Monitor Audio IA125-4 Manual de usuario
Product Manual
Installation Amplifiers 2G
2 3
Thank you for purchasing this Monitor Audio amplier.
This product has been designed to provide congurable, consistent and reliable high
performance audio power amplication for residential, commercial and entertainment
applications.
In this product manual, you’ll nd information about setting up and maintaining
this Installation Amplier.
If you need any further assistance, please contact our technical team
at monitoraudio.com/support
Welcome to Installation Ampliers 2G
Register your amplier using the QR code
or visit monitoraudio.com/registration
Register your Installation Amplier
Contents
Connections overview 4
Connecting to network control 6
Configurations menus 8
Setup and signal routing 16
GPIO setup and connection 22
Input, output and GPIO cable connections 24
Installing 26
Operation 28
Front LED colour matrix 29
Warranty 30
Specifications 31
IA60-4
IA125-4 IA750-2
IA750-4
Amplier Unit
Amplier Unit
Rack Mount Brackets
x2
Input / Output
Connectors Mains Cable Adhesive FeetGPIO Socket
Connector
4 5
Connections overview
The Installation Amplier’s signal input and output connections are accomplished via
RCA Phono and Euroblock style connectors. A GPIO (General Purpose In/Out) Euroblock
connector enables some amplier functions to be controlled, and wireless or RJ45 socket
Ethernet network connection options are also provided.
Installation Ampliers have no mains power switch and are operational as soon as mains
power is connected via the IEC 60320 mains socket.
Prior to making any connections to the amplier we strongly recommend rst
connecting the amplier to the network and conguring the amplier for its intended
use, refer to page 6 for network connectivity and page 12 and 18 for output (Lo-Z or Hi-Z)
conguration.
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7 98 10 11 12 13 14
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1Power Button (IA750-4 only)
2Status LED
3Input LED
4Output LED
5Network LED
6Wi-Fi LED
7RJ45 Connection
8Wi-Fi Attenna
9GPIO Wall Contol Input (Selectable in Network
Contol)
10 Digital Audio Input/Output
11 Unbalanced RCA Inputs
12 Balanced Inputs, Mic Input on Channel 1 & 2
(sensitivity selectable in Network Control)
13 Speaker Outputs
14 IEC 60320 mains Input
Front Panel
Back Panel
Mains Power Connection
Installation Ampliers 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 amplier and connect it to a switched mains supply.
Lo-Z and Hi-Z
Lo-Z refers to low impedance speaker connections (between 4-8Ohms). This is the
default Output mode for our Installation Ampliers. Hi-Z refers to high impedance
speakers (70/100 Volt line).
6 7
Connecting to network control
Wireless Connection
A mobile, laptop or desktop device with WiFi functionality and a web browser is required.
Follow the steps below.
1. Connect the Installation Amplier to mains power using the supplied mains cable
and switch it on via the front panel Standby switch. Wait for the front panel WiFi
indicator to illuminate orange.
2. Use a mobile, laptop or desktop device to search for available WiFi networks.
Connect to, ‘MA [Amp Name] XXXX-XXXXX’ e.g. ‘MA IA750-4 2235-00018’ using the
password, ‘password’. The amplier serial number can be found on its rear panel.
3. Open a web browser and enter the following IP address: 192.168.4.1. The amplier
conguration web interface page will open in the browser app to enable amplier
conguration as required.
It is strongly recommended that the amplier WiFi password is changed following
initial wireless connection.
Continue to page 8 to learn about the conguration menus, setup and routing.
Wired Connection
A laptop or desktop device with Ethernet functionality, a web browser and a network
scanning app is required. Follow the steps below.
1. Connect the Installation Amplier Network Control socket directly to a laptop or
desktop device - or through a switch.
2. Connect the Installation Amplier to mains power using the supplied mains
cable and switch it on via the front panel Standby switch. Wait for the front panel
Network indicator to illuminate orange to indicate that the amplier has network
connectivity.
3. The default LAN IP address of the amplier is 192.168.64.100. Congure your laptop or
desktop device to a xed IP address in the same IP range, for example 192.168.64.10,
with Subnet mask 255.255.255.0 (or prex 24) and set Gateway to 192.168.64.1.
4. Open a web browser and enter the address http://192.168.64.100/ - The amplier
conguration web page interface will open to enable amplier conguration as
required.
Please refer to page 16 for speaker conguration before connecting your speakers.
The conguration menus are accessed via a web page interface and cover Input, Zone,
Output and General Settings functions. The conguration menus are fully described on
pages 8-23.
Before making input, output and GPIO connections, it is particularly important that the
output amplier format is congured appropriately for the speakers that are to be
connected. To do this, the amplier will need to be connected to the network. This can be
either wired or wireless.
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Setup and signal routing
Thanks to their network based conguration features, our Installation Ampliers offer
considerable versatility in terms of sources, signal routing, installation zones and output
modes. Inputs can be freely assigned to installation zones, and those zones assigned
freely to the available amplier outputs in either Lo-Z or Hi-Z modes.
This versatility enables, for example, one amplier simultaneously to drive both Lo-Z and
Hi-Z speakers, or for different inputs to be routed to different output zones.
The following paragraphs describe and illustrate the recommended procedure for
conguring input, zone and output routing. A general signal ow schematic is also
illustrated in the diagram below.
Input Setup Zone Setup & Routing Output Setup
Speaker Preset Parameters
Zone Adjustment Parameters
SPDIF Out (stereo)
Zones A (left) and B (right)
Input
Sensitivity Input
Gain Level
Adjustment Compressor
Analog 1 Output 1
Analog 2 Output 2
Analog 3 Output 3
Analog 4 Output 4
SPDIF (stereo)
Gain Trim Delay EQ Crossover EQ FIR Driver
Alignment Ploarity Limiter
Input
Sensitivity Input
Gain Level
Adjustment Compressor Gain Trim Delay EQ Crossover EQ FIR Driver
Alignment Polarity Limiter
Input
Sensitivity
Input
Selection
Output
Matrix
Zones A-D
Outputs 1-4
BTL
Amplier
2 x Lo-Z
1 x Hi-Z
BTL
Amplier
2 x Lo-z
1 x Hi-z
Input
Gain Level
Adjustment Compressor Gain Trim Delay EQ Crossover EQ FIR Driver
Alignment Polarity Limiter
Input
Sensitivity Input
Gain Level
Adjustment Compressor Gain Trim Delay EQ Crossover EQ FIR Driver
Alignment Polarity Limiter
Input
Gain
Gain
Pink
Noise
10 11
Setup and signal routing
Dashboard
With the Installation Amplier succesfully connected to a network, searching the IP
address from a web browser displays the Installation Ampliers conguration Dashboard
screen, as shown in the image opposite.
From the Dashboard the power can be switched On/ Off and the volume for each zone
can be adjusted. If the name for the zone has been altered within the Zone tab the same
name will also be displayed here.
Input Setup
Open the conguration Dashboard and select the Input Tab. The Input Tab is shown
opposite.
• To edit default input names simply select and type in the Input Name eld.
• Dene a mono or stereo input by selecting the appropriate option. Dening a
stereo input will reduce the total number of discrete inputs available.
• Select an input sensitivity option from the drop-down menu: +14dB, +4dB, -10dB
and ‘microphone’ options are available. Generally, the +14dB or +4dB options are
appropriate for ‘professional audio’ source hardware with balanced outputs, while
the -10dB option is more appropriate for ‘consumer audio’ source hardware with
unbalanced outputs. The ‘microphone’ option provides the signicantly greater
sensitivity required for microphones.
Note: Only dynamic microphones are suitable for connection. Phantom power for
condenser microphones is not provided. If necessary, adjust the input gain using the
slider, up/down icons or enter the value manually. Gain adjustment is intended for ne
output level adjustment following initial use.
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Setup and signal routing
Zone Tab
The Zone Tab enables installation zones to be dened and named, and provides access to
further submenus. Zones might be bar or restaurant areas for example, or different rooms
in a home. For all Zone Tab menus, the installation zone under conguration is selected by
highlighting one of the zone identiers (A, B, C or D) at the top of the page.
Zone Setup & Routing
Open the conguration Dashboard and select the Zone Tab. The Zone Tab is shown
opposite.
• Select the zone to be congured from the top of the page. The number of zones
available will depend on the amplier model, input setup and output mode (Lo-Z or
Hi-Z). For example, a two output amplier will have two zones available if only mono
inputs congured, but have only one zone available if any stereo input is congured.
Similarly, a four output amplier with only mono inputs congured but one output
congured for Hi-Z mode will have only three zones available.
Note: When congured in Hi-Z mode Installation Ampliers operate in ‘bridged’ mode.
This is where the output of two channels is combined for an increase in power. This
means that the number of output channels available in Hi-Z mode is half that available
in Lo-Z mode. Outputs can also be bridged in Lo-Z mode if using the IA750-2 or IA750-4.
• Name the zone by typing in the Zone Name eld.
• Adjust the zone volume if required by using the slider.
• Dene a mono or stereo zone by selecting the appropriate option. Dening a stereo
zone will reduce the total number of further zones available.
• Specify an input for the zone by selecting from the drop-down menu. Selecting a
stereo input for a mono zone will automatically sum the stereo channels to mono.
(left -6dB + right -6dB)
• The GPIO Volume Control option enables external volume control to be applied to
individual installation zones. The GPIO conguration menu can be found under the
Settings Tab.
• The Compressor option enables default or custom signal compression to be applied
to individual installation zones.
Note: Compression can be useful to reduce the volume difference between loud and
quiet audio material. The lower the compression threshold is set, the more the difference
between loud and soft will be reduced. The overall zone volume may need to be increased
when compression is used. The default compression parameters are appropriate for most
installations.
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Setup and signal routing
Output Tab
The Output tab enables amplier outputs to be named and provides access to further
sub-menus. For all Output Tab menus, the amplier output under conguration is
selected by highlighting one of the output identiers (1, 2, 3 or 4) at the top of the page.
Note: The number of individual outputs available for conguration will depend on the
Installation Amplier model and the input, zone and output mode conguration. For
example, the IA60-4 will have four outputs available if Lo-Z mode is selected and two
outputs if Hi-Z mode is selected. You can also mix by having two outputs in Lo-Z mode
and one output in Hi-Z mode.
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Setup and signal routing
Output Setup
Open the conguration Dashboard and select the Output Tab.
• Select the output to be congured.
• Specifying a Zone as stereo will automatically generate three output channel
options: left channel, right channel or summed mono. The summed mono signal
can potentially be used to drive a subwoofer (left -0dB + right -0dB).
• The Routing menu enables zones to be assigned to amplier outputs.
• The Delay menu enables audio delay to be applied to individual amplier outputs.
• The Equalizer menu enables parametric equalization to be applied to individual
amplier outputs. Equalizer settings congured for one amplier output can be
copied and applied to other outputs. The setting can be altered by pressing the Edit
function and using the sliders or by clicking on and dragging the different frequency
band numbers on the graph itself, as shown in the example opposite. To save any
changes press the OK button.
• Select the mode required for the output.
• The Speaker Preset menu allows you to Import or Export presets. For information on
creating speaker presets and adding them to your Speaker Library please refer to
page 21.
Selecting the Speaker Preset tab will also expand the listed options to show the
following sub-menus:
• The Crossover & Gain menu enables high or low-pass crossover lters and gain
adjustment to be applied to individual amplier outputs. Crossover lter settings
congured for one amplier output can be copied and applied to other outputs.
• The Speaker EQ menu enables parametric equalization to be applied to
individual amplier outputs following the application of crossover ltering.
Equalizer settings congured for one amplier output can be copied and
applied to other outputs.
• The Driver Alignment menu enables delay to be applied to individual amplier
outputs following the application of crossover ltering.
• The Polarity menu enables the polarity of individual amplier outputs to be
reversed.
• The Limiter menu enables signal limiting to be to be applied to individual
amplier output. There is are options for Clip, Peak and RMS Limiting.
Note: An output limiter can be used to restrict the peak volume level from speakers
connected to each output.
• The Output Mode menu enables individual amplier outputs to be switched off
or congured for Lo-Z or Hi-Z modes. In Hi-Z modes, a high-pass lter can also
be congured and applied to the output.
Note: Use of a high-pass lter with Hi-Z loudspeakers is useful to avoid the possibility
of distortion caused by low frequency line transformer saturation. Begin with the
default lter setting of 70Hz. If low frequency distortion is still audible, increase the
frequency setting one step at a time until the distortion is no longer audible.
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Settings Tab
The Settings Tab enables miscellaneous amplier settings to be congured and
installation data to be recorded. The Settings Tab provides access to further sub-menus.
• The System Information menu provides text elds for the recording of installation
data.
• The Device menu records amplier specic information such as the model number
and rmware version. A rmware update routine and identier ‘Find Me’ button can
also be found under the Device menu.
• The Backup & Restore menu enables amplier conguration data to be
downloaded to an external archive, and enables previously saved conguration
les to be uploaded and adopted by the currently connected amplier. The
connected amplier can also be reset to factory settings from here.
• The Speaker Library menu allows you to create a Library of presets and order them
into folders. Refer to page 20 for instructions on creating presets and adding them
to your library.
• The Power Management menu enables various automatic switch-on options to
be engaged. The Power Management menu also offers timed Standby and Mute
functions.
• The GPIO menu enables conguration of the multi-purpose GPIO interface pins,
refer to page 22.
• The LAN menu enables conguration and reset of the wired network options and
parameters.
• The WiFi menu enables conguration and reset of the wireless network options and
parameters.
Setup and signal routing
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