User manual

Electro-Voice EVA Series User Manual 33

6.4 Special Rules when Flying EVA-2151D Subwoofer Modules

EVA-2151D subwoofers may ONLY be ﬂown from an EVA-EG2 grid. Because the EVA-2151D modules

have six rigging points instead of four, the maximum load ratings are higher, but also require special condi-

tions to achieve. Please read, understand and observe the following:

1. When ﬂying EVA-2082S full-range modules below EVA-2151D subwoofer modules, the

maximum number of EVA-2151D modules is TWO and the maximum number of EVA-

2082S modules is FIVE. A bottom pull-up point may be used as long as the maximum

angle on the grid does not exceed 45° and the maximum pull angle between suspension

lines does not exceed 60°. Maximum single-point column weight when using EVA-2151D

subwoofers is 840 lb (381 kg).

2. When ﬂying EVA-2151D subwoofer modules as a stand-alone subwoofer array using the

center attachment point on the spreader bar(s), the maximum number of EVA-2151D mod-

ules is FOUR, even if two spreader bars are used. For extreme down angles, a second

EVA-EG2 grid may be attached at the bottom of the array for use as a pull-up point as long

as the maximum pull angle between suspension lines does not exceed 60°.

3. When ﬂying FIVE or more EVA-2151D modules, use only the two outermost attachment

holes on the spreader bar. If two spreader bars are used, the two outermost attachment

holes must be used ON EACH BAR. A maximum vertical column of EIGHT EVA-2151D

modules is permissible under these conditions if the column is kept perpendicular to the

ground. The maximum suspended column weight of EVA-2151D subwoofers in a stand-

alone subwoofer array with 0° of inclination (tilt) angle using both outer attachment points

on the spreader bar is 1,470 lb (667 kg). See Figure 24.

6.0 Rigging-Strength Ratings and Safety Factors (cont’)

Figure 24:

EVA-EG2 grid with more than (4) EVA-2151D’s in a straight (vertical)

array must use outer holes of spreader bar

Any Array with more

than (4) EVA-2151D’s

must use the two

outermost attach-

ment holes on the

spreader bar

Any Array with more

than (4) EVA-2151D’s

must use the two

outermost attach-

ment holes on the

spreader bar

NEVER ATTEMPT TO SUSPEND EVA SYSTEMS OVERHEAD BY ANY OTHER METH

OD THAN THE USE OF EVASG2, EVAEG2 OR EVACG GRIDS AND SPREADER

BARS AS OUTLINED IN THIS MANUAL! EVA1151D MODULES MAY BE SUSPEND

ED FROM INVERTED EVA1151D TIE PLATES ONLY IN CONJUNCTION WITH AN EVAGXB

SPREADER BAR SOLD SEPARATELY.