8-inch 2-way, 90° conical DMT™
• 8-inch low-frequency woofer
• 1.4-inch 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 is sold in the following system packages:
AD-C821R SYSTEM
• AD-C821 blind-mount loudspeaker system
• Split ring and tile rails
• AD-C800RG Round grille (white, paintable)

AD-C821S SYSTEM
• AD-C821 blind-mount loudspeaker system
• Split ring and tile rails
• AD-C800SG Square grille (white, paintable)

SPECIFICATIONS: AD-C821
• Configuration: Passive
• Low-frequency Transducer: 8-inch (203 mm) ferrite woofer
• Hight-frequency Transducer: 1.4-inch (36 mm) neodymium compression driver

Frequency Range 1
• Frequency Response (-6 dB): 61 Hz to 18 kHz
• Useable Frequency Range (-10 dB): 52 Hz to 18 kHz

Maximum Output 2
• Calculated Peak Output: 120 dB SPL
• Calculated Continuous Output: 114 dB SPL
• Nominal Coverage: 90° conical DMT™
• Nominal Impedance: 16 ohms

Power Rating
• Continuous power handling3: 200 W
• Recommended amplifier power: 400 W (loudspeaker  program  power)
• Sensitivity: 91 dB SPL, 1W/1m
• Bass Loading: Ported
• Transformer Type: Custom low distortion laminated core, wide bandwidth design

Transformer Taps
• 100 V: 16 ohms bypass, 100 W, 50 W, 25 W
• 70 V: 16 ohms bypass, 100 W, 50 W, 25 W, 12.5 W

Agency Rating
• CE, UL 1480 (commercial/professional use) UL 2043 (air handling spaces)

Mounting Hardware:
• Captive, integral Mounting Clamps. Insert enclosure into mounting
• hole, and tighten. Suspended ceiling Split-ring and
• Suspended Ceiling Tile Rails - sold separately
• Weight - Net: 16 lb (7.3 kg)

Dimensions
• Diameter: 13.4-inch (340 mm)
• Depth: 11.9-inch (302 mm)

QSC AD-C821 
Passive Speaker