SPECIFICATIONS	AD-C820	AD-C821
Configuration	Passive
Low-frequency Transducer	8" (203 mm) ferrite woofer
Hight-frequency Transducer	1.4" (36 mm) neodymium compression driver
Frequency Range 1   Frequency Response (-6 dB)   Useable Frequency Range (-10 dB)	61 Hz - 18 kHz 52 Hz- 18 kHz
Maximum Output 2   Calculated Peak Output   Calculated Continuous Output	120 dB SPL 114 dB SPL
Nominal Coverage	90° horizontal and vertical
Nominal Impedance	16 ohms
Power Rating   RMS Power Handling3   Recommended Max Amp Power	200 W 400 W
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)
ENCLOSURE
Enclosure Volume	AD-C800BB: 18 L (0.64 ft 3)	18 L (0.64 ft 3)
Connectors	Back box (AD-C800BB): ceramic block connector inputs and “through” connectors (rated for 400 W max). Loudspeaker Baffle (AD-C820): 10-pin MATE-N-LOK™ connector and faston connectors.	Two 2-pin Euro-style connectors
Mounting Hardware	Pre-installed, suspended, back box, four vertical mounting straps. Loudspeaker Baffle: captive, integral Mounting Clamps.	Captive, integral Mounting Clamps. Insert enclosure into mounting hole, and tighten. Suspended ceiling Split-ring and Suspended Ceiling Tile Rails - sold separately.
Weight - Net	AD-C820: 8 lb (3.6 kg) AD-C800BB: 9.5 lb (4.3 kg) System Weight: 17.5 lb (7.9 kg)	16 lb (7.3 kg)
Dimensions	Diameter: 14.9" (379 mm) Enclosure only Depth: 8.3" (211 mm) Enclosure with mounting straps Depth: 11.2" (284 mm)	Diameter: 13.4" (340 mm) Depth: 11.9" (302 mm)