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USER’S GUIDE
English
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CONTENTS
SYMBOLS 5
1. INTRODUCTION 7
2. APPLICATIONS 7
3. KEY FEATURES 7
4. UNPACKING 8
5. SAFETY 8
6. PHYSICAL 10
7. AMPLIFIER 11
7.1 AC POWER CONNECTOR 11
7.2 VOLTAGE REQUIREMENT 11
7.3 CURRENT REQUIREMENT 11
7.4 REAR PANEL 12
7.5 TOUCH SCREEN FUNCTIONS 14
7.6 AUDIO INPUT CONNECTOR WIRING 15
7.7 AMPLIFICATION AND PROTECTION CIRCUITRY 15
8. K-FRAMEWORK 16
8.1 SYSTEM REQUIREMENTS 16
8.2 WHERE TO GET THE MOST UPDATED SOFTWARE 16
9. CONFIGURATIONS 17
10. ACCESSORIES 19
11. SERVICE 20
12. SPECIFICATIONS 21
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This symbol alerts the user to the presence of recommendations about product’s use
and maintenance.
This symbol alerts the user to the presence of recommendations about the product’s use
and maintenance.
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 device complies with Restriction of Hazardous Substances Directive.
SYMBOLS
Warning! Dangerous voltages: RISK of electric shock.
Terminals marked with this symbol are HAZARDOUS LIVE and the external wiring
connected to these terminals requires installation by an instructed person or the use of
ready-made leads or cords.
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1. INTRODUCTION
The KF12MT and the KF12P are K-array’s newest multi-task additions to its portfolio of professional, high-quality loudspeakers in the
Redline Series. The KF12MT is a 12” coaxial full range multi-purpose powered speaker and is the successor to the long serving KF12
model.
Compared to its predecessor, this portable speaker features exciting updates. The KF12MT’s integrated on-board touch screen with
matrix control provides intuitive managing and editing of powerful DSP controlling. Additional functionalities include: a delay up to
400ms, parametric filters for room eq, 2 analog + 2 digital inputs in AES/EBU, routing options, USB and Serial connections for remote
control and a full range powered output of 1000 W on 8 Ω. Having 2 analog or digital fully independent inputs on board can create real
stereo systems using one powered and one passive KF12P speaker. Thanks to its multi-purpose function, it can satisfy many different
venue requirements. It is ideally used as a stage monitor due to its wedge shape, as a stereo system with one active (KF12MT) and one
passive (KF12P), or as a main PA system for small and medium size events and more.
Designed and manufactured in Italy, the KF12MT and the KF12P give uncompromising sound quality in a small footprint and are
compatible with a variety of accessories. Housed in a black wood chassis and black steel grill, the KF12MT has a modern, sophisticated
look. Customized colors are available upon request.
2. APPLICATIONS
• Unique performance-to-size ratio
• Symmetrical horizontal and vertical coverage
• Angled cabinet for floor monitor use
• Integrated 35mm pole adapter for different uses
• Integrated DSP with multiple analog and digital inputs
• On-board touch screen with matrix control
• Configurable fullrange powered output
• RS485 and USB connectivity for remote control
3. KEY FEATURES
• Stage monitor on live stages
• Theatrical sound reinforcement
• Concert halls, clubs, houses of worship
• Portable and installed audio-visual systems
• Cinema and special effects
• Optimized for KF12P and KMT18P
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4. UNPACKING
Each K-array loudspeaker is built to the highest standard and thoroughly inspected before leaving the factory. Upon arrival, carefully in-
spect the shipping carton, then examine and test your new loudspeaker. If you find any damage, immediately notify the shipping company.
Only the consignee may institute a claim procedure regarding the system’s electronic equipment.
5. SAFETY
WARNING
Read all safety information below and operating instructions before using this device to avoid injury.
Warning. Failure to follow these safety instructions could result in fire, shock or
other injury or damage to the device or other property.
SAFETY AND HANDLING INFORMATION
It is important that loudspeaker systems are used in a safe manner.
Avoiding Hearing Damage. Professional loudspeakers are capable of producing extremely high sound levels and should be used carefully.
Never stand close to loudspeakers driven at high volume. Set the volume to a safe level. You can adapt over time to a higher volume of
sound that may sound normal but can be damaging to your hearing. Hearing loss get worse every time you’re exposed to a sound level of
90 dB or over for an extended period of time. If you experience ringing in your ears or muffled speech, stop listening and have your hearing
checked. The louder the volume, the less time is required before your hearing could be affected.
Choking Hazards. This device contains small parts, which may present a choking hazard to small children. Keep the device and its
accessories away from small children.
Avoiding Water and Wet Locations. Do not install the system in wet or humid locations without using weather protection. Take care
not to spill any food or liquid on the device. In case it gets wet, unplug all cables, turn off the device before cleaning, and allow it to dry
thoroughly before turning it on again. Do not attempt to dry the device with an external heat source, such as a microwave oven or hair
dryer. A device that has been damaged as a result of exposure to liquids could be not serviceable. If the device is exposed to rain or
excess moisture, unplug the power cord immediately.
Keeping the Outside Clean. Handle the device with care to maintain its appearance. To clean it, unplug all cables and turn off it. Warning:
unplugging the power cord is the only way to disconnect power completely. Then use a soft, dry or slightly damp cloth. Avoid getting
moisture in openings. Don’t use window cleaners, household cleaners, aerosol sprays, solvents, alcohol, ammonia, or abrasives to clean
the device.
Carrying, Handling and Installing the device. The device contains sensitive components. Do not drop, disassemble, open, crush, bend,
deform, puncture, shred, microwave, incinerate, paint, or insert foreign objects into it. If your device has been dropped or damaged, or if
liquid has been spilled into the chassis, unplug the power cord immediately.
Do not operate speakers for an extended period of time with sound distortion. This is an indication of malfunction, which in turn can
generate heat and result in a fire.
To reduce the risk of overheating the device, avoid exposing it to direct sunlight and take care to do not install it near heat emitting
appliances, such as a room heater or stove.
No naked flame sources such as lighted candles should be placed near the device.
Operate the device in a place where the temperature is between -20°C and 50°C (-4°F to 122° F). Avoid dramatic changes in temperature
or humidity when using it, as condensation may form on or within the device.
During the use, it is normal for the device to get warm. The exterior of the device functions as a cooling surface that transfers heat from
inside the unit to the cooler air outside.
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The device should be placed so that its location does not interfere with its proper cooling. For example, the device shouldn’t be placed
on beds, carpets or similar surfaces that could create an obstacle for the ventilation openings.
To reduce the risk of electric shock, unplug the power cord before connecting audio cables.
Set up your device on a stable retaining horizontal surface. If combined or mechanically connected with other products, always verify the
stability of the resulted system. Install the unit only in a location that can structurally support the weight of the unit, far away from people
who can interfere with the stability of the system. In case of outdoor installation, assure that the wind does not interfere with the system’s
stability, taking extra securities like chains, weights, ropes or any other certified anchoring systems. Doing otherwise may result in the
unit falling down, causing personal injury or property damage. The system should only be suspended by qualified personnel following safe
rigging practices. Secure fixings to the building structure are vital. To clarify any doubt you may have, seek help from architects, structural
engineers or other specialists.
Protect the power cord from being walked on or pinched.
This audio system is not intended for use in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic
control systems,or for any other uses where the failure of the audio system could lead to death, personal injury, or sever environmental
damage.
Do not make repairs yourself. Caution, risk of electric shock. Do not open the device, it contains potentially hazardous voltage. Never
attempt to disassemble, repair or modify the system yourself. Disassembling the unit may cause damage that is not covered under the
warranty. The device contains no user-serviceable parts. Repairs should only be performed by factory trained service personnel. Do not
plug the power cord if you suspect that your device needs service or repair.
Voltage requirement. Make sure that the supplied voltage stays within the specified range. Verify that your mains connection satisfies
the power ratings of the device.
Only connect the power supply to an appropriate power outlet.
Warning: since the device is a CLASS I apparatus, it must be only connected to an AC three-wire grounding outlet. If your outlet isn’t
grounded, contact a licensed electrician to replace it with a property grounded outlet.
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6. PHYSICAL
20,55in
522mm
15,37in
390,4mm
10,28in
261mm
10,28in
261mm
Flange
36 (1.42'')
1,42in
36mm
9,06in
230mm
4,42in
112,3mm
0,91in
23mm
8,91in
226,3mm
5,47in
139mm
14,38in
365,3mm
7,5°
Fixing points M8
Fixing points M8
9,06in
230mm
0,91in
23mm
4,42in
112,3mm
54°
Fixing points M8
Fixing points M8
Weight
19.6 Kg (43.21 lb)
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7. AMPLIFIER
7.1 AC POWER CONNECTOR
7.2 VOLTAGE REQUIREMENT
7.3 CURRENT REQUIREMENT
The amplifier module and any audio equipment connected to it (mixing consoles, processors, etc.) must be properly connected to
the AC power distribution, preserving AC line polarity. All grounding points should be connected to a single node or common point,
using the same cable gauge as the neutral and line cables. Bad grounding connections within an audio system can produce noise,
hum and/or serious damage to the input/output stages in the system’s electronic equipment.
Before applying AC to any K-array self-powered speaker, be sure that the voltage
potential difference between neutral and earth ground is less than 5 VAC.
The KF12MT’s switching power supply accommodates AC mains operating at either 115V or 230V. The KMT amplifiers will continue
to operate safely, without interruption, provided the AC voltage remains within 90 - 135V or 190 - 250V (230V), at 50 or 60 Hz.
Please verify that your AC mains connection is capable of satisfying the power ratings for the device.
CAUTION
Do not connect the system to AC power mains exceeding 250V. Doing so will cause
significant damage to the device and create serious risk for users!
The KF12MT presents a dynamic load to the AC mains, drawing additional current as operating levels increase. Different cables and
circuit breakers heat up at varying rates, so it is essential to understand current ratings and how they correspond to circuit breaker
and cable specifications. Maximum continuous RMS current - measured over a period of at least ten seconds - is used to calculate
the temperature increase in cables, which drives the proper size and gauge cable and rating for slow-reacting thermal breakers.
Maximum burst RMS current - measured over a period of approximately one second - is used to select the rating for fast reacting
magnetic breakers.
For best performance, voltage drops should not exceed 10% at 115V or 5% at 230V. The minimum electrical service amperage
required by a K-array loudspeakers system is the sum of their maximum continuous RMS current. We recommend allowing an
additional 30% above the minimum amperage to prevent peak voltage drops at the service entry.
410VA(>10 sec) - 2200VA (<1 sec)
KF12MT max continuous apparent power (VA)
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7.4 REAR PANEL
1
2
3
4
5
12
13
14
15
16
17
18
19
20
6
7
10
11
9
8
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RS485 XLR link
USB Connection from a PC
RS485 XLR link RS485 XLR link RS485 XLR link
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1) CH1 Line Input. XLR line level input with +4 dBu sensitivity.
2) CH2 Mic/Line Input. XLR input, with selectable sensitivity for Mic (-30 dBu) or Line (+4 dBu).
3) CH1 Parallel Line Out. XLR parallel output, providing a direct signal from the CH1 Line Input. This output cannot be processed or
controlled via the K-Framework software.
4) Phantom Power switch. Turns phantom power (48V) on/off on CH1 and CH2 inputs.
5) Mic/Line switch. Selects CH2 input sensitivity for Mic ( -30 dBu) or Line ( +4 dBu) level.
6) Limiting LEDs. Independent LEDs for the CH1 and CH2 inputs, which blink when the optical limiter engages to protect the
corresponding preamp circuit. Limiter threshold is +5 dBu.
7) DSP Out. Auxiliary XLR balanced output, controlled via the K-Framework software. Users can select the signal routed to this output
and manage its amplitude and EQ individually.
8) DSP Out Power switch. Turns phantom power (48V) on and off on the DSP out. Phantom power can be engaged to drive additional
wireless signal transmitters/receivers.
9) AES/EBU Digital Input. XLR input connector for two-channel AES/EBU digital audio, accepting sample rates from 32 kHz – 96 kHz.
10) AES/EBU Digital Output. XLR output, providing two-channel digital audio from AES/EBU Input, at a sample rate of 48 kHz. This
output cannot be processed or controlled via the K-Framework software.
11) REMOTE RS485 Link Input. XLR input for connecting the KMT from another RS485 device in a K-Framework network. RS485 Link
Input can also be used to connect a computer running the K-Framework software (requires K-USB USB-to-RS485 adapter).
12) REMOTE RS485 Link Output. XLR output for connecting additional RS485 devices in a K-Framework network.
13) REMOTE USB Input. Connects a computer running the K-Framework software, for remote control of the KMT. Users can manage
an entire network of RS485 devices with one PC connected via USB (see RS485 Network diagram, below).
14) Speaker Out. Powered Speakon output, used to drive passive speakers, like a KP series mid-high module or a KMT series passive
subwoofer
15) Power switch. Turns the KMT on and off.
16) AC Input. Powercon input for AC power. See p. 11 for voltage and power requirements.
17) AC Link. Powercon ouput for feeding AC mains power to additional K-array components with a powercon AC input socket.
18) Extension Connector. Multi-pin connector for various K-array extension modules, for wireless control and audio transmission,
memory extension, digital signal encoding and audio reproduction.
19) Power On LED. Indicates the system is ON.
20) TOUCH SCREEN Control panel. Provides access to the main functions of the DSP on board (see Section 8.5)
RS485 network
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The Output page allows users to independently control the
amplitude of the signal routed to the Subwoofer, the Speaker
Output and the XLR DSP Output.
Two Preset pages allow users to load presets stored on-board. The
arrow buttons on the top right corner of the screen provide access
to the Factory and User preset pages. The arrows are also used to
scroll through, select and load one of the available presets.
The Info page contains information about the current software and
firmware, and the Logical ID of the KMT module. The Logical ID
is automatically assigned to the KMT unit when connected to a
K-Framework network.
Three Routing pages allow users to manage the routing of the four
input channels to the three outputs (Subwoofer, Speaker Out and
XLR DSP Out) as well independently set output volume and delay
for each output.
The delay values set in the Routing pages are summed to the
global delay assigned on the Delay page.
The arrow buttons on the top right corner of the screen provide
access to individual Routing pages for the Subwoofer, Speaker Out
and XLR DSP Out.
Notes: The XLR DSP page does not provide control over delay for
this output.
OUTPUT PAGE
PRESET PAGES
INFO PAGE
ROUTING PAGES
The Input page allows users to independently manage the
amplitude of all the four input channels.
INPUT PAGE
HOME PAGE
7.5 TOUCH SCREEN FUNCTIONS
To reach the Home page from any other page, touch the
Home button.
The main functions of the onboard DSP can be managed with the
integrated touch screen. Functions are grouped into six pages,
shown as icons on the Home page.
The Delay page allows users to independently set the delays for
the speaker system (Subwoofer and Speaker Out). This delay is
summed with the delays from the Routing pages of Subwoofer and
Speaker Out. The COARSE and FINE controls allow users to change
the delay in larger and smaller steps.
Notes: The delay control does not affect the XLR DSP out. Delay
for this output line can only be managed through the K-Framework
dedicated controls.
DELAY PAGE
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7.6 AUDIO INPUT CONNECTOR WIRING
The Audio section includes parallel LINK, which allows
users to distribute an audio signal to multiple units. Up to
30 different modules can be connected in parallel on the
same balanced line (with a source output impedance of
600 ohm).
CH 1 Line Input (female, balanced XLR) is wired in parallel
to CH1 Line Parallel Out (male, balanced XLR). To create
your own audio cables, please use the following wiring
diagrams:
hot
XLR connecto r
grd
cold
hot
grd
cold
2
1
3
2
1
3
INPUT PARALLEL
OUTPUT
The KF12MT IS powered by a 2-channel digital amplifier with 1,050 W output power per channel (EIAJ test).
The KF12MT’s amplifier functions, including crossovers, equalization, phase response, and driver protection, are controlled by an
on-board DSP processor.
KMT series amplifiers are equipped with several protection circuits to prevent damage. Two independent audio limiters – Clip
Limiter and Average Power Limiter – protect the internal circuitry against overload. A Peak Current Shut Down protects the output
stage with a tripping point at 35A. If tripped, Peak Current Shut Down will reset after 2 seconds. A Temperature Protection Limiter
also ensures the output stage stays below a temperature of 85° C (approximate temperature of output power device).
7.7 AMPLIFICATION AND PROTECTION CIRCUITRY
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8. K-FRAMEWORK
8.1 SYSTEM REQUIREMENTS
8.2 WHERE TO GET THE MOST UPDATED SOFTWARE
SYSTEM REQUIREMENTS:
Operating System: Windows XP / Vista / 7
CPU: Intel Pentium Dual Core
Memory: 2 GB
REQUIRED COMPONENTS:
Microsoft .NET Framework 4
Microsoft Visual C++ 2010 Redistributable Package (x86/x64)
Available on the Microsoft website:
http://www.microsoft.com/en-us/download/default.aspx
You can find the most updated version of the management software on the K-array’s website, downloadable at this link
http://www.k-array.com/en/download/software.html
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A.C.
A.C.
Powered
output
Powered
output
CH. 1
CH. 1
CH. 1
KF12MT
KF12MT
+
+
KF12MT
KMT18P
KF12MT
KF12P
KF12P
CH. 2
You can use either two input channels or
only one input channel.
If you use two channels you can also route
two different signals to the speakers.
The stand-alone use is the easiest and
the most plug-and-play way to use a
KF12MT as a monitor. All you need to do
is plug your signal and power connectors.
If you need a bass reinforcement, the
1000 W powered output channel can also
be used to feed a passive subwoofer.
MONITOR USE
9. CONFIGURATIONS
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A.C.
A.C.
A.C.
Powered
output
Powered
output
CH. 1
CH. 1
KF12MT
KF12MTKF12MT
KF12P
CH. 2
CH. 1
L
L
R
R
If you need a bass reinforcement, you can
use two active KF12MTs for both you P.A.
sides(L+R), feeding a different subwoofer
from each 1000 W powered output
channel.
The shape of the KF12, provided with two
different flanges for the mounting on a
pole, allows you to configure many kinds
of set up
PA USE
Similar to the monitor use, when you
employ the KF12MT combined with a
KF12P as a stereo P.A. system you can
connect both the main Left and Right
signal from your audio source. Then you
can route one signal to the KF12MT and
the other to the powered output socket
feeding the KF12P
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10. ACCESSORIES
The KF12MT and the KF12P are compatible with a variety of accessories which can be ordered from
K-array’s sales support office, sales@k-array.com.
K-F12wall
Wall bracket to install one KF12P or KF12MT for
vertical and horizontal congurations to satisfy many
different venue requirements
K-wire2 2mt long speakon cable (2 pins)
K-pole1
Extensible pole to install one KF12P or KF12MT on a
KMT18 subwoofer
K-wire15 15mt long speakon cable (2 pins)
K-F12WALL
Wall bracket to install one KF12P or
KF12MT for vertical and horizontal
configurations to satisfy many different
venue requirements
K-POLE1 K-WIRE2
K-WIRE15
Extensible pole to install one KF12P
or KF12MT on a KMT18 subwoofer
2mt long speakon
cable (2 pins)
15mt long speakon
cable (2 pins)
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11. SERVICE
To obtain service:
1) Contact the official K-array distributor in your country. Your local distributor will direct you to the appropriate service center.
2) If you are calling for service, please have the serial number(s) of the unit(s) available for reference. Ask for Customer Service, and be
prepared to describe the problem clearly and completely.
3) If the problem cannot be resolved over the phone, you may be required to send the unit in for service. In this instance, you will be
provided with an RA (Return Authorization) number which should be included on all shipping documents and correspondence regarding
the repair. Shipping charges are the responsibility of the purchaser.
Any attempt to modify or replace components of the device will invalidate your warranty. Service must be performed by an authorized
K-array service center.
Cleaning:
Use only a soft, dry cloth to clean the housing. Do not use any solvents, chemicals, or cleaning solutions containing alcohol,
ammonia, or abrasives. Do not use any sprays near the product or allow liquids to spill into any openings.
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12. SPECIFICATIONS
ACOUSTICS
Speaker power handling 800 + 200 W
(AES)
Frequency range (-10 dB) 55 – 19 kHz
(1)
SPL 1W/1mt
99 dB
Maximum SPL 127 dB (cont.) – 133 dB (peak)
(2)
COVERAGE
Horizontal 70°
Vertical 70°
CROSSOVER
Type Internal Passive Crossover
TRANSDUCERS
Coaxial Transducer 12” Neodymiun magnet Woofer with 3” voice coil
AUDIO INPUT
Analog connectors 2 male + 2 female 3-pin balanced XLR
Digital connectors
1 male + 1 female 3-pin XLR
REMOTE CONTROL INPUT
Connector 1 male + 1 female XLR parallel / 1 USB B Jack serial converter
AUDIO POWER OUTPUT
Connector 1 x Female 4-pin Speakon
Wiring Pin1+= CH1+ Pin1- = CH1- Pin2+= N.C. Pin2= N.C.
POWER INPUT
Connector 2 x PowerCon IN/OUT
AMPLIFIER
Type 1 module class D – DSP controlled
Nominal power output 2 X 1050 W @ 8 Ω 1% THD + NOISE
(3)
Protection Dynamic Limiter , Over Current , Over Temp. Short Circuit
Frequency response 10 Hz – 25 KHz (+/- 3 dB) for 1W @ 8 Ω
Damping factor 8Ω, 100 Hz > 500
THD+N 1KHz, 1 W 0.010%
Thermal dissipation
1/8 of max output power @ 8Ω = 282 BTU/h (71KCal/h)
1/4 of max output power @ 8Ω = 464 BTU/h (117KCal/h)
AC POWER
Nominal voltage 115 / 230 Vac auto switching
Operating range 85 - 130 Vac 60Hz / 190 - 240 Vac 50Hz (Auto Switch)
I. Nom 5.5 A / 115 Vac - 2.9 A / 230 Vac
CONSUMPTION
Efciency >80% (typical)
1
/8 rated power (pink noise) @ 4 Ω 410 W
CERTIFICATION
IP 20
PHYSICAL
Dimensions 39 cm x 52.2 cm x 36.5 cm (15.37“ x 20.55” x 14.38 “)
Weight
19.6 Kg (43.21 lb)
Notes for data
1. With Dedicated preset
2. Measured with musical signal
3. EIAJ Test Standard, 1KHz, 1%THD
New materials and design are introduced into existing products
without previous notice. Present systems may differ in some respects
from those presented in this catalogue.
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13. DECLARATION OF CONFORMITY
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The contents of this manual are furnished for informational purposes only. K-array s.u.r.l. assumes no responsibility for any errors or inaccuracies that may
appear in this manual. K-array s.u.r.l. reserves the right to make modifications without prior notice.
Page 25
K-array s.r.l. unipersonale
Via Paolina Romagnoli - 50037
San Piero a Sieve (Firenze) - Italy
tel. +39 055 8487222 - fax. +39 0558487238
e-mail: info@k-array.com
www.k-array.com
UMC053AB01EN
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