Table of Contents
Advertisement
Warranty
For a copy of the QSC Limited Warranty, visit the QSC Audio Products website at www.qsc.com
Introduction
Congratulations and thank you for your ceiling loudspeaker purchase. The AD-C81Tw model
offers excellent acoustic performance in an easy-to-install and attractive package. Please
review these instructions carefully and follow the recommendations. Consult a licensed
installation professional if you are uncertain about any mounting issues.
The AD-C81Tw models feature a 8" low frequency (LF) driver in a ported enclosed. The
AD-C81Tw is equipped with an audio transformer suitable for 70V and 100V distributed
systems, as well as a tap-selector switch which can bypass the transformer for 8 ohm
applications. The AD-C81Tw also includes a bypassable 120Hz low pass filter.
What's Included
Loudspeaker cabinet
Protective grill assembly
two Support brackets for suspended ceiling installations
C-ring bracket for suspended ceilings and other ceiling reinforcing applications
Self-tapping screws (M 4.2 X 1.4 X 10 mm ) for securing the C-ring-to-support brackets
Grill clip used for clipping the plastic grill retaining lines together
Euro style connector assembly for connecting signal and daisy-chaining
Paint shield
Grille cloth
Installation Options
The AcousticDesign in-ceiling loudspeakers can be mounted in suspended ceilings, as well as non-suspended types. W e recommend an
installation professional be consulted for safety assurance, quality installation, and optimum acoustic performance.
For suspended ceiling applications, the suspended ceiling support brackets must be used with the C-ring bracket. The suspended ceiling support
brackets are designed to accommodate 24" or 600 mm t-channel grid spacing. The brackets do not attach to the t-channel; the angled "V" bend
sits over the t-channel and will catch the t-channel in the event of a tile failure or fall-out.
For other ceiling types, the C-ring bracket can be used to reinforce the mounting surface. If the ceiling is suitably strong, the loudspeaker can be
secured in the cutout hole without additional reinforcement.
Audio connections are made directly to the ceramic terminal block or by using terminal block type connectors. Two sets of terminals are provided;
one set for the signal connection and another for pass-through (or daisy chain) connection to other loudspeakers on the same distribution circuit.
Two safety features are provided, an enclosure-retaining safety tab and a grill-retaining safety tether. The enclosure tab is a metal tab near or on
top of the enclosure suitable for securing the loudspeaker to building framing; this provides maximum safety in the event the ceiling structure fails
for any reason. The grill's safety tether prevents the grill from failing in the event it should vibrate loose.
TD-000264-00-E
3
— Figure 1 —
Advertisement
Table of Contents
