12 JFL213 and JFL118 Loudspeakers
6.3.2
A Note On Eyebolts
Load-rated eyebolts are commonly used with threaded suspension points. Eyebolts used with
JFL213 and JFL118 loudspeakers must posses the following attributes:
•
Type: Shoulder
pattern
•
Thread Size:
M10 x 1.5
•
Shank Length:
Minimum 35 mm
•
WLL:
Minimum 740 kg / 1628 lb
CAUTION:
Eyebolt Working Load Limits are significantly de-rated when
angular lifts are applied. If an application requires an angular lift greater
than 45 degrees a swivel hoist ring or similar fitting must be used – see above Figure for an
example. These fittings have full swivel and pivot action, which helps avoids side loads.
6.3.3
Permanent Installation Overview
The JFL213, JFL210 and JFL118 enclosures may be suspended in a permanent installation
without the accessory FB221 Fly Bar. In these applications user-supplied M10 x 1.5 x 35 mm
forged shoulder eyebolts or load-rated equivalent are installed in an array’s top and bottom
enclosures. The top eyebolts are used for primary suspension and to set the array trim height,
while the bottom eyebolts are used as pullback points to set the array tilt angle.
The following instructions pertain specifically to eyebolt installation and array handling when
using said eyebolts. Join enclosures within an array by following the procedures described in
the accompanying FB221 Rigging & Ground Stack Instructions.
6.3.4
JFL213 Arrays
a. Using a 6 mm Allen wrench, remove the two (2) flat head screws from
the top panel of the uppermost array enclosure. These screws are im
mediately adjacent to the side Rigging Tubes – see Figure to right.
b. Thread two (2) user-supplied M10 x 1.5 x 38 mm forged shoulder
eyebolts through the exposed mounting points, making sure the eye
bolt 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 eye
bolts with user-supplied Screw Pin Anchor Shackles. Minimum
allowable Shackle size is 0.75 T, 9 mm / 0.31 in.
d. Hoist the array until the bottom array enclosure is at comfortable working height.
e. Using a 6 mm Allen wrench, remove the two (2) flat head screws from the bottom panel of
the lowest array enclosure.
f.
Thread two (2) user-supplied M10 x 1.5 x 38 mm forged shoulder eyebolts through the
exposed mounting points, again 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.
g. Attach the pull back 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.
h. Choose a target array tilt angle as guided by EAW Resolution. 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.
Содержание JFL118
Страница 1: ...OWNER S MANUAL JFL213 JFL118 LOUDSPEAKERS ...
Страница 2: ...2 JFL213 and JFL118 Loudspeakers ...
