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CHAPTER 2
The blue connector serves as the input for all the units
looped in that circuit and it is rated to 20 amps maximum.
Please make sure never to exceed 20 amps on any single
connector. Please refer to Table 2.1.
Table 2.1: Maximum looping capabilities for M'elodie
Circuit Breaker/
115 V AC
Connector Rating
15 amps
2 Looped-out
(3 Total)
20 amps
4 Looped-out
(5 Total)
CAUTION:
Do not exceed the current capa-
bility of the 20-amp M'elodie loudspeaker AC
connector. When looping always take into account
the current draw of all the speakers in the circuit,
including the first unit.
NOTE:
For best performance, the AC cable
voltage drop should not exceed 10 volts, or
10 percent at 115 volts and 5 percent at 230 volts.
POWER CONNECTOR WIRING CONVENTIONS
The M'elodie loudspeaker requires a grounded outlet. Use
the AC cable wiring diagram below (Figure 2.3) to create
power connectors.
Figure 2.3. AC cable color code
If the colors referred to in the diagrams don't correspond to
the terminals in your plug, use the following guidelines:
■ Connect the blue wire to the terminal marked with an N
or colored black.
■ Connect the brown wire to the terminal marked with an
L or colored red.
■ Connect the green and yellow wire to the terminal
marked with an E or colored green or green and yellow.
NOTE:
For units shipped with VEAM all-
in-one multipin connector, please refer to
Appendix B for AC Power pin out.
8
230 V AC
100 V AC
6 Looped-out
2 Looped-out
(7 Total)
(3 Total)
9 Looped-out
3 Looped-out
(10 Total)
(4 Total)
CAUTION:
When creating AC cables and
distributions systems it is important to pre-
serve AC line polarity and connect earth ground on
both sides of the cable. M'elodie loudspeakers re-
quire a ground connection. Always use a grounded
outlet and plug. It is very important that the system
be properly grounded in order to operate safely and
properly.
VOLTAGE REQUIREMENTS
When AC power is applied to the M'elodie loudspeaker,
the Intelligent AC power supply automatically selects the
correct operating voltage, allowing M'elodie to be used
internationally without manually setting voltage switches or
jumpers. In addition to selecting the operating voltage, the
Intelligent AC power supply performs the following protec-
tive functions to compensate for hostile conditions on the
AC mains:
■ Suppresses high-voltage transients up to several
kilovolts
■ Filters common mode and differential mode radio
frequencies (EMI)
■ Sustains operation temporarily during low-voltage
periods
■ Provides soft-start power-up, eliminating high inrush
current
The M'elodie loudspeaker operates safely and without au-
dio discontinuity if the AC voltage stays within either of two
operating windows at 50 or 60 Hz:
■ 85 to 134 volts
■ 165 to 264 volts
M'elodie can withstand continuous voltages up to 275 volts
and allows any combination of voltage to GND (that is neu-
tral-line-ground or line-line-ground).
CAUTION:
Continuous voltages higher than
275 volts can damage the unit.
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