CHAPTER 1: POWER REQUIREMENTS
The type, quality, and correct connection of the electrical system that will be used to supply
power to the Constellation system is very important. The effect of poor, inadequate, or low-quality
power will have a detrimental result in the sound quality of the system. The following information
is the Meyer Sound specification for proper powering of the various components of a
Constellation System.
Building Power
A dedicated transformer or a balanced power transformer of adequate size for the Constellation
system shall be attached to the building power system. The ground conductor of the transformer
will be connected directly to the ground used by the building’s main service transformer. All of
the ground wires of the Constellation electrical system will be joined at the dedicated transformer.
An uninterruptible power supply should be placed in-line with the output of the transformer. It
should be of adequate size and type to provide enough current for an appropriate amount of
time to continue to meet the systems power needs in the event of power disruption to the input
of the transformer. Check with your electrical engineer to properly size this transformer.
At the grounding point of the ISO transformer, the chassis ground, or mechanical ground, the
isolated ground, and the neutral buss will be connected. The chassis or mechanical ground will
connect the sub-panels, conduit, enclosures, racks, etc.
The neutral bus, through the distribution and sub-panels, will be connected to the neutral
terminal of all electrical sockets or the neutral connector of equipment.
The isolated ground will NOT be connected to any electrical panel, conduit, or any other
conductor EXCEPT for the ground connection to a piece of equipment through its power supply
cord or directly to the chassis of the equipment.
The chassis of equipment connected to the isolated ground system shall not have contact with
any material that is connected to the chassis or mechanical ground. This includes structural
steel, aluminum studs, and non-isolated racks.
No microphones, loudspeakers, Constellation processors, computers, monitors, termination
blocks, XLR connectors, or any other equipment associated with the Constellation system can
come in contact with any conductive material that is attached to any of the building’s chassis
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