Introduction, What’s Included | QSC Audio AD-C81Tw specs

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:	- 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

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)

Support Brackets

Existing Suspended

Ceiling “T-Bars”

C-ring Bracket

Screws

AD-C81Tw specifications

The QSC Audio AD-C81Tw is a versatile and high-performance ceiling loudspeaker designed to meet the demands of a variety of commercial audio applications, such as retail spaces, corporate environments, and hospitality venues. With its sleek design and advanced technology, the AD-C81Tw delivers exceptional sound quality while blending seamlessly into any architectural setting.

One of the standout features of the AD-C81Tw is its 8-inch, low-frequency driver, which ensures impactful bass response and a well-balanced sound profile. The speaker also incorporates a high-frequency tweeter that delivers crisp, articulate highs, making it ideal for speech reinforcement as well as music playback. The coaxial design of the driver and tweeter allows for a streamlined installation process and optimum sound dispersion, providing even coverage across the listening area.

The AD-C81Tw is equipped with QSC's patented acoustic technology that enhances performance and reliability. The inclusion of a 70/100V transformer allows for flexibility in installation and makes it easier to reach long distances without losing audio quality. This feature is particularly useful in large venues where sound needs to be distributed uniformly.

Another key characteristic of the AD-C81Tw is its quick-install design. The speaker is engineered with a simple mounting system that minimizes installation time and complexity, making it a favorite among contractors and system integrators. The back can is built to fit standard ceiling cutouts, and its integrated mounting hardware ensures a secure fit in various ceiling types.

The QSC AD-C81Tw is also designed with durability in mind. Its robust construction, combined with weather-resistant materials, makes it suitable for both indoor and outdoor applications. This ensures longevity and consistent performance in different environmental conditions.

In addition to its acoustic performance, the AD-C81Tw features a modern, low-profile appearance that complements any decor. The grille can be painted to match the surrounding ceiling, allowing for unobtrusive integration into various spaces.

Overall, the QSC Audio AD-C81Tw stands out as a reliable choice for those seeking a high-quality ceiling speaker that combines great sound with user-friendly features and stylish design, making it a perfect fit for a wide range of audio installations.