K-array KN10S - Manual (Page 12)

12
rev.A
KN6 - KN10S
8. AMPLIFIER
8.1 AC POWER CONNECTOR
8.2 VOLTAGE REQUIREMENT
8.3 CURRENT REQUIREMENT
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.
KN6/KN10S operates safely and without audio discontinuity if the AC voltage
stays within a operating window from 90 V to 260 V.
Check the voltage before connecting the amplifier to the AC power.
A higher voltage could seriously damage the device.
The KN6/KN10S presents 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 ap-
proximately 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.