QSC AD-C6T-LPZB-WH – AcousticDesign 6.5-Inch Low-Profile Zero-Bezel Ceiling Speaker (Pair, White) is backordered and will ship as soon as it is back in stock.
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Product Overview
The QSC AD-C6T-LPZB-WH is a 6.5-inch two-way, low-profile, zero-bezel ceiling speaker from the AcousticDesign Series, sold as a white pair. This flush-mount commercial ceiling loudspeaker eliminates the visible grille ring of standard ceiling speakers for a trimless, near-invisible look in high-end architectural interiors, while running on 70V/100V distributed lines or a 16-ohm bypass. Its low-profile depth fits shallow ceiling plenums where standard-depth ceiling speakers will not install.
Product Description

The AD-C6T-LPZB pairs a 6.5-inch weather-treated paper cone woofer with a 0.75-inch aluminum dome tweeter on a DMT (Directivity Matched Transition) waveguide, producing a coherent 135-degree conical coverage pattern with even off-axis response. A low-loss 30-watt transformer offers selectable 70V/100V taps and a 16-ohm bypass, and Intrinsic Correction voicings deploy through the Q-SYS Platform, including CX-Q networked amplifiers. The 3x double-stepped dog-ear blind-mount system captures 0 to 2.25 inches of ceiling thickness, and the snap-fit magnetic grille carries a removable logo for branding-free installs.
Sharing the consistent tonal character of the AcousticDesign Series, the AD-C6T-LPZB blends with surface and pendant models in multi-zone designs. For smaller rooms or fill positions, see the QSC AD-C4T-LPZB-WH 4.5-inch ceiling speaker, or compare the standard-depth QSC AD-C6T-ZB-WH. A black-bezel finish is available with the AD-C305BG-BK black grille.
Key Features
- Zero-bezel trimless design — Flush, near-invisible ceiling appearance for premium architectural interiors.
- Low-profile depth — Overall height of about 3.95 inches fits shallow ceiling plenums.
- 6.5-inch two-way transducer set — Weather-treated paper cone woofer with a 0.75-inch aluminum dome tweeter on a DMT waveguide.
- 135-degree conical DMT coverage — Matched waveguide-to-woofer transition for uniform frequency response over the coverage area.
- 70V/100V with 16-ohm bypass — 30-watt transformer with selectable taps up to 60 W for distributed or low-impedance use.
- Intrinsic Correction ready — Optimized voicings deploy through the Q-SYS Platform and CX-Q amplifiers.
- Blind-mount dog-ear system — 3x double-stepped clamps capture 0 to 2.25 inches of ceiling thickness with a snap-fit magnetic grille.
- Plenum-rated safety listings — UL1480 and UL2043 certified for use in air-handling spaces.
Typical Applications
- Conference room
- Boardroom
- Commercial meeting space
- Multi-purpose room
- House of worship
- Government space
Technical Specifications
| Configuration | Passive 2-way, sold as a pair (white) |
| LF transducer | 165 mm (6.5 in) weather-treated paper cone, 1 in voice coil |
| HF transducer | 19 mm (0.75 in) aluminum dome tweeter on DMT waveguide |
| Effective frequency range | 65 Hz – 20 kHz (-10 dB) |
| Rated noise power / voltage | 60 W / 31 V (rms) |
| Sensitivity (1W/1m) | 88 dB |
| Rated coverage (-6 dB) | 135° conical DMT |
| Maximum SPL (continuous / peak) | 106 / 112 dB |
| Nominal impedance | 16 Ω (bypass) |
| Transformer taps | 70V: 60 / 30 / 15 / 7.5 W; 100V: 60 / 30 / 15 W; 16 Ω bypass |
| Connector | Euroblock with parallel output |
| Ingress protection | IP-34 |
| Cutout diameter | Ø 305 mm (12 in) |
| Dimensions (Ø x H) | Ø 340 x 100 mm (13.37 x 3.95 in) |
| Net weight (each) | 4.2 kg (9.3 lb) |
| Finish | White (RAL 9003) |
| Safety | UL1480, UL2043 |
Frequently Asked Questions
Is the AD-C6T-LPZB-WH sold individually or as a pair? It is priced and sold as a white pair; each quantity includes two loudspeakers.
What ceiling depth does the blind-mount system support? The 3x double-stepped dog-ear clamps capture 0 to 2.25 inches of ceiling thickness, and the low-profile back can fits shallow plenums.
Can it run on a 70V or 100V system? Yes. A 30-watt transformer provides selectable 70V and 100V taps up to 60 W, plus a 16-ohm bypass for low-impedance use.
Is a black grille available? Yes. The AD-C305BG-BK black grille is sold separately for installations requiring a black-bezel finish.
What about warranty and support? Coverage follows QSC's standard warranty terms. For current warranty details or design help, contact Creation Networks support.
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.
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