EX2.5 USER GUIDE
P. 5
Make sure that even with the AC voltage drop, the AC
voltage always stays within recommended operating
ranges. The minimum electrical service amperage
required by a EX2.5 speaker system is the sum of each
loudspeaker’s maximum continuous rms current. An
additional 50 percent above the minimum amperage
is recommended to prevent peak volt-age drops at
the service entry.
The Power Connector
The EX2.5 requires a grounded outlet. It is very
important that the loudspeaker AC supply be prop-
erly grounded in order to operate safely and
correctly. Use the PowerCon AC cable-wiring diagram
on page 5 to create international or special-purpose
power connectors:
Current Requirements
Each EX2.5 requires approximately 15 Amps max at
115V AC for proper operation. This allows one EX2.5
to be powered from one 15 A breaker at 115 V and up
to 2 EX2.5 subwoofers at 230 V or 250V.
The EX2.5 presents a dynamic load to the AC mains,
which causes the amount of current to fluctuate
depending on quiet or loud operating levels. Since
different cables and circuit breakers heat up at
varying rates, it is essential to understand the types of
current ratings and how they correspond to circuit
breaker and cable specif cations.
The maximum long-term continuous current
consumption is the maximum rms current during a
period of at least ten seconds. It is used to calculate
the temperature rise in cables, in order to select a
cable size and gauge that conforms to electrical code
standards. It is also used to select the rating for slow-
reacting thermal breakers.
The burst current consumption is the maximum rms
current during a period of approximately one second,
used to select the rating of most magnetic breakers
and to calculate the peak voltage drop in long AC
cables according to the formula: V pk (drop)= I pk x R
(cable total).
The ultimate short-term peak current is used to select
the rating of fast reacting magnetic breakers. Use the
table below as a guide when selecting cable gauge
size and circuit breaker ratings for your operating
voltage.
AC Cable Color Coding
If the colors referred to in the diagram don’t corre-
spond to the terminals in your plug, use the following
guidelines:
Connect the blue wire to the terminal marked with a 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.
AC POWER REQUIREMENTS
CAUTION
: The EX2.5 requires a ground
connection. Always use a grounded outlet
and plug.
Current Draw
115 V Mode 230 V, 250V
Max. Long Term Continuous 15 A rms
7.5 A rms
Burst Current
22 A rms
11 A rms
Short Term Peak
60 A peak
30 A peak
GREEN / YELLOW
Power connector assembly
Power cable color coding
