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Supported Cable Gauges for the powerCON 32
While the powerCON 32 connector supports cable gauges
of 14–10 AWG (2.5–6.0 mm
10 AWG (6.0 mm
2
) should be used whenever possible.
LEO-M VOLTAGE REQUIREMENTS
CAUTION:
Due to its expanded power capabil-
ities, LEO-M was engineered to operate only at
220 V AC (208–235 V AC) to reduce current draw.
Make sure to use AC power cables with sufficient
gauge to operate with stable voltages during peaks
and that the AC power source is capable of providing
enough power.
LEO-M operates as intended when receiving AC voltage
within the following range:
■
165–264 V AC, 50–60 Hz
If the voltage drops below 165 V, the loudspeaker uses
stored power to continue operating temporarily; the loud-
speaker powers off if the voltage does not return to its oper-
ating range.
If the voltage rises above 275 V, the power supply could
become damaged.
CAUTION:
To ensure that LEO-M performs as
specified, without interruption, and without
damage to its power supply:
1. Its power source must operate within the required
voltage window (208–235 V AC).
2. Its AC cable length and gauge must be such that
peak voltage drops do not exceed 5 percent of its
voltage.
NOTE:
When voltage fluctuates within the
loudspeaker's operating ranges, automatic tap
selection stabilizes the voltage. Tap selection is
instantaneous with no audible artifacts, allowing con-
tinuous operation.
2
), due to LEO-M's current draw,
LEO-M CURRENT REQUIREMENTS
Current draw for loudspeakers is dynamic and fluctuates as
operating levels change. Since different cables and circuit
breakers heat up at varying rates, it is important to under-
stand 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, to
ensure that cable sizes and gauges conform to electrical
code standards. The current rating is also used as a rat-
ing for slow-reacting thermal breakers, which are recom-
mended for loudspeaker power distribution.
■
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 calcu-
lating 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.
■
Inrush Current — The spike of initial current encoun-
tered when powering on.
You can the following table as a guide for selecting cable
gauges and circuit breaker ratings for the system's operat-
ing voltage.
LEO-M Current Draw
Current Draw
230 V AC
Idle
0.6 A rms
Maximum Long-
6.0 A rms
Term Continuous
Burst
8.0 A rms
Maximum Instanta-
24 A peak
neous Peak
Inrush
<15 A peak
The minimum electrical service amperage required by a
loudspeaker system is the sum of the maximum long-term
continuous current for all loudspeakers. An additional
30 percent above the minimum amperage is recommended
to prevent peak voltage drops at the service entry.
LEO-M OPERATING INSTRUCTIONS
9
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