JBL EVO1.324 - Manual (Page 20)

EVOi.324
18
I N S T A L L A T I O N
Overview
EVOi.324 has been designed to be permanently installed.
An eyebolt kit has been provided to facilitate suspension
from above: a ceiling, a beam or overhang. EVOi.324
weighs 65 pounds (29.5 Kg) and attaching this loudspeaker
to a surface is a task that should not be taken lightly.
Always consult a qualified person.
Suspension
WARNING !! Suspending this system should be done by
qualified persons following safe rigging standards. For
more information, please refer to the JBL Technical
Note Volume 1, Number 14 – Basic Principles for
Suspending Loudspeaker Systems.
Before suspending an EVOi.324, be sure to inspect all
components for cracks, deformations, corrosion, and/or
missing or damaged parts that could reduce the strength
and safety of the installation.
Perform all calculations to ensure that all components are
used within their rated work load before suspending an
EVOi.324. Remember the weakest component determines
the size and safety of the entire installation.
There are 3 suspension points on the top and bottom of
EVOi.324, two toward the front of the enclosure and one to
the rear. Pull tests at a certified test facility have docu-
mented non-catastrophic failure at 450 – 550 pounds for
each individual front suspension point and 1000 pounds for
the rear suspension point.
It is recommended that EVOi.324 be either suspended:
1. Equally from both of the front suspension points
together, or
2. From the rear suspension point, with the addition of a
safety cable to another suspension point.
For both recommendations, assuming a 7:1 safety factor,
the load on the suspension points should NEVER be greater
than 142.8 pounds (67.8 Kg).
For Example: Maximum Load Rating divided by EVOi.324
Net Weight = The number of speakers in a vertical array.
142.8 lb (67.8 Kg) / 65 lb (29.5 Kg) = 2.1
Therefore only two EVOi.324s may be used in a vertical
array if they are suspended from the points located on the
top of the enclosure in either recommendations 1 and 2
stated above.
Eyebolt Kit
Parts Included:
3
Shoulder Eyebolts
3 Washers
1 Suspension Advisory and Tech Note
Installing Eyebolts:
1. Remove suspension
placeholder screws.
2. Coat each eyebolt
with thread-locking
material (e.g., LocTite
#2 or equivalent).
3. Using the included
washers as stand-offs,
thread the eyebolts
into the open holes
and tighten.
Placeholder
Bolt
Eyebolt
Washer
Figure 25 - Remove
Placeholder Bolts
Figure 26 - Install Washers
and Eyebolts