Ac Power Distribution; Voltage Requirements; Current Requirements - K-array OVERBASS Ko70 User Manual

2. AC POWER DISTRIBUTION

All amplifier modules 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.
CAUTION
In the connectors marked with this symbol there is a
dangerous high voltage. Wirings connected to these
connectors require installation by trained personnel or the
use of ready certificated cables.

3. VOLTAGE REQUIREMENTS

The Ko70 operates safely and without audio discontinuity if the AC voltage stays within either of two operating windows: 95-125 or
100-240 V, at 50 or 60 Hz.
WHEN YOU SWITCH ON THE UNIT:
The main power supply slowly ramps on t he green display on the user panel lights up, and the green leds on the left side lights
up flashing, indicating that the system is enabled and ready to process audio signals

4. CURRENT REQUIREMENTS

The Ko70 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 most magnetic breakers.
reacting magnetic breakers
For best performance, the AC Cable voltage drop should not exceed 10 Volts, or 10% at 115V and 5% at 230V.
The minimum electrical service amperage required by a system of Ko70 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.
USER'S MANUAL
CAUTION
If the Display does not illuminate or the system does not respond to
!
audio input after ten seconds, remove AC power immediately. Verify that
the voltage is within the proper range. If the problem persists please
contact HP Sound Equipment or an authorized service center.
NOTE
It is recommend that the supply be operated in the rated voltage windows, at
least a few volts away from the turn on/off points so that small AC voltage
variations do not cause the amplifier to cycle on and off.
The maximum instantaneous peak current during burst is used to select the rating for fast-
CAUTION
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.
CAUTION
!
When the unit is ready for use, after the installation,
the power AC switch should be easily accessible..
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