Products / Loudspeakers / AcousticDesign / Ceiling Mount

AcousticDesign™ Series
AD-C42T

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

Frequency Response | Enclosure Dimensions

SPECIFICATIONS	AD-C42T
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.

AcousticDesign Ceiling Mount Loudspeakers Click Here to see all the AcousticDesign models

AD-C81Tw	AD-CI52ST	AD-CI52T	AD-C42T

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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