly.

17
SECTION 3 - Controller Wiring
The AX·1250 is packed with control options:
oUSB:
Intended for initial installation
Programming or firmware update.
Not intended for permanent connection
to a PC or other control system.
oETHERNET: 100BaseT.
When connecting to a network router or
switch – use the MAIN IN Port.
The EXT OUT Port may be used for
conveying Ethernet to other local
amplifiers or controllers.
oCONTROLLERS:
Conveys +12VDC, IR and Data between
the AX·1250 and Axium keypad controllers,
connected using CAT5 cables.
The Ports may be setup to be Zone
assigned i.e. A Controller connected to
Port 1 controls only Zone 1 etc.
oBUS RUN:
(Legacy) Port conveys +12VDC, IR & Data
to remotely connected IR controllers.
oAMPON:
Zone ON is +12VDC 100mA trigger output.
oPRESETS:
P1 and P2 Inputs are active low (default). FIG 3
However this can be swapped in the settings.
Default settings: Use a ‘Push to Break’ switch.
Swapped settings: Use a ‘Push to make’ switch.
The BUS RUN 0V and 12V can be connected
as shown in FIG 3.

18
SECTION 4 - Menu Navigation: User
Front Panel User Interface:
The AX·1250 amplifier has a 2.4” Touch Panel LCD colour display which is used for control and accessing
status of all amplifier functions.
After 2 minutes of inactivity the LCD dims to 50% brightness, after a further 15 minutes it dims OFF.
A Touch on the screen will restore the LCD to full brightness, enabling touch control.
Home Page
The home page provides access to the
Amplifier zones: Zone1 - Zone 8.
Selecting a Zone opens its control page.
The Blue indicators in the buttons provide zone
standby status.
The first six zones are the amplifier outputs, the
last two zones are the preamplifier outputs.
Zone Control Page
At the top of the control page the Zone name is
displayed.
The ‘Zones’ button is the Home Page return.
The Control page provides status & control for
the selected Zones:
•Standby
•Volume Slider
•Volume Up / Down with Digit readout
•Source Selects S1 – S4
•Mute
The selected source has an illuminated blue
indicator.
The Volume slider changes colour as the
volume increases, i.e. Green –Yellow – Red.
Selecting the ‘More’ button will display the next
source pages: S5 – S8, S9 – S12 & then the
conditional source pages will be displayed – if
connected – otherwise the source selection
loops back to the Start, i.e. S1 – S4.
Conditional Sources are:
Media Player: Ethernet connection to server
Internet Radio: Tune in – Internet connection
Streamed sources linked to other networked
Axium amplifiers.

19
SECTION 4 - Menu Navigation: User
More Functions Page
When the “More” button is pressed and held for
>1second a More functions Page opens.
There are four Zone specific functions that
when selected navigate to setup pages:
•EQ
•Levels
•Zones
•Delay
There is also a System function which is not
zone specific. The System page is covered
later. Note System functions may be accessed
via any of the Zones ‘More functions’ pages.
The Back arrow button returns to the Zone
Control Page.
EQ Setup Page
The EQ setup page provides status & control
for the selected Zones:
•Bass ± 12dB using Slider or Up/Down
button
•Treble ±12dB using slider or Up/Down
Button
•Loudness Control – toggle.
The Back arrow button returns to the More
Functions Page.
The Preamplifier zones have an additional
‘Low pass filter’ button on the EQ setup page.
When selected a ‘Low Pass Filter’ page opens.
There are four low pass filter options:
•80Hz
•120Hz
•180Hz
•240Hz.
Select the setting most appropriate for the
connected Sub woofer.
When a low pass filter is selected the Tone
and loudness controls are defeated.
The Back arrow button returns to the More
Functions Page.

20
SECTION 4 - Menu Navigation: User
Levels Setup Page
The Levels setup page provides status &
control for the selected zones:
•Maximum Volume Limiting – can be
reduced over the range from 100 to the
minimum of 2 using the slider or
Up/Down buttons.
•Gain – can be adjusted ±12dB in 2dB
steps using the slider or Up/Down
buttons
•Mono – if selected will combine Left
and Right signals.
The ‘More’ button navigates to a further Levels
setup page
The Back arrow button returns to the More
Functions Page.
The Levels setup page 2 provides status &
control for the selected zones:
•Balance - ±20dB of adjustment in 2 dB
steps can be made using the slider or
Left/Right buttons.
•Power On Volume – Volume level can
be adjusted over the full Volume range
using the Slider of Up/Down buttons.
The function is enabled when the
‘Enable’ button is selected.
The Back arrow button returns to the Levels
Setup Page.
Delay Setup Page
The Delay setup page provides a single slider
and Up/Down control for adjusting the Zones
Audio Delay time. It may be adjusted over the
range from 0 – 600ms in 5ms steps
The S1 – S12 buttons may be selected to be
included or de-selected to be excluded from the
delay group.
The Back arrow button returns to the More
Functions Page.