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QSC AD-C81Tw AcousticDesign Ceiling Mount Subwoofer

The AD-C81Tw supplements a ceiling or surface-mount AcousticDesign system with low-frequency extension below 40 Hz, using an 8 inch polypropylene cone woofer with a synthetic rubber surround and a large port for output without turbulence. A built-in passive 120 Hz low-pass filter is defeatable from the front baffle for use with outboard crossovers.

The input cup is mounted on the side of the enclosure to cut down on the vertical clearance an installer needs, with a conduit attachment point and a knockout for daisy-chain wiring. It ships with C-rings and tile rails, and a 70/100V transformer with an 8 ohm bypass matches it into any distributed AD Series system.

LF Transducer8 in weather-resistant polypropylene cone woofer, rubber surround
Frequency Response (-6 dB)39 Hz - 184 Hz
Filter120 Hz low-pass, passive, bypassable
RMS Power Handling100 W (200 W recommended max amp power)
Sensitivity92 dB, 2.83V, 1m, free space
Transformer Taps70V: 60/30/15/7.5 W; 100V: 60/30/15 W; 8 ohm bypass
Net Weight20 lb (9.1 kg)
Included AccessoriesC-ring and tile rails; ADC-MRS mud ring and ADC-NCS new-construction bracket sold separately

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