QSC AD-C81Tw – AcousticDesign Ceiling-Mount Subwoofer System (White)
QSC AD-C81Tw – AcousticDesign Ceiling-Mount Subwoofer System (White) is backordered and will ship as soon as it is back in stock.
Shipping Availability*
Shipping Availability*
Free Ground Shipping on Most Orders Over $250.00
Looking for the best price or expert advice? Give us a call at 1-888-230-3661 or use the Live Chat below. Buying 1 or 100, you may qualify for greater savings beyond the advertised price.
QSC AD-C81Tw – AcousticDesign Ceiling-Mount Subwoofer System (White)
Product Overview
The QSC AD-C81Tw is an 8-inch ceiling-mount subwoofer system that supplements distributed audio with low-frequency extension and is acoustically matched to the AcousticDesign Series. It suits commercial spaces that need fuller low end from an in-ceiling system without floor-standing subwoofers.
Product Description
The QSC AD-C81Tw ceiling subwoofer uses an 8-inch polypropylene-cone woofer with a synthetic rubber surround and a large port for low-frequency extension below 40 Hz without undesirable port turbulence. It is rated for 100 watts continuous power handling with 400-watt peaks and includes a defeatable passive 120 Hz low-pass filter that can be bypassed from the front baffle for use with outboard crossovers. A 70/100V multi-tap transformer with 8-ohm bypass supports distributed and low-impedance systems, and the included C-ring and tile rails speed ceiling installation.
Key Features
- 8-inch polypropylene woofer — The polypropylene cone resists humidity and works with the large port for extension below 40 Hz.
- Defeatable 120 Hz filter — A passive 120 Hz low-pass filter is defeatable from the front baffle for use with outboard crossovers.
- 100W continuous handling — The system is rated for 100 watts continuous and 400-watt peaks for sustained low-frequency support.
- 70/100V multi-tap transformer — The transformer offers multiple taps with an 8-ohm bypass for distributed or low-impedance use.
- Tile-rail mounting — Included C-ring and tile rails with side cable entry speed ceiling installation.
Typical Applications
- Commercial meeting space
- Multi-purpose room
- House of worship
- Auditorium
Technical Specifications
| Specification | Detail |
|---|---|
| Type | 8-inch ceiling-mount subwoofer system |
| Woofer | 8-inch polypropylene cone |
| Power handling | 100 W continuous, 400 W peak |
| Low-frequency extension | Below 40 Hz |
| Filter | Defeatable passive 120 Hz low-pass |
| Transformer | 70/100V multi-tap with 8-ohm bypass |
| Mounting | C-ring and tile rails, side cable entry |
| Color | White |
Frequently Asked Questions
What does the AD-C81Tw add to a system?
It supplies in-ceiling low-frequency extension below 40 Hz to supplement AcousticDesign full-range ceiling speakers.
Can the internal filter be bypassed?
Yes. The passive 120 Hz low-pass filter is defeatable from the front baffle for use with outboard crossovers.
Does it support 70V distributed audio?
Yes. A 70/100V multi-tap transformer with an 8-ohm bypass is included.
What warranty applies?
Refer to QSC's AcousticDesign warranty terms or contact Creation Networks support for current coverage.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
CREATION NETWORKS — A PARTNER YOU CAN TRUST SINCE 2006
