2x QSC AD-C6T-LP 6.5" Low Profile Ceiling Mount Loudspeaker

  • $450.00

The QSC AcousticDesign™ AD-C6T-LP is a 6.5" two-way low profile 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-LP 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-LP 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-LP is available in QSC standard white (RAL 9010) and may be painted to match any decor


  • Consistent tonal characteristics across the entire AcousticDesign family for surface, ceiling, and pendant 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
  • Intrinsic Correction™ voicings available via Q-SYS Platform including CXD-Q Series amplifiers
  • 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


  • LF transducer : 165 mm [6.5 in] weather treated paper cone woofer
  • HF transducer : 19 mm [.75 in] aluminum dome tweeter
  • Effective frequency range : 65 Hz – 20 kHz
  • Rated noise power / voltage: 60 watts / 31 volts (rms)
  • Sensitivity [dB]: Rated @1W, 1m : 88
  • Coverage (-6 dB) [°]: Rated : 135 conical DMT
  • Directivity factor : 6.5
  • Directivity index [dB]: 8
  • Maximum SPL [dB] : Rated (continuous / peak) 7 : 106 / 112
  • Recommended amplifier : 60 watts
  • Transformer taps / impedance : Bypass:16O; 7.5W (70V); 15W (100V) Tap: 667O; 15W (70V); 30W (100V) Tap: 333O; 30W (70V); 60W (100V) Tap: 167O; 60W (70V); N/A (100V) Tap: 83O
  • Input connector type : Euroblock connector with parallel output
  • Enclosure material : ABS baffle on powder coated steel back can
  • Grille material : Powder coated steel
  • Ingress protection : IP-34
  • Operating environment : Designed for indoor use
  • Operating temperature range : -20 to 50° C [-4 to 122° F]
  • Cutout dimension : Ø 305 mm [Ø 12 in]


(2) C-ring and tile rails
(2) Rail screws
(2) Euroblock connector
(2) Cut-out template
(2) Grille
(1) User's Manual

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