EAW JFL118, Руководство пользователя

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Owner’s Manual 7
4.3.3 Suspending JFL118 Subwoofers
The JFL118 enclosure rigging is designed to directly couple to an FB221 Fly Bar and JFL213
or JFL210 enclosures. As such, the JFL118 can be rigged seamlessly with JFL213 or JFL210s.
See the FB221 Rigging & Ground Stack Instructions for more detailed information on rigging
a JFL118.
The JFL118s should be the uppermost enclosures when flown as part of a JFL213 or JFL210
array. In this application, the JFL118s are suspended flat-fronted, with the JFL213 or JFL210s
suspended below in a constant curvature array. When flown separately, JFL118s should be
flown so that the spacing between the line of JFL118 enclosures and JFL213 or JFL210 en-
closures is less than 1 m / 3.3 ft.
4.3.4 Signal Delay on Subwoofers
If JFL118s are flown or stacked with JFL213 or JFL210s as configured in EAW Resolution, use
the factory signal delay settings.
For other configurations or subwoofers, it will usually be necessary to determine the signal
delay settings by measurement.
5. ARRAY OPERATION
5.1 OVERVIEW
The operation of a JFL Series system involves:
1. Understanding the principles on which it operates.
2. Knowing how to electronically configure it for a specific task.
5.2 ENGINEERING DESIGN
EAW Resolution software uses the fixed splay angle of the enclosure and the desired coverage
pattern to determine the quantity of enclosures in the array that will optimize coverage for the
audience distances and angles within the venue. The basic principle to remember is that more
enclosures provide greater vertical coverage and fewer enclosures provide less vertical cov-
erage.
5.3 SYSTEM BLOCK DIAGRAM
The JFL118 powering mode is single-amp only. The JFL213 has two powering modes: sin-
gle-amp and bi-amp. A JFL213 operated in single-amp mode only requires a high pass filter
for low frequency excursion protection. This may be implemented in a DSP (Digital Signal
Processor), equalizer, or amplifier with integrated high pass filter. The recommended filter is
60 Hz, 12dB Butterworth.
An EAW UX8800 or UX3600 Processor is required to operate the JFL213 in bi-amp mode or
to operate a JFL213 optimally in single-amp mode. A UX processor will operate a JFL213 in
bi-amp mode with a JFL118 subwoofer. A DSP with two outputs is required to operate the
JFL213 in single-amp mode with a JFL118 subwoofer.