Eaw Resolution Results; Ground Stacking; Subwoofers In The Array; General Considerations - EAW JFL213 Owner's Manual

4.1.2 EAW Resolution Results

• Graphical representations of the array and the venue
• On-axis aiming angle for each enclosure as a difference from 0° horizontal
• Various angles and throw distances calculated from the venue's dimensions
• Difference between the array beamwidth angle and the needed coverage angles
• Height of the array and trim height to the bottom of the array from the floor
• Pick Point on the Fly Bar to achieve the calculated array angle when suspended
• Weight of the array
• Design Factor Tolerance
• Calculated Frequency Response
4.2

GROUND STACKING

Normally, a ground-stacked JFL213 main array is used where suspension is not possible, too
difficult, or too time-consuming. JFL213 – with or without JFL118 – are also quite effective
when used in stage side fill or audience front fill applications.
Both JFL213s and JFL118s may be ground-stacked alone or in combination. In combination, always
stack JFL213s on top of JFL118s. The recommended minimum and maximum array quantities are:
4.3

SUBWOOFERS IN THE ARRAY

4.3.1 General Considerations

Although the low frequency performance of JFL Series arrays allows them to be used without
subwoofers for some events, subwoofers will normally be used for live musical performances.
The recommended subwoofer is EAW's JFL118, specifically designed to complement JFL213
& JFL210 line arrays.
NOTE: Bass performance is often highly program - or venue - dependent, as well as subjective
as to quantity and quality. For this reason the type, quantity, and disposition of subwoofers
may vary considerably with the application. The quantity recommendations below are for gen-
eral purposes, providing a balanced system for most music applications. Quantities may need
to be adjusted up or down for specific situations.

4.3.2 JFL118 Subwoofers

JFL118 subwoofers are designed to complement the JFL213 & JFL210 loudspeakers to both
extend the low frequency response and provide more output for the upper low frequencies.
JFL118 subwoofers may either be ground stacked, flown as part of a JFL213 & JFL210 array, or
flown separately alongside a JFL213 & JFL210 array.
A general recommendation is to use JFL213 or JFL210s and JFL118s in a 2:1 ratio.
6 JFL213 and JFL118 Loudspeakers
WARNING: Ground-stacked arrays, especially the maxi-
mum recommended arrays, may present a tipping hazard
and require assembly by personnel qualified to ensure
adequate stability. See the FB221 Rigging & Ground
Stack Instructions for correct array assembly. Mechanical
assistance may be required to lift and position enclosures
for arrays taller than approx. 1.5m/5 feet.