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KMT12/KMT18
46.5 cm
18.31"
10
KMT18
47.5 cm
18.70"
61 cm
24.02"
weight: 28 kg (61.73 lbs)
REV. A
8. AMPLIFIER
8.1 AC POWER CONNECTOR
The amplifier module and the rest of the audio equipment connected to it (mixing consoles, processors, etc.)
must be connected to the AC power distribution in a proper way, preserving AC line polarity and connecting
earth ground such that all grounding points are connected to a single node or common point using the same
cable gauge as the neutral and line(s) cables. Bad grounding connections between speakers and the rest of
the audio system may 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.
8.2 VOLTAGE REQUIREMENT
KMT12 and KMT18 operate safely and without audio discontinuity if the AC voltage stays within 85
and 135V or between 180 and 250V, at 50 or 60 Hz.
Verify that your mains connection is capable to satisfy the power ratings of the device.
Connecting the system to an AC power mains with a voltage exceeding 250V will
cause significant damage to the device and create a serious risk for users!
8.3 CURRENT REQUIREMENT
KMT12 and KMT18 present a dynamic load to the AC mains, which causes the amount of current to fluctuate
between quiet and loud operating levels. Since different cables and circuit breakers heat up at varying rates,
it is essential to understand the types of current ratings and how they correspond to circuit breaker and cable
specifications. The maximum continuous RMS current is the maximum RMS current in a period of at least
ten seconds. It is used to calculate the temperature increase in cables, which is used to select cables that
conform to electrical code standards. It is also used to select the cable size and gauge, and the rating for
slow-reacting thermal breakers. The maximum burst RMS current is the maximum RMS current in a period of
approximately one second. It is used to select the rating for magnetic breakers. The maximum instantaneous
peak current during burst is used to select the rating for fast reacting magnetic breakers.
For best performance, the AC Cable voltage drop should not exceed 10% at 115V and 5% at 230V.
REV. A
KMT12/KMT18
CAUTION
11
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