Specifications

54
AcousticDesign™ Series
Ceiling Loudspeakers
Installed Sound
The AcousticDesign™ Series is a line of installation
loudspeakers designed for trouble-free operation and
versatility in a wide variety of applications ranging
from restaurants to retail and office spaces, houses
of worship, convention centers and transportation
settings. AcousticDesign loudspeakers offer natural and
pleasing sound reproduction with very low distortion
characteristics. The AD Series is comprised of two
product categories, the AD-C (in-ceiling) loudspeakers
and AD-S (surface mount) loudspeakers. Each is
designed to provide seamless sonic integration with
the other, allowing for mixed use in any installation.
AcousticDesign loudspeakers are supported in EASE
Address, providing systems designers the ability
to quickly and easily develop simple designs and
performance prediction for ceiling loudspeaker layout.
Designers can download a copy of the EASE Address
software from the QSC website at no charge.
AD-C42T
Designed for background music and general purpose
playback, the AD-C42T ceiling mount loudspeaker is
ideal for installations where a small, minimally intrusive
footprint is desired. Rated for 40 W continuous
(160 W peak) power handling, the AD-C42T features
a 4" polypropylene cone woofer combined with a
0.75" titanium diaphragm dome tweeter and offers
88 dB (1 W/1 m) sensitivity. The coaxial post is
mounted slightly off center in the low frequency driver
to minimize destructive interference and maintain
smooth, 100° conical dispersion. For maximum
flexibility, the AD-C42T also incorporates a 70/100V
transformer with multiple taps plus an 8Ω bypass for
low impedance operation.
The baffle and mounting tabs are molded from high-
impact polystyrene while the rear, sealed enclosure is
constructed from heavy gauge powder coated steel,
optimized to deliver usable audio output below 70 Hz.
The AD-C42T’s fascia features an attractive aluminum
grille backed with acoustically transparent cloth.
The input cup on the rear of the enclosure features
a conduit attachment point with an additional
knockout for daisy-chain wiring. The AD-C42T’s high-
temperature-resistant ceramic input screw terminal
complies with European safety standards.
The AD-C42T ships complete with C-rings and tile
rails; new construction rings (ADC-NC4) and mud
rings (ADC-MR4) are available as options.
AD-CI52T | AD-CI52ST
These high performance in-ceiling loudspeakers
deliver accurate, high-fidelity sound for foreground/
background music and paging systems alike. The
AD-CI52ST large-ported enclosure offers extended
low frequency response while its shallow depth is
ideal for installations with limited mounting space.
The AD-CI52T provides an even less-visually intrusive
option and the unit is fully sealed. A weather-resistant
5.25" transducer with a fiberglass cone, 25 mm voice
coil and rubber surround delivers the low frequencies
in both models, while the high-frequencies are
provided by a pure titanium 1" dome tweeter with a
neodymium magnet.
AD-CI52T and AD-CI52ST feature a custom, low
distortion, wide bandwidth transformer enabling both
models to be used on either 70/100V lines. The
transformer tap switch offers multiple output settings and
includes an 8Ω bypass for low impedance operation.
The AD-CI52T | AD-CI52ST | models ship complete
with C-rings and tile rails; new construction rings
(ADC-NC4) and mud rings (ADC-MR4) are
available as options.
LOUDSPEAKERS