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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 instal-
lation 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 dis-
tributed 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
Your ceiling loudspeaker box contains:
Installation Options
The AcousticDesign in-ceiling loudspeakers can be mounted in suspended ceilings, as well as non-suspended types. We 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 loud-
speaker can be secured in the cutout hole without additional reinforcement.
Audio connections are made directly to the ceramic teiminal 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 failling in the event it should vibrate loose.
Hardware Nomenclature
Suspended ceiling viewed from above.
(hardware may not be required for all installations)
- the loudspeaker cabinet
- the protective grill assembly
- two support brackets for suspended ceiling installations
- C-ring bracket for suspended ceilings and other ceiling reinforcing applications
- Self-tapping screws(M4.2 X 1.4 X 10mm) for securing the C-ring-to-support brackets
- grill clip used for clipping the plastic grill retaining lines together
- phoenix connector assembly for connecting signal and daisy-chaining
- paint shield
- grille cloth
Support Brackets
Existing Suspended
Ceiling "T-Bars"
C-ring Bracket
Screws
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