he AD-C820 uses custom designed transducers and crossover networks, in combination with an acoustically optimized enclosure (AD-C800BB). These loudspeakers continue the AD Series philosophy of bringing natural and accurate sound quality combined with versatility and reliability to high-ceiling applications. This assembly includes the coentrant transducers, a 70V/100V transformer and a crossover mounted on an ABS baffle, as well as the backbox (AD-C800BB.

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Product Description

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 to 18 kHz
52 Hz to 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
Continuous power handling 3
Recommended amplifier 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 Volume AD-C800BB: 18 liter (0.64 ft³) 18 liter (0.64 ft³)
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)

Additional Information



Product Type

Loud Speakers


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