QSC AD-C6T 6.5" Ceiling Mount Loudspeaker - PAIR

  • $434.00

The QSC AcousticDesign™ AD-C6T is a 6.5" two-way ceiling loudspeaker ideally suited for a wide variety of foreground and background sound reinforcement applications which utilize 70/100V or 16O bypass configurations. 

The AcousticDesign™ Series offers integrators a premium quality installed sound solution where performance, consistent coverage, and aesthetics are paramount. Specifically designed to maintain a consistent tonal characteristic across the entire family in ceiling, surface, and pendant applications, the AcousticDesign series allows integrators seamless transitions within blended installations. 

The AD-C6T features a high quality 6.5" weather treated paper cone woofer with a 1" voice coil and a .75" aluminum dome tweeter which is positioned on a DMT waveguide. 

DMT (Directivity Matched Transition™) is QSC’s design philosophy where the high frequency waveguide is matched to the natural conical behavior of the woofer at the crossover point. The result is a coherent transition between transducers with improved off-axis power response for consistent 135° conical DMT coverage. 

The accurate frequency response of the AD-C6T is maintained even in 70/100V applications by use of a low-loss, lowsaturation 60-watt transformer with selectable taps, including 16O bypass, using a rotary selector located under the snap-fit magnetically attached powder coat steel grille. 

To retain lasting good looks, the rugged ABS baffle is further protected by using UV inhibitors that prevent discoloration and by a powder coated steel back can. The magnetic grille features a stick-on logo that can be removed blemish-free for installations where branding is not permitted. 

Installers will appreciate the 3x double stepped, long travel dog-ear blind mounting system, which captures from 0" - 2.25" of ceiling thickness. The conduit cover plate can be easily removed by losening the single captive Phillips screw allowing access to the locking 4-pole Euro-block connector which can accept up to four 18AWG pairs, eliminating the hassles of star topology wiring designs. 

Intrinsic Correction™ voicings that optimize performance and speed the install process are easily deployed via the Q-SYS Platforms, including CXD-Q Series amplifiers, as part of a complete QSC systems solution. 

The AD-C6T is available in QSC standard black (RAL 9011) or white (RAL 9010) and may be painted to match any decor.


  • Consistent tonal characteristics across the entire AcousticDesign™ family in both surface or ceiling applications
  • DMT (Directivity Matched Transition™) waveguide ensures smooth, uniform frequency response over the coverage area
  • Snap-fit magnetic grille
  • 3x double stepped, long travel dog-ear blind mount system
  • Advanced Intrinsic Correction™ voicings available via Q-SYS™ Ecosystem and CXD processing amplifiers
  • Low-saturation and low-loss 70/100V transformers with 16O bypass
  • Low-saturation and low-loss 70/100V transformers with 16O bypass
  • Blemish-free removable logo
  • Removable conduit cover plate, also available as accessory for pre-install wiring
  • UL1480 and UL2043 certified EN54-24 Type A


  • Effective Frequency Range: 60 Hz–20 kHz
  • Rated Noise Power/Voltage: 30 watts / 15.5 volts rms
  • Broad-Band Sensitivity: 86 dB SPL
  • Coverage Angle (-6 dB): 130° conical (500 Hz–5 kHz)
  • Directivity Factor (Q): 6
  • Directivity Index: 8 dB
  • Maximum Continuous SPL: 101 dB
  • Maximum Peak SPL: 107 dB
  • Rated Impedance: 8 ohms
  • Receommended Amplified Power: 60 watts into 8 ohms
  • Transformer Tap 1: 70V: 30, 15, 7.5, 3.7, 1.9 watts
  • Transformer Tap 2: 100V: 30, 15, 7.5, 3.8 watts
  • Transformer Bypass: 8 ohms
  • LF Transducer: 165 mm (6.5-inch) polypropylene woofer with 25mm (1-inch) voice coil
  • HF Transducer: 25-mm (1-inch) aluminium dome tweeter with 25mm (1-inch) voice coil
  • Input Connector Type: Euroblock connector with parallel output
  • Enclosure Material: UV treated, high impact ABS Polymer
  • Grille Material: Powder coated steel
  • Yoke Material: Powder coated steel with brass inserts
  • Ingress Protection: IP-44
  • Operating Environment: Designed for indoor use
  • Operating Temperature Range: -20 to 50° C (-4 to 122° F)


(2) C-Ring and tile rails
(2) Cut-out templates
(2) Grille
(2) Euroblock connectors