Specifications

Community R2-Series Installation/Operation Manual — Page 21
MECHANICAL INSTALLATION
Using Safeties
For some applications, the installing contractor or professional engineer might deem necessary (or advisable)
that R-Series cabinets be installed with a secondary means of attachment such as a safety cable. In fact, some
local building codes and other regulations may require safety cables, chains or other secondary supports due to
seismic concerns, excessive wind loads, etc. Be aware that safety attachment points should not be located at
insert points on opposite sides of the cabinet in such a manner that they present a significant force that pulls the
insert points away from each other. All safety cables, chains, or other restraining hardware shall be installed so
that the line is taut and positioned to minimize dynamic loading (falling, bouncing, swinging, etc.) in the event
that the loudspeaker’s primary mount fails.
Community does offer in its catalog forged, rated eyebolts intended for rigging loudspeakers. However, these
eyebolts are not rated for outdoor use and the shank is too long for the threaded inserts on R.25 and R.5 loud-
speakers. Using an eyebolt with too long of a shank will not permit the eyebolt shoulder to properly seat against
the exterior of the cabinet. Installers will need to procure appropriate hardware made from the appropriate mate-
rial and shank length to meet the needs of each application.
In some cases, forged, overhead rated shoulder eyebolts may be used as attachment points on the cabinet for
safety cables with some restrictions. The eyebolt must be screwed in and firmly seated (do not over tighten) with
the shoulder of the eyebolt making contact with the rubber washer on the exterior of the cabinet. A rubber
washer shall be used between the eyebolt and the cabinet to maintain weather-resistance. Shims may be used
between the eyebolt and the rubber washer to position the eye so that it is in the same plane as the suspension
cable or chain. Care must be taken to ensure that the safety cable will not induce a load off-axis from the eye-
bolt’s threaded shank.
Hoist Rings provide a method of attachment which has advantages over eyebolts that permit more flexibility in
regard to the pull/load direction of the safety line, though at a higher cost. Hoist rings include a hinged “eye”
which allows the load applied to the cabinet threaded inserts to remain largely in shear, thus preserving the in-
tegrity of the insert point. The same precautions should be taken to properly seat the hoist ring as when seating
an eye bolt.
As with all aspects of mounting and rigging loudspeakers, the use of eyebolts, hoist rings, and other safety ca-
bling hardware should be included in a rigging plan approved by a professional engineer.
IMPORTANT: The mounting bolts that come installed in each R-Series enclosure must either be used to
mount the Accessory Mounting Yoke or they must remain in place. If the rigging fittings are not sealed,
air leaks will occur in the enclosure that will compromise the loudspeaker’s weather-resistance and its
low frequency performance.
IMPORTANT: Eyebolts and other mounting hardware for outdoor usage with R-Series loudspeakers
must be corrosion resistant steel properly rated for the load weight.