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Introduction
Congratulations and thank you for your ceiling loudspeaker purchase. The AD-C42T mod-
els offer 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-C42T models feature a 4" low frequency (LF) driver and a 3/4" dome high fre-
quency (HF) driver. The AD-C42T are 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.
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 terimainal block or by using Phoenix 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
supporting structure should fail.
Hardware Nomenclature
Suspended ceiling viewed from above.
(hardware may not be required for all installations)
- two loudspeaker cabinets
- two protective grill assemblies
- four support brackets for suspended ceiling installations
- two 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
- two grill clips used for clipping the plastic grill retaining lines together
- two phoenix connector assemblies for connecting signal and daisy-chaining
- two paint shields
- two grille cloths
Support Brackets
Existing Suspended
Ceiling "T-Bars"
C-ring Bracket
Screws
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