K-array Kommander-KA02 User manual

Kommander-KA02
Aluminum 200W amplier and
processing solution
USER GUIDE

KA02_uguide_1.1

1
Index
Unpacking 4
Introduction 5
Getting Started 5
Wirings 6
Output Channels Configurations 6
Wired Remote 7
Wireless Remote 7
Remote Connectivity 8
Bluetooth pairing 8
Azimut Discovery App 8
Azimut Control Interface 8
Reset Network Parameters 9
Azimut Control Interface 9
Local Streaming 11
System Update 12
Update via USB 12
Hardware Control Setup 13
Output Configuration 14
Routing 14
Azimut Remote App 15
Mounting Kits 17
K-BRK Assembly 17
K-RACK2 Assembly 18
Mechanical Drawings 19
Technical Specifications 20
Kommander-KA02
User Guide

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K-array declares that this device is in compliance
with applicable CE standards and regulations. Before
putting the device into operation, please observe the
respective country-specific regulations!
WEEE
Please dispose of this product at the end of its
operational lifetime by bringing it to your local collection
point or recycling center for such equipment.
This symbol alerts the user to the presence of
recommendations about the product’s use and
maintenance.
The lighting flash with arrowhead symbol within an
equilateral triangle is intended to alert the user to the
presence of uninsulated, dangerous voltage within
the product enclosure that may be of magnitude to
constitute a risk of electrical shock.
Symbols
General heed and warnings
This device complies with Restriction of Hazardous
Substances Directive.
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions - Keep these instructions
Heed all warnings
Installation and commissioning may only be carried out
by qualified and authorized personnel.
Switch-off the mains power supply before carrying out
any connection or maintenance operations.
• Read these instructions.
• Keep this instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
• Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/
apparatus combination to avoid injury from tip-over.
• Unplug this apparatus during lightning storms or when
unused for long periods of time.
• This loudspeaker system is intended for professional use.
• Beware of sound levels. Do not stay within close proximity of
loudspeakers in operation. Loudspeaker systems are capable
of producing very high sound pressure levels (SPL) which can
instantaneously lead to permanent hearing damage. Hearing damage
can also occur at moderate level with prolonged exposure to sound.
Check the applicable laws and regulations relating to maximum sound
levels and exposure times.
• Before connecting the loudspeakers to other devices, turn off the power
for all devices.
• Before turning the power on or off for all devices, set all volume levels to
minimum.
• Use only speaker cables for connecting speakers to the speaker
terminals.
• Be sure to observe the amplifier’s rated load impedance particularly
when connecting speakers in parallel. Connecting an impedance load
outside the amplifier’s rated range can damage the devices.
• Refer all servicing to qualified 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.
• K-array will not shoulder any responsibilities for products modified
without prior authorization.
• K-array cannot be held responsible for damage caused by improper use
of the loudspeakers.
Warning. Failure to follow these safety instructions
could result in fire, shock or other injury or damage to
the device or other property.
Kommander-KA02
User Guide

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Thank you for choosing this K-array product!
To ensure proper operation, please carefully read this owner’s
manual and safety instruction before using the product.
After reading this manual, be sure to keep it for future reference.
Should you have any questions about your new
device please contact K-array customer service at
[e-mail] or contact the official K-array distributor
in your country.
Your new amplifier has Spotify Connect built in.
You need a Spotify account to take advantage of Spotify
Connect.
Spotify Connect lets you control the music playing on your
device, using the Spotify app on your mobile, tablet or PC.
Listening is seamless. You can take calls, play games, even
switch your phone off – all without interrupting the music.
Learn more at spotify.com/connect
The Spotify software is subject to third party licenses found
here: www.spotify.com/connect/third-party-licenses
Listen out loud with Spotify Connect
1. Connect your Kommander-KA02 to your local network;
2. Open up the Spotify app on your phone, tablet or
laptop using the same network;
3. Play a song and select Devices Available;
4. Select your Kommander-KA02 and start listening.
Kommander-KA02
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A. Kommander-KA02 amplifier unit
B. Power supply with power cords
C. 2x Phoenix MC 1,5/ 3-ST-3,81 BK
3 pin balanced input connectors
D. 1x Phoenix MSTB 2,5/ 4-ST-5,08 BK
4 pin output speaker connector
E. 2x Phoenix MSTB 2,5/ 2-ST-5,08 BK
2 pin output speaker connectors
F. 1x Phoenix MC 1,5/ 5-ST-3,81 BK
5 pin General Purpose Input connector
1. Ethernet port
2. USB ports
3. Optical input
4. 3,5 mm jack analog input
5. Balanced analog inputs
6. Remote control connector
7. Output connections
8. Wi-Fi reset switch
9. GPIO port
10. DC inlet
11. Power switch
Unpacking
Each K-array amplifier is built to the highest standard and
thoroughly inspected before leaving the factory. Upon arrival,
carefully inspect the shipping carton, then examine and test
your new amplifier. If you find any damage, immediately notify
the shipping company. Check that the following parts are
supplied with the product.
Note about the Power supply
The Kommander-KA02 amplifier unit is provided with a
dedicated 24 VDC LPS power supply, suiting any nominal
input operating voltage in the range 100-240 VAC - 50/60Hz.
It is strongly recommended to use certified
24 VDC, 4.0 A LPS power supply only
Kommander-KA02
User Guide
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Introduction
The Kommander-KA02 is the smallest amplifier unit in
the Kommander line with an incredibly compact size of
144 x 46 x 144 mm (5.7 x 1.8 x 5.7 in).
The amplifier features two balanced analog inputs and a
fiber optical input working up to 192 kHz. It boasts Bluetooth
connectivity, mini jack input and USB ports for using MP3,
WAV, FLAC, AAC, ecc., files.
Converted by AKM’s quality ADC, the audio is processed by
a powerful DSP working at 192 kHz – 32 bit and amplified by
a 4-channel Class D module with digital I2S inputs.
With the backing of 200W, the KA02 can be arranged in
multiple output configurations such as 4 x 50W, 2 x 100W,
2 x 50W + 1 x 100W.
The onboard Quad Core 1.2 GHz – 64-bit processor allows
the end user to connect to the Internet in a multitude of
connectivity options. With the possibility to be controlled
via Wi-Fi by a dedicated app, the KA02 has the ability to
access music through the onboard Spotify and Web Radio
streaming.
The Kommander-KA02 amplifier unit can drive a number of
K-array loudspeakers in multiple unit configuration. Refer to
Output Channel Configurations, page 6 for more details
about connectivity.
Getting Started
1. Set the proper loudspeaker configuration, according to
the ones compatible with the Kommander-KA02 unit.
2. Unpack your new Kommander-KA02 unit and identify
the connectors bundle (see Unpacking, page 4).
3. Prepare the connectors and wiring (see Wirings,
page 6).
4. If available, connect the K-REMUCTRL wireless remote
control USB receiver to one of the free USB ports in the
Kommander-KA02 rear panel (see Wireless Remote,
page 7).
5. Plug all the connectors (audio input, output, GPIO etc.)
to the Kommander-KA02 unit, assigning the output
channels according to the loudspeaker configuration.
6. It is strongly suggested to connect the Kommander-
KA02 to the local network via a wired Ethernet
connection (see Remote Connectivity, page 8).
7. Switch the system on: please consider that the output
routing is muted by default.
8. Connect to the Kommander-KA02 to access the
Azimut Control Interface (see Azimut Control Interface,
page 8).
9. It is strongly suggested to update the system software
at this step to unlock new features (see System
Update, page 12).
10. In order to unmute the output routing, set the output
configuration according to the loudspeaker models and
the output channel routing (see Output Configuration,
page 14).
11. If needed, assign the built-in General Purpose Inputs
to the hardware controls (see Hardware Control Setup,
page 13).
12. Play music and start tuning your K-array system.
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6
Wirings
In order to set the proper connections with the input and
output devices, a set of terminal connectors are provided
within the package.
Output Channel Configurations
The Kommander-KA02 output channels can be arranged
in multiple loudspeakers configurations. The following table
shows the maximum power delivered at the minimum load
impedance by each output channel according to the output
configuration.
Loudspeaker
Name
Loudspeaker load
impedance
Max number of
loudspeaker in
parallel per ch
Lyzard-KZ1 16 Ω 4
Lyzard-KZ14 16 Ω 4
Vyper-KV25 8 Ω 2
Tornado-KT2 8 Ω 2
Domino-KF26 8 Ω 2*
Truffle-KTR24 4 Ω 2**
Truffle-KTR25 4 Ω 2**
Truffle-KTR26 2 Ω 1**
RAIL 48 Ω 12*
* Not to full power
** 2ch Parallel Bridge-Tied Load – PBTL
CH1 CH2 CH3 CH4
SE 50 W @ 4 Ω SE 50 W @ 4 Ω SE 50 W @ 4 Ω SE 50 W @ 4 Ω
PBTL 100 W @ 2 Ω SE 50 W @ 4 Ω SE 50 W @ 4 Ω
PBTL 100 W @ 2 Ω PBTL 100 W @ 2 Ω
The following table shows the maximum number of K-array
loudspeaker that can be connected to a single output channel
according to the amplifier driving capabilities.
Kommander-KA02
User Guide
Audio Input
Balanced Audio Input
6 mm
(0.25 in)
6 mm
(0.25 in)
12 mm
(0.5 in) Use only high quality speaker cables.
Wire gauges must comply with the loudspeaker
nominal impedance according to the cable run.
Ensure the amplifier’s minimum loading
impedance is matched, especially when
connecting multiple loudspeakers in parallel
Use only high quality signal cables
with proper grounding shield
12 mm
(0.5 in)
Speaker output
Speaker output
Parallel Bridge
Tied Load
PBTL
Single Ended
SE

7
AUDIO CONTROL
Status LED System power
Power switch
Status LED
Skip forward
Skip back
System power
Charge port
Volume up
Mute
Play/Pause
Volume down
Volume up
Volume down
Bluetooth
Bluetooth
Pairing LED
Wired Remote Wireless Remote
Standby Power On
Status LED pulse blinking solid white
Command Battery
low
received not received
Status LED single blink long blinking flashing
Bluetooth
Pairing
Press the Bluetooth button to set the
system to Bluetooth pairing mode
Bluetooth
Pairing
Hold down the Bluetooth button for 10
seconds to set the system to Bluetooth
Pairing mode
The wireless remote provides complete control over the
Azimut playback features.
The remote includes a high-efficiency rechargeable battery
with a switch that can extend the batter life when powered off.
When the battery discharges to approximately 10% remaining
life, the Status LED begins flashing: connect the remote’s
charge port to a standard USB port to recharge the internal
battery; use the provided cable.
Kommander-KA02
User Guide
Wiered remote
inlet

8
Remote Connectivity
The Kommander-KA02 amplifier can be controlled remotely
by a mobile device or desktop PC via the Azimut Control
Interface.
For instant playing the
Bluetooth connectivity
allows to pair the KA02
amplifier to any streaming
Bluetooth device.
Featuring the Spotify
Connect, the music
playing can be controlled by any device using the Spotify
app (you need a Spotify account to take advantage of Spotify
Connect).
Bluetooth pairing
Bluetooth Connectivity enables direct audio streaming to the
Kommander-KA02 from any device supporting the Bluetooth
4.1 protocol. The table below shows how to set the KA02
unit in Bluetooth Pairing mode. Once in Pairing mode, the
listening mode lasts in 180 s.
Device Pairing instruction
Wireless Remote Press the Bluetooth button to set the
Kommander-KA02 to Bluetooth Pairing mode
Wired Remote Hold down the Bluetooth button for 10
seconds to set the system to Bluetooth
Pairing mode
Azimut Control Interface 1. Open the Main menu and navigate the
Network & Bluetooth section
2. In the Bluetooth section click on the
Pairing button
Hardware Control Press on the button linked to the General
Purpose Input terminal assigned to the
Bluetooth pairing action
Azimut Remote App Press the Bluetooth button to set the
Kommander-KA02 to Bluetooth pairing mode
Azimut Discovery App
The Azimut Discovery app allows to discover and access the
Azimut Control Interface on the Kommaner-KA02 amplifier unit
and Azimut systems within the network.
Download the Azimut Discovery App suiting your mobile device:
Azimut Control Interface
The Azimut Control Interface is a web application built-in the
Kommander-KA02 unit and can be accessed by either directly
connecting to the amplifier’s built-in Wi-Fi (the amplifier’s
Wi-Fi SSID is written on a label on the unit’s bottom plate), or
via an Ethernet connection in a LAN environment.
Once connected to the amplifier, launch the Azimut Discovery
App to find and access the Azimut Control Interface.
Wi-Fi SSID: look on the label on the unit’s bottom plate
Default password: 12345678
D efa u l t I P: 19 2.16 8.10.1
We strongly suggest to implement the Kommander-KA02
amplifier unit within your local network environment and then
access its features relying on your wireless access point or
wired devices.
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Main Menu
Audio Sources
Blue buttons
highlight active
inputs
Audio controls
change
according to the
player selected
Player Controls
USB Track List
Startup options
Azimut Control InterfaceReset Network Parameters
With the system on, hold down the Network Reset button
on the rear panel for 10 seconds to revert the network
parameters to the default factory settings.
The Network Addressing mode reverts to DHCP and the
default Wi-Fi IP address and password are restored.
10 seconds
Kommander-KA02
User Guide

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Network & Bluetooth
Click this button
to set the system
in Pairing mode
waiting for a
connection.
Click this button
to set a new
password for the
local Wi-Fi of the
Azimut system
Click this button
to change
Ethernet settings
(i.e. a static IP
address and
a different
netmask)
Pairing
Edit Password
Edit Ethernet
Main Menu
Remote Control
The default view with Audio Sources
and Players Selections.
Audio Setup
User equalizer and level tuning.
Local Streaming
Manage a group of devices by a single
Azimut system.
Network & Bluetooth
Modify network and Bluetooth settings.
Advanced
Set advanced features.
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Local Streaming Local Streaming
This feature allows a group of Kommander-KA02 amplifiers
to be managed by a single device.
Preliminary setup:
• Connect all the Kommander-KA02 to the same network;
• Set a unique name on each device in order to simplify dectection and
setup (see Advanced Settings, page 12);
• Select one system as Master device on the network: this device will
stream its music to any other Kommander-KA02 marked as Slave.
Local streaming setup:
1. Connect to one Kommander-KA02 amplifier and access its Azimut
Control Interface;
2. Browse the Main Menu and click on Local Streaming: the view
will show the complete list of the systems within the network of the
amplifier you are connected to;
3. For each listed system you can:
• set it as Master: this device will stream the music to any other Slave
amplifier in the network.
WARNING: only one Master device is allowed within the network
• set it as Slave: this device will play back the music streamed by the
Master;
• toggle the Standby mode in order to wake up or turn off the system
(resume or stop playback accordingly);
• set the playback volume.
By accessing the Azimut Control Interface of a Kommander-
KA02 amplifier it is possible to override the Local Streaming
setting and free the device from the streaming group.
This device will
stream audio to
any Slave system
in the network
This device will
playback the
same audio
played by the
Master device
This device
will playback
audio from
local sources
or Internet
independently.
Master
Slave
Free
Kommander-KA02
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12
Advanced Settings System Update
The Kommander-KA02 power amplifier can be easily
updated in the Advanced Settings view.
1. Connect to the Kommander-KA02 amplifier and access its Azimut
Control Interface;
2. Browse the Main Menu and click on Advanced;
3. Expand the Version Info section: if the amplifier is connected to the
Internet, the device will look for updates on K-array website. When a
new firmware version is available, the Download button lights up.
4. Click on the Download button and wait for the firmware update file to
be saved onboard.
5. When the Install button lights on, click on the Install button to start the
system update.
Do not reboot the amplifier until the alert message appears.
During firmware update, do not modify any parameter of the
device on the web interface.
Update via USB
1. Download the firmware packages from the Support webpage at
www.k-array.com;
2. Format the USB memory stick with FAT16 or FAT32 file system;
3. Create a folder named “update” (case sensitive) in the root of the USB
memory stick;
4. Copy the firmware packages marked as “update” into the update
folder: files must follow the correct naming pattern, and both .package
and .package.sha256 files must be present into the folder:
|-update\
|-rootfs-update-1.0.5.0.package
|-rootfs-update-1.0.5.0.package.sha256
5. Connect the USB memory to the Kommander-KA02 amplifier;
6. Connect to the amplifier and access its Azimut Control Interface;
7. Browse the Main Menu and click on Advanced;
8. Expand the Version Info section;
9. Click on the Install via USB button.
Kommander-KA02
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13
1234
Hardware Control Setup
The Kommander-KA02 power amplifier provides a General
Purpose Input connector designed to connect up to four
external normally open (NO) switches* to be set as further
remote user customizable controls.
In order to bind the remote control to a Kommander-KA02
operating functionality (actions) follow these step:
1. Connect the external NO switch to the ground (GND) terminal and to
one of the four available terminals of the flying plug;
2. Plug the flying plug to the Hardware Control port on theKommander-
KA02 back panel;
3. Open the Azimut Control interface, click on the Main Menu icon and
select Advanced;
4. Scroll down to theHardware Control section;
5. Find the control with the number corresponding to the hardware control
terminal where you plugged the remote switch and set the proper
action;
6. Enable the remote control;
7. Click on Save Setup to make the settings effective.
Actions
mute/unmute
set volume
(max: +12, min: -90)
Increase volume
Decrease volume
play/pause
play/pause Spotify
bluetooth pairing
*external normally open (NO) switches
are not provided in the amplifier
package.
Kommander-KA02
User Guide

14
Output Configuration
This feature enables modifications of the loudspeaker
assignment to the Kommander-KA02 amplifier output
channels.
These configurations shall be set by professional
operators.
WARNING: Incorrect loudspeaker selection
may seriously damage the connected loudspeakers.
Routing
This feature enables modifications of the LEFT and RIGHT
input channel assignment to the Kommander-KA02 amplifier
output channels.
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USB Player
A B C D
General
192.168.10.1
Settings
Azimut
Back
Custom Button A
Enabled
Action URL
PUT Data (leave empty for GET requests)
Custom Button B
Enabled
Action URL
PUT Data (leave empty for GET requests)
Custom Button C
Enabled
Action URL
Azimut Remote App
Azimut Remote is a iOS application that
allows the user to remotely control a single
Kommander-KA02 amplifier unit via an Ethernet
connection.
Azimut Remote offers an easy to use interface for managing
audio playback and Bluetooth Pairing, as well as four
completely user-programmable buttons. .
In order to connect the Azimut Remote to the Azimut system:
1. Be sure that the Azimut system and your iOS device are connected to
the same network.
2. Launch the Azimut Discovery application (see Azimut Remote App,
p. 15). The app will show the discovered Azimut Systems on the
network: make note of the IP address of the device you want to control
with the Azimut Remote app.
3. Launch the Azimut Remote app and open the Settings feature.
4. Insert the IP address of the device you want to control in the General
field on top of the page.
5. Click on Back: the app is now linked to your Azimut System
Kommander-KA02
User Guide
Play back
Controls
Programmable
buttons
Settings button
Volume Control
Bluetooth
Pairing button
IP address of
the device you
want to control
Button B
settings
Standby button

16
General
192.168.10.1
Settings
Azimut
Back
Custom Button A
Enabled
Action URL
PUT Data (leave empty for GET requests)
Custom Button B
Enabled
Action URL
PUT Data (leave empty for GET requests)
Custom Button C
Enabled
Action URL
In order to customize the action associated to the four
programmable buttons:
1. Select the button you want to program and set the proper action
among the one listed in the table below.
2. Some actions require you to define the argument of the setting (e.g. the
volume) in the PUT Data field. If not required, leave this field empty.
3. Enable the button to make it active.
Description Action PUT data
Mute ON /api/v1/dsp/main/mute {“mute”: true }
Mute OFF /api/v1/dsp/main/mute {“mute”: false }
Set volume at value # (span from -90 to 12) /api/v1/dsp/main/volume {“volume”: # }
Volume UP /api/v1/dsp/main/volume/up {}
Volume DOWN /api/v1/dsp/main/volume/up {}
Start playback /api/v1/player/play
Pause playback /api/v1/player/pause
Skip backward /api/v1/player/prev
Skip forward /api/v1/player/next
Set standby ON /api/v1/tas/standby {“mute”: true }
Set standby OFF /api/v1/tas/standby {“mute”: false }
Set the device as SLAVE in a local streaming network /api/v1/multiroom/slave {“slave”: true}
Release the device from the local streaming network /api/v1/multiroom/slave {“slave”: false}
Set the device as MASTER in a local streaming network /api/v1/multiroom/master {“master”: true}
Release the local streaming network /api/v1/multiroom/master {“master”: false}
You can eventually control a different device within the
network setting preceding the action string with the IP
address of the target device; e.g. pause playback of the
device with IP 192.168.10.100:
h t t p: //19 2.16 8 .10.10 0 /a p i / v 1/p l a y e r/p a u s e
Kommander-KA02
User Guide
/api/v1/tas/standby
{“mute”: true }

17
70mm
[2,8in]
140mm
[5,5in]
32mm
[1,3in]
16mm
[0,6in]
18mm
[0,7in]
3. Position the amplifier unit on the bracket and use the
screws to secure it.
Torx T10
Torx T10
Mounting Kits
The Kommander-KA02 amplifier is designed to be controlled
remotely, with no need of direct access the unit. This makes
the devices easy to install, either in a recess or on top of a
shelf or inside of a rack cabinet.
Two mounting kit are available:
• K-BRK bracketing system for single KA02 unit
• K-RACK2 rack mount 1U for three KA02 units.
K-BRK Assembly
1. The Kommander-KA02 amplifier unit can be mounted
on any surface with any orientation. Identify a
comfortable position for the amplifier on the mounting
surface and make two holes at the distance of 70mm
(2.8 in) to each other.
Install the K-BRK bracket on the surface with the
provided mounting kit.
2. Focus on the Kommander-KA02 unit: unscrew the
lateral screws positioned at the center of the unit and
remove the plates from the bottom of the amplifier.
Keep the screws aside for further use.
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K-RACK2 Assembly
1. Remove the rubber feet from the bottom surface of the
Kommander-KA02 amplifier unit.
2. Position the amplifier unit on the K-RACK2 so that the
small tabs in the bracket enter the slots at the bottom of
the amplifier front panel.
3. Use the screws provided with the K-RACK2 kit to
secure the amplifier.
4. Up to three Kommander-KA02 amplifier units can be
mounted on a single K-RACK2 occupying 1U in a rack
cabinet.
Kommander-KA02
User Guide