EAW JFL118, Руководство пользователя

Страница: 9 / 16

5.5.1 Power Ratings
The JFL213 requires one full range amplifier channel when operated in single-amp mode and
two amplifier channels – low frequency and high frequency – when operated in bi-amp mode.
The JFL118 requires only one amplifier channel. The table below lists the rms voltage limits for
the JFL213 and JFL118. Because of
their higher impedance design, up
to two JFL213s or multiple JFL118s
can be powered from single ampli-
fier channels.
NOTE: The rms Voltage Limit listed
for each sub-system (Full Range, LF,
HF, and SUB) is the same for any
enclosure quantity. The wattages are
calculated using the Voltage Limits
and the overall nominal impedance
for the each listed quantity of JFL213
and JFL118 loudspeakers.
CAUTION:
The rms voltage limits listed above are related to the thermal limits determined
from EAW’s standard power test. In this test, transducers are “exercised” to a point of damage
or failure. The test signal has a 6 dB crest factor (peak to average ratio). A maximum continuous
voltage limit for the loudspeaker is then determined based on the test results and on the trans-
ducer’s application in the loudspeaker. The powers listed in the table are calculated as the
square of the rms voltage limit divided by the sub-system’s nominal impedance (Z) in ohms.
5.6 INPUT CONNECTIONS
JFL213 and JFL118 loudspeakers utilize Neutrik® Speakon® STX Series connectors. The
STX Series’ all-metal housings are extremely rugged, and feature a built-in gasket providing
weather protection to IP54. Note that only the NLT4FX in-line cable connector will provide
rated protection against the elements.
5.6.1 JFL213 Input Connections
There are two Neutrik NLT4MP connectors on the rear of each JFL213. These connectors
mate with Neutrik NLT4FX, NL4FC, and all other NL4-compatible in-line cable connectors. The
following subsections describe the electrical connections for each operating mode.
5.6.1.1 Single-amp Mode
JFL213 INPUT NL4 x2; see right hand Figure.
NL4 #1: Use as the input to the JFL213.
NL4 #2: Use the second connector to loop the
full range signal to the next JFL213.
Note that an additional signal can be carried on pins 2 +/- without affecting the JFL213’s operation.
Owner’s Manual 9