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Products / Loudspeakers / AcousticDesign / Ceiling Mount
AcousticDesign™ Series
AD-C81Tw
AcousticDesign AD-C81Tw
The AcousticDesign Series of installation loudspeaker
products from QSC expands with the new
AD-C81Tw ceiling mount subwoofer system.
Designed to supplement audio systems with
low-frequency extension, the new AD-C81Tw is
acoustically matched to the entire AD Series. Rated
for 100 watts continuous power handling and able to
take up to 400 watt peaks, the AD-C81Tw is a great
compliment to any of the ceiling mount or surface
mount AD Series models.
The 8" woofer is equipped with a polypropylene
cone for protection in humid environments. The
driver features a synthetic rubber surround and works
optimally with the large port to provide excellent low
frequency extension below 40 Hz without undesirable
port turbulence. This highly efficient design measures
92 dB SPL sensitivity.
The AD-C81Tw has a built in passive low pass filter set
at 120 Hz. The filter is defeatable from the front baffle
to allow the use of outboard crossovers.
The baffle and mounting tabs are molded from highimpact
polystyrene. The rear enclosure is heavy gauge,
powder coated steel. The attractive aluminum grille is
backed with an acoustically transparent white cloth.
The input cup is mounted on the side of the enclosure
to reduce the amount of vertical clearance necessary
to install the speaker. The input cup cover 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-C81Tw is factory shipped with C-rings and
tile rails for installation. New construction rings (ADCNCS)
and mud rings (ADC-MRS) are also available
separately. The AD-C81Tw is equipped with a 70/100 V
transformer with multiple taps and an 8 ohm bypass.
FEATURES
- 8" polypropylene cone woofer
- Large port area for extended low-frequency performance
- Defeatable passive 120 Hz low-pass filter with
impedance compensation
- 100 watts continuous power handling, 400 watts peak
- 70/100 V multitap transformer with 8 ohm bypass
- C-ring and tile rails included
- Side cable entry
Package Includes:
1 qty. AD-C81Tw loudspeaker
1 qty. C-ring and tile rails
1 qty. Round grille (white, paintable)
1 qty. Paint mask
1 qty Connector assembly
| AD-C81Tw |
 |
SPECIFICATIONS |
AD-C81Tw |
| Configuration |
Ceiling subwoofer, ported |
| Low-frequency Transducer |
8" (20 cm) weather resistant, polypropylene cone woofer, rubber surround |
Frequency Range 1
Frequency Response (-6 dB)
Useable Frequency Range (-10 dB) |
39 Hz - 184 Hz
28 Hz - 208 Hz |
| Filter |
120 Hz low pass, passive, bypassable |
Maximum Output 2
Calculated Peak Output
Calculated Continuous Output |
118 dB SPL
112 dB SPL |
| Nominal Impedance |
8 ohms switchable |
Power Rating
RMS Power Handling3
Recommended Max Amp Power
|
100 W (100 hours IEC)
200 W RMS |
| Sensitivity |
92 dB, 2.83 V, 1 m, free space (4pi) |
TRANSFORMERS |
| Type |
Custom low distortion laminated core, wide bandwidth design |
| Taps |
70 V: 60, 30, 15, 7.5 W / 100 V: 60, 30, 15 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 |
20 lb (9.1 kg) Net
28 lb (12.7 kg) Shipping |
| Available Accessories |
ADC-MRS Mud ring bracket • ADC-NCS New construction bracket |
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-C81Tw Specifications (PDF 223K)
User Manual (PDF 4.1MB)
HI-RES IMAGES
AD-C81Tw with grille
AD-C81Tw 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-C81Tw (DXF, zipped 450K)
ARCHITECT'S & ENGINEER'S SPECIFICATIONS
AD-C81Tw
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