Meyer Sound Amie-Sub, Руководство по эксплуатации

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CHAPTER 2: POWER REQUIREMENTS
13
WIRING AC POWER CABLES
Amie-Sub ships with a gray powerCON 20 cable mount
connector, rated at 20 A, for assembling AC looping cables
(Figure 8). The pins on the powerCON 20 cable mount
connector are labeled as follows:

L (Line)

N (Neutral)

PE (Protective Earth or Ground)
How AC power cables are wired is determined by the type
of AC power distribution system used (see “AC Power
Distribution” on page 11). When wiring AC power cables for
single-line systems, use one of the wiring schemes shown in
Figure 9 and described in Table 2:
CAUTION: When wiring AC power cables and
distribution systems, it is important to preserve
AC line polarity and connect the earth ground at both
ends of the cable. Amie-Sub requires a grounded
connection. Always use a grounded outlet and plug.
It is extremely important that the system be properly
grounded to operate safely and properly. Do not
ground-lift the AC cable.
VOLTAGE REQUIREMENTS
Amie-Sub operates as intended when receiving AC voltage
within the following range:

90–264 V AC, 50–60 Hz
If the voltage drops below 90 V, the loudspeaker uses
stored power to continue operating temporarily; the
loudspeaker powers off if the voltage does not return to its
operating range.
If the voltage rises above 275 V, the power supply could
become damaged.
CAUTION: The power source for Amie-Sub
should always operate within the required oper -
ating range, at least a few volts from the upper and
lower limits. This approach ensures that AC voltage
variations from the service entry—or peak voltage
drops due to cable runs—will not cause the loud
-
speaker’s amplifier to cycle on and off or cause dam -
age to the power supply.
CURRENT REQUIREMENTS
Current draw for loudspeakers is dynamic and fluctuates as
operating levels change. Because different cables and
circuit breakers heat up at varying rates, it is important to
understand the following types of current ratings and how
they affect circuit breaker and cable specifications.

Idle Current — The maximum rms current during idle
periods.

Maximum Long-Term Continuous Current — The
maximum rms current during a period of at least
10 seconds. The maximum long-term continuous current
is used to calculate temperature increases for cables and
to ensure that the size and gauge of each cable
conforms to electrical code standards. This current
rating is also used to select appropriately rated, slow-
reacting thermal breakers, which are recommended for
loudspeaker power distribution. In addition, the
maximum long-term continuous current can be used to
calculate the AC looping capability for Amie-Sub
loudspeakers.

Burst Current — The maximum rms current during a
period of around 1 second. The burst current is used as
a rating for magnetic breakers. It is also used for
calculating the peak voltage drop in long AC cable runs
according to the following formula:
V pk (drop) = I pk x R (cable total)

Maximum Instantaneous Peak Current — A rating for
fast-reacting magnetic breakers.
Figure 8: powerCON20Cable Mount Connector
Figure 9: AC Wiring Scheme
Table 2: AC Wiring Scheme
Wire Color Attach to the
Following
Terminal
U.S. / Canada
60 Hz
European
50 Hz
Black Brown Hot or live (L)
White Blue Neutral (N)
Green Green and Yellow
Protective earth / ground
(E or PE)
L
N
PE
SIDE FRONT REAR
U.S./Canada, 60 Hz
Black ( L )
Europe, 50 Hz
Green ( E )
White ( N )
Brown ( L )
Blue ( N )
Green/
yellow ( E )
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