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CHAPTER 2
Self-powered and ultracompact, M’elodie combines
advanced loudspeaker technology with equally advanced
power capabilities. Understanding the loudspeaker’s power
distribution, voltage, and current requirements, as well as
electrical safety issues, is critical to the safe and correct
operation and deployment of M’elodie. M’elodie uses a
PowerCon
®
power connector with a loop output and com-
plies with worldwide product safety standards.
AC POWER DISTRIBUTION
All audio components (self-powered loudspeakers, mixing
consoles, processors, etc.) must be properly connected to
the AC power distribution, 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) cable(s).
NOTE: Improper grounding connections
between loudspeakers 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: Before applying AC to any Meyer
Sound self-powered loudspeaker, be sure
that the voltage potential difference between neutral
and earth ground is less than 5 V AC.
Figure 2.1 shows a sample three-phase AC distribution sys-
tem, with the load between loudspeakers distributed among
the three phases and all of the loudspeakers connected to
common neutral and earth-ground points.
Figure 2.1. A sample AC power distribution block diagram
LOOPING AND CABLING
M’elodie loudspeakers use a PowerCon 3-pole AC mains
system with locking connectors to prevent accidental
disconnection. Two female inlets (one colored blue and the
other gray) are provided. To loop units, simply attach a cable
from the gray connector of the first loudspeaker system to
the blue connector of the looped unit. (Figure 2.2).
Network
Service
Wink
Reset
Activity
Remote Monitor System
RMS3
Firmware
Looping Audio Input
10k Ω Balanced
Input Loop
AC LOOP OUTPUT
115/230V
~
50-60 Hz
10A RMS @115V
~
12.5A RMS @230V
~
Class 1 Wiring
!
AC INPUT RATING
115/230V
~ 50-60 Hz
5A RMS @115V
~
2.5A RMS @230V~
1500W BURST MAX
Figure 2.2. PowerCon input and loop out AC connectors
CAUTION: A 10-foot blue power connector
cable is provided with M’elodie loudspeak-
ers. This cable is rated for 15 amps. When using it,
do not loop more than two M’elodie loudspeakers
from the loop out connector when connected at
115 V, and not more than six when driven at 230 V.
CAUTION: If you replace the cable shipped
with the loudspeaker, ensure that you select
the correct power plug for the AC power in the area
in which you use the M’elodie loudspeaker. In addi-
tion, the connector must be rated for the load of all
the M’elodies looped to the same power plug.
TIP: A cable-mount gray loop out connec-
tor is provided with M’elodie loudspeakers
to make loop-out cables. Additional short looping
cables are available from Meyer Sound.
CHAPTER 2: POWER REQUIREMENTS
Blue Gray