QSC AcousticDesign AD-C81Tw Mode D'emploi page 4

Grill Safety Clip
The cabinet and the grill both have a small loop of
plastic line. The grill's loop has a clip attached.
Using the grill clip, attach the grill to the cabinet's
loop. This will help prevent the grill from falling
should it become detached.
Connections
Connect signal wires either directly to ceramic terminal block noting correct polarity or to
the supplied plastic terminal block assembly. When using the plastic terminal assembly,
connect the four pin receptacle to the ceramic block observing polarity. Connect the signal
wires to the screw terminals of one of the two pin plugs observing correct polarity. The
other two pin plug can then be used as pass through to daisy chain the signal to another
speaker or it can be left unused.
Other Recommendations and Important Information
•Grill removal: The grill can be removed by carefully prying around its outer edge or inserting a small, metal pin or hook into the
grill's openings and pulling evenly around its perimeter.
•If rattles or buzzing is heard during operation, it may be necessary to put vibration dampening material between the support
rails and the ceiling tiles and/or t-channels.
•The support rails have holes along their usable length to attach the C-ring bracket. This allows for the cutout to be placed in
many positions along the ceiling tile width.
All manuals and user guides at all-guides.com
Mounting Clamps
The mounting clamps are
part of the assembly for
simple use. Do not install
the grill until clamps have
been tightened and any
adjustments made.
Before inserting the cabi-
net into the mounting cut-
out, make sure the clamps
are folded in against the
cabinet, see 1, right.
After the cabinet is
installed into the mount-
ing cutout, tighten each
clamp's screw using a #2
Phillips screwdriver, see 2,
right.
The clamp rotates 90° and
is then pulled tight by the
screw, see 3, right.
Use the Secondary Support Tab!
Loudspeakers can potentially generate substantial vibra-
tion. In addition to ensuring all hardware is properly
installed and secured, you must use the secondary support
tab on the enclosure to secure the loudspeaker to an appro-
priate structural support. This will minimize the chance of
the loudspeaker falling from the ceiling in the event the pri-
mary mount fails. Any cable or wire used as a secondary
support line must be strong enough to support several times
the weight of the loudspeaker. Do not use rope, string,
twine or other textile-based line in the secondary support
system as it is easily cut or burned. The secondary support
attachment point and any fasteners used on the building's
structure must also be strong enough to support several
times the weight of the loudspeaker.