QSC AD-C821R AcousticDesign 8-Inch Ceiling Speaker System

When you need a ceiling-mounted speaker capable of high output, look no further than QSC’s AD-C821R. This 8-Inch Ceiling Speaker System is specifically designed for music playback, public address, and distributed audio. This fully integrated, sealed system utilizes specially-designed transducers and crossover networks.

Maintain an accurate frequency response even in 70/100V applications with the speaker’s low-loss, low-saturation transformer. The AD-C821R measures 91dB sensitivity (1W/1m). It produces 114 dB SPL (1W/1m) output at full power.

The AD-C821R assembly includes the co-entrant transducers, a 70V/100V transformer, and a crossover mounted on an ABS baffle. The speaker’s 8" woofer is equipped with a treated paper cone on a steel frame. It achieves 52 Hz via its optimized enclosure. The system achieves 90-degree axisymmetric coverage, and its high-current, low-tolerance network components provide smooth full-range, passive performance.

The AD-C821R comes with a “dog-ear” mounting system. Its conduit cover plate can be removed to access its locking 4-pole Euro-block connector; this connector accepts up to four 18AWG pairs, eliminating the hassles of star topology wiring designs.

More about QSC’s AcousticDesign Series

Easy installation, flexible mounting options, and rugged, high-weather resistance are just three of the features that set QSC’s AcousticDesign™ series apart. These premium loudspeakers are designed to give contractors and integrators versatile, reliable solutions for permanent sound installations. Unified by premium audio quality and consistent tonal characteristics this series is comprised of ceiling, surface, and pendant alternatives ideal for environments where you need the perfect combination of performance, coverage, and aesthetic appeal.

QSC AD-C821R Features

• 8" low-frequency woofer
• 1.4" diaphragm compression driver
• 200 watt continuous power rating
• 70V/100V multi-tap transformer included (system can operate in distributed or low-impedance mode)
• AD-C821 designed as a fully integrated blind-mount system

• AD-C821 loudspeaker system1
• AD-C800RG round grille1
• Tile rail set1
• C-ring set1

• Low-Frequency Transducer8" ferrite woofer
• High-Frequency Transducer1.4" neodymium compression driver
• Frequency
  • Frequency Response (-6dB): 61Hz - 18,000Hz
  • Usable Frequency Range (-10dB): 52Hz - 18,000Hz
• Output
  • Calculated Peak Output: 120 dB SPL
  • Calculated Continuous Output: 114 dB SPL
• Nominal Coverage90° horizontal and vertical
• Nominal Impedance16Ω
• Power Rating
  • RMS Power Handling: 200 W
  • Recommended Max. Amp: 400 W
• Sensitivity91 dB SPL, 1W/1m
• Bass Loadingported
• Transformer Typecustom low distortion laminated core, wide bandwidth design
• Transformer Taps
  • 100V: 16Ω bypass, 100W, 50W, 25W
  • 70V: 16Ω bypass, 100W, 50W, 25W, 12.5W
• Dimensions
  • Diameter: 13.4"
  • Depth: 11.9"
• System Weight16 pounds