Page 10 of 18 RD0465(A) JFL SERIES OWNER’S MANUAL
5.5 USER ADJUSTMENTS
5.5.1 JFL210 HF Shading – Single-Amp Mode
The JFL210 has a switchable HF character while in single-amp mode, controlled by the three
position toggle labeled “HF Shading.” Each of the three positions is suitable for different
scenarios. Be sure to select the HF shading character most appropriate for the application when
using the JFL210 in single-amp mode:
•
Single Box
— This switch position provides an HF character that is suitable for use with
a single JFL210 that is not used in an array.
•
Multi Box
— This switch position provides an HF character that is suitable for use with
multiple JFL210s in an array in short to medium throw applications (approximately 1 m-
20 m).
•
Long Throw
— This switch position provides an HF character that is suitable for use with
multiple JFL210s in an array in long throw applications (approximately 20-30 m). Using
this switch position will maintain tonal balance at long distances by adding compensation
to those frequencies that suffer attenuation due to air loss. In an array where some
JFL210s are being used for short to medium distances and some are used for long
distances, it is appropriate to mix Long Throw and Multi Box settings as needed.
5.5.2 JFL210 HF Shading – Bi-Amp Mode
The single-amp HF shading toggle switch described in the preceding section is disabled when the
JFL210 is operated in bi-amp powering mode. HF shading functions are instead replicated in
DSP. Recommended settings are available on the EAW website. In an array where some
JFL210s are being used for short to medium distances and some are used for long distances, it
is appropriate to use multiple HF outputs in DSP to implement mixed shading.
5.6 AMPLIFIER POWER REQUIRMENTS
The performance of the JFL210 and JFL118 depends on amplifiers delivering an adequate supply
of clean power, as is true of all professional loudspeaker systems. For information on selecting
amplifiers, please consult the accompanying EAW Loudspeaker Owner’s Manual.
5.6.1 Power
Ratings
The JFL210 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.
Table 5.6.1
lists the rms voltage limits for the JFL210
and JFL118. Because of their higher impedance design, multiple JFL210s and JFL118s can be
powered from single amplifier 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 JFL210 and JFL118 loudspeakers.
