Meyer Sound M'elodie, Operating Instructions Manual

7

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).

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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