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Products / Loudspeakers / AcousticDesign / Ceiling Mount
AcousticDesign™ Series
AD-C42T
 UL Mark
AcousticDesign AD-C42T
The AcousticDesign Series of installation loudspeaker
products from QSC Audio expands with the new
AD-C42T ceiling mount loudspeaker system. Designed
for background and general purpose audio playback,
the new AD-C42T is compact and acoustically matched
to the entire AD Series. Rated for 40 watts continuous
power handling and able to take up to 160 watt
peaks, the compact AD-C42T is suitable for a wide
variety of ceiling installations
The 4" woofer is equipped with a polypropylene
cone for protection in humid environments. The
driver features a synthetic rubber surround and in its
sealed enclosure is optimized to deliver useable low-frequency
extension below 70 Hz. The high frequency
device is a co-axial, post mounted 0.75" dome tweeter
with a titanium diaphragm and a cloth surround. The
coaxial post is mounted slightly off center in relation
to the low-frequency driver in order to lessen the
destructive interference often found with axisymmetric
post mounted coaxial systems. The conical dispersion
of the AD-C42T is 100° and sensitivity measures
88 dB SPL.
The baffle and mounting tabs are molded from high-impact
polystyrene. The rear enclosure is a heavy
gauge, powder coated steel. The attractive aluminum
grille is backed with an acoustically transparent white
cloth. On the rear of the enclosure is an input cup
that features a conduit attachment point plus an
additional knockout for daisy-chain wiring. Input signal
connection is made with a high temperature resistant
ceramic screw terminal for compliance with European
safety standards.
The AD-C42T is factory shipped with C-rings and tile
rails for installation. New construction rings (AD-NC4)
and mud rings (AD-MR4) are also available separately.
The AD-C42T is equipped with a 70/100 V transformer
with multiple taps and an 8 ohm bypass.
FEATURES
- 4" polypropylene cone woofer
- 0.75" titanium dome tweeter
- 40 watt continuous power handling, 160 watt peak
- 70/100 V multitap transformer with 8 ohm bypass
- C-ring and tile rails included
Package Includes:
2 qty. AD-C42T loudspeakers
2 qty. C-ring and tile rails
2 qty. Round grilles (white, paintable)
2 qty. Paint masks
2 qty Connector assemblies
| AD-C42T |
 |
SPECIFICATIONS |
AD-C42T |
| Configuration |
Compact 2-way, sealed enclosure |
Transducers
Low-frequency
High-frequency |
4" (10 cm) weather resistant, polypropylene cone woofer
0.75" titanium dome tweeter |
Frequency Range 1
Frequency Response (-6 dB)
Useable Frequency Range (-10 dB) |
72 Hz - 20 kHz
60 Hz - 20 kHz |
Maximum Output 2
Calculated Peak Output
Calculated Continuous Output |
110 dB SPL
104 dB SPL |
| Nominal Impedance |
8 ohms switchable |
Power Rating
RMS Power Handling3
Recommended Max Amp Power
|
40 W (100 hours IEC)
80 W RMS |
| Sensitivity |
88 dB, 2.83 V, 1 m, free space (4pi) |
TRANSFORMERS |
| Type |
Custom low distortion laminated core, wide bandwidth design |
| Taps |
70 V: 30, 15, 7.5, 3.8 W / 100 V: 30, 15, 7.5 W / 8 ohms selected by switch |
| Environmental |
Exceeds Mil Spec 810 for humidity, salt spray and dust;
IEC 60529 IP-X3 splash rating |
| Agency Rating |
Listed UL1480, UL2043 safe for use in air handling spaces;
Transformer is Listed UL1876; Compliant BS/EN 60849 safety standards |
ENCLOSURE |
| Material |
Injection molded, high impact polystyrene baffle on a steel enclosure |
| Finish |
White (paintable) |
| Grille |
Painted aluminum |
| Connectors |
Ceramic block or 4-pin Euro terminals in fire protective sub-chamber |
| Mounting Hardware |
Rails and C-ring for ceiling tile installation |
| Weight |
6.1 lb (2.7 kg) Net
18 lb (8.2 kg) (pair) Shipping |
| Available Accessories |
AD-MR4 / AD-NC4 |
1 All frequency ranges specified refer to measured free field response.
2 Calculated SPL at 1m, (free space, 4 pi), speaker operating at rated RMS power with pink noise within specified frequency range
3 Maximum input power tested in accordance with IEC 268-5 recommendations, 50 Hz - 20 kHz band limiting, 6 dB signal crest factor
Specifications subject to change without notice.
QSC and the QSC logo are registered trademarks of QSC Audio Products LLC in the U.S. Patent and Trademark office and other countries.
AcousticDesign is a trademark of QSC Audio Products, LLC. All other trademarks are the property of their respective owners.
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ACOUSTICDESIGN SERIES
DOCUMENTS
AD-C42T Specifications (PDF 181K)
User Manual (PDF 3MB)
HI-RES IMAGES
AD-C42T with grille
AD-C42T without grille
RESOURCES
Frequency Response
Enclosure Dimensions
SOFTWARE
EASE Address
EASE Address is a software that allows the modeling of acoustic sources, in particular distributed loudspeaker systems, in two dimensions. It allows the system designer to quickly develop a simple design for a ceiling loudspeaker system, while also allowing the easy and quick prediction of the system performance in a given hall.
CAD DRAWINGS
AD-C42T (DXF, zipped 245K)
ARCHITECT'S & ENGINEER'S SPECIFICATIONS
AD-C42T
ACCESSORIES
ADC-MR4: Mud ring bracket for installation of AD-C42T in sheetrock or plaster
(Pack of 6, FG-000234-00)
ADC-NC4: New construction bracket for installation of AD-C42T in sheetrock or other solid surfaces
(Pack of 6, FG-000235-00)
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