RD0465 (A) JFL SERIES OWNER’S MANUAL Page 15 of 18
Figure 6.3.7
Figure 6.3.5b
Figure 6.3.5a
6.3.5 JFL118
Arrays
a. Using a 6 mm Allen wrench, remove two (2) flat head screws
from the top panel of the uppermost array enclosure. These
screws are immediately adjacent to the
side
Rigging Tubes –
see
Figure 6.3.5a
. Do not remove the screw adjacent to the
single rear Rigging Tube.
b. Thread two (2) user-supplied M10 x 1.5 x 38 mm forged
shoulder eyebolts through the exposed mounting points,
making sure the eyebolt shoulders are firmly seated against
the enclosure. Orient each eyebolt so that the load will be
applied within the plane of the eye.
c. Attach the hoist mechanism and cables to the eyebolts with
user-supplied Screw Pin Anchor Shackles. Minimum allowable
Shackle size is 0.75 T, 9 mm / 0.31 in.
d. Hoist the array such that the bottom array enclosure is set to a
comfortable working height.
e. Using a 6 mm Allen wrench, remove the flat head screw
adjacent to the single rear Rigging Tube from the bottom
panel of the lowest array enclosure – see
Figure 6.3.5b
.
f. Thread one (1) user-supplied M10 x 1.5 x 38 mm forged
shoulder eyebolt through the exposed mounting point, again
making sure the eyebolt shoulder is firmly seated against the
enclosure. Orient the eyebolt so that the load will be applied
within the plane of the eye.
g. Attach the pull back mechanism and cable to the eyebolt with
a user-supplied Screw Pin Anchor Shackle. Minimum allowable Shackle size is 0.75 T, 9 mm
/ 0.31 in.
h. Choose a target array tilt angle as guided by
JFLWizard
software. Hoist the array to its
desired trim height using the front point. Once trim is achieved, use the rear point to set the
array tilt angle. See
Section 6.3.7
“Setting Array Tilt Angle” below for guidance.
6.3.6 Mixed JFL210 & JFL118 Arrays
Combinations of JFL210 and JFL118 Loudspeakers may be suspended in the same array. When
doing so JFL118s are always suspended above JFL210s.
a. Follow
Steps
a
through
d
in
Section 6.3.5
to first suspend JFL118 loudspeakers.
b. Join JFL210 loudspeakers to suspended JFL118 loudspeakers.
c. Follow
Steps
e
through
g
in
Section 6.3.4
to attach the array pull back mechanism.
d. Choose a target array tilt angle as guided by
JFLWizard
software. Hoist the array to its
desired trim height using the front point. Once trim is achieved, use the rear point to set the
array tilt angle. See
Section 6.3.7
“Setting Array Tilt Angle” below for guidance.
6.3.7 Setting
Array
Tilt
Angle
Normally the easiest method to determine array tilt angle is to use a
clinometer such as the simple, bubble-type angle finder pictured in
Figure
6.3.7
. More sophisticated, albeit more expensive, electronic clinometers
can also be used.
Place the angle finder against the grille of the uppermost array enclosure
that can be physically reached. Adjust the angle of the entire array so that
the face of this enclosure is set at its prescribed aiming angle given in the
JFLWizard
software.
