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QSC AD-C81TW Ceiling Mount Subwoofer System (White)

Usually ships in 7-14 business days

Availability Details


This is a special order item and is non-cancelable and non-returnable. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $283.00
Product Highlights
  • 8" Polypropylene Cone Woofer
  • Large Port Area
  • Built-In Passive 120Hz Low-Pass Filter
  • 100 Watts Continuous Power Handling
  • 70/100V Multitap Transformer
  • C-Ring and Tile Rails Included
  • Side Cable Entry

The QSC AD-C81TW Ceiling Mount Subwoofer System (White) is designed to supplement audio systems with low-frequency extension--it's acoustically matched to the entire AD Series. The AD-C81TW is rated for 100 watts continuous power handling and can take up to 400-watt peaks.

The AD-C81Tw has an 8" woofer with a polypropylene cone for protection in humid environments. The driver has a synthetic rubber surround and works optimally with the large port to deliver excellent low frequency extension below 40 Hz without undesirable port turbulence.  It also features a built-in passive low pass filter set at 120 Hz. The filter is defeatable from the front baffle to allow the use of outboard crossovers. The AD-C81Tw is equipped with a 70/100V transformer with multiple taps and an 8-ohm bypass.

8" polypropylene cone woofer
Large port area for extended low-frequency performance
Defeatable passive 120 Hz low-pass filter with impedance compensation
100 watts continuous power handling, 400 watts peak
70/100 V multitap transformer with 8 ohm bypass
C-ring and tile rails included
Side cable entry
Configuration Ceiling subwoofer, ported
Woofer 8" (20 cm) weather resistant, polypropylene cone woofer, rubber surround
Frequency Range 39 Hz - 184 Hz
28 Hz - 208 Hz useable frequency range
Maximum Output Calculated Peak Output: 118 dB SPL
Calculated Continuous Output: 112 dB SPL
Nominal Impedance 8 ohms switchable
Power Rating 100 W
SPL 92 dB, 2.83 V, 1 m, free space (4pi)
Transformer Taps 70 V: 60, 30, 15, 7.5 W / 100 V: 60, 30, 15 W / 8 ohms selected by switch
Rating Listed UL1480, UL2043 safe for use in air handling spaces; Transformer is Listed UL1876; Compliant BS/EN 60849 safety standards
Connectors Ceramic block or 4-pin Euro terminals in fire protective sub-chamber
Dimensions Diameter: 12.6" (32 cm)
Depth: 14.5" (36.83 cm)
Weight 20 lb (9.1 kg) Net
QSC AD-C81TW Ceiling Mount Subwoofer System (White)
  • AD-C81Tw Loudspeaker
  • C-Ring and Tile Rails
  • Round Grille (White, Paintable)
  • Paint Mask
  • Connector Assembly
  • 3-Year Limited Warranty
  • Steren -  18-Gauge 2-Conductor Economy Speaker Wire, Clear - 1000' Spool
    • You Pay: $81.00

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