K-array Redline KMT21 Bedienungsanleitung
KMT21
USER’S MANUAL
English
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Contents
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1. INTRODUCTION 7
2. APPLICATIONS 7
3. KEY FEATURES 7
4. UNPACKING 8
5. WARRANTY 8
6. SAFETY 8
7. PHYSICAL 9
8. AMPLIFIER 10
8.1 AC POWER CONNECTOR 10
8.2 VOLTAGE REQUIREMENT 10
8.3 CURRENT REQUIREMENT 10
8.4 REAR PANEL 11
8.5 TOUCH SCREEN FUNCTIONS 13
8.6 AUDIO INPUT CONNECTOR WIRING 14
8.7 AMPLIFICATION AND PROTECTION CIRCUITRY 14
9. K-FRAMEWORK 15
9.1 SYSTEM REQUIREMENTS 15
9.2 INSTALLATION AND SETUP 15
9.4 USER TABS: 18
INPUT TAB 19
ROUTING TAB 20
DELAY TAB 20
OUTPUT TAB 21
10. SERVICE 22
11. SPECIFICATIONS 23
12. DECLARATION OF CONFORMITY 24
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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.
Warning! Dangerous voltages: RISK of electric shock.
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-specic 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
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1. INTRODUCTION
The K-array KMT21 is a full-featured audio system, featuring a 21” powered subwoofer, programmable on-board
DSP and multiple analog and digital inputs and outputs for creating a wide array of speaker congurations.
The KMT 21 features an integrated touch screen, providing intuitive control over the main DSP functions: input
/ output levels, signal routing, offset delays for subwoofer and speakon output (up to 12 ms., each) and overall
system delay (up to 330 ms.). All DSP functions, including EQ, can also be remote controlled via software over
USB or RS485 (3-pin XLR).
The KMT series provides two balanced analog line level inputs and a two-channel AES/EBU digital input. An
integrated class D amplier delivers 2 x 2000 W at 4Ω, with a max THD of 1% (EIAJ test @ 1KHz). The KMT21
features multiple analog and digital outputs, including a Speakon output to connect a wide array of passive
speakers including mid-high modules (KP52, KP102) or additional passive subwoofers (KMT21P). To optimize
performance, the on-board DSP includes up to 40 programmable presets. The rst 8 have been designed by
K-array, the additional 32 slots can be used to create, save, and store personal presets using the K-framework
software.
The KMT series’ unique four-corner port conguration provides symmetrical back loading to the speakers, for
extended bass response with very low distortion. The port conguration also provides incredible structural strength
to the cabinet, despite its light weight. Pocket handles and an M20 thread mount position for attaching mid-high
speakers makes the Redline series convenient to use and ideal for medium throw applications in theaters, concert
halls, and Audio/Video installations.
All KMT components are designed by K-array and custom-made under K-array’s quality control system.
2. APPLICATIONS
• Theatrical sound reinforcement
• Concert halls, clubs, houses of worship
• Portable and installed audio-visual systems
• Cinema and special effects
3. KEY FEATURES
• Unique performance-to-size ratio
• Direct radiating, long excursion driver
• Ultra fast set-up and dismantling system
• Fitted with integrated handles and castors
• Analog and digital AES/EBU inputs
• Remote software control over USB and RS485
• Optimized for use with KP52 / KP102, KMT21P
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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 inspect the shipping carton, then examine and test your new loudspeaker. If you nd any
damage, immediately notify the shipping company. Only the consignee may institute a claim procedure regarding
the system’s electronic equipment.
5. WARRANTY
K-array systems are warranted against manufacturing defects in materials or craftsmanship over a period of 2
years from the date of original purchase. During the warranty period K-array will, at its discretion, either repair or
replace products which prove to be defective provided that the product is returned in its original packaging, shipping
prepaid, to an authorized K-array service agent or distributor. K-array cannot be held responsible for defects caused
by unauthorized modications, improper use, negligence, exposure to inclement weather conditions, acts of God
or accidents, or any use of this product that is not in accordance with the instructions provided by K-array. K-array
is not liable for consequential damages. This warranty is exclusive and no other warranty is expressed or implied.
This warranty does not affect your statutory rights.
6. SAFETY
• Professional loudspeakers are capable of
producing extremely high sound levels and should
be used with care. Hearing loss is cumulative and
can result from extended exposure to levels in
excess of 90dB.
• Always use loudspeaker systems in a safe manner.
Never stand close to loudspeakers driven at high
volume.
• Only install the speaker in a location that can
structurally support the weight of the unit. Doing
otherwise may result in personal injury and property
damage.
• The system should only be suspended by qualied
personnel, following safe rigging practices. If
there is any doubt, seek professional help from
architects, structural engineers or other specialists
before proceeding.
• Do not operate the speaker for an extended period
of time if the sound is distorted. This is an indication
of malfunction, which can cause heat build-up and
result in a re.
• Only connect the power supply to an appropriate
power adapter.
• Do not install the speaker in wet or humid locations
without using weather protection.
• Do not allow water or any foreign object to get inside
the speaker. Do not put objects containing liquid on,
or near, the unit.
• To reduce the risk of overheating the amplier,
avoid exposing it to direct sunlight. Do not install the
unit near heat emitting appliances, such as a room
heater or stove.
• Never place open ame sources, such as lighted
candles, near the device.
• The speaker should be placed in a location that
does not interfere with its proper cooling.
• Do not attempt to disassemble the unit. The unit
contains no user-serviceable parts. Repairs should
be performed only by factory trained service
personnel.
• Be sure that the adapter has the correct voltage
value.
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7. PHYSICAL
55,5 cm 77,7 cm
55,5 cm
21,85” 30,59”
21,85”
weight: 49 kg (103.03 lbs)
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8. AMPLIFIER
8.1 AC POWER CONNECTOR
8.2 VOLTAGE REQUIREMENT
8.3 CURRENT REQUIREMENT
The amplier 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 KMT21 will operate safely, without interruption, provided the AC voltage remains within 85V- 268V, 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 270V. Doing so will
cause signicant damage to the device and create serious risk for users!
The KMT21 presents a dynamic load to the AC mains, drawing additional current as operating levels incre-
ase. 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 specications. 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. Maxi-
mum 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.
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