QSC AD-S802T – AcousticDesign 8-Driver Column Surface-Mount Loudspeaker (White) is backordered and will ship as soon as it is back in stock.
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Product Overview
The QSC AD-S802T is an eight-driver columnar surface-mount loudspeaker engineered for speech intelligibility in acoustically difficult commercial spaces. Part of the AcousticDesign Series, it serves lecture halls, atriums, transportation terminals, houses of worship, and government and education facilities.
Operating on 70V/100V distributed lines or an 8-ohm bypass, this white column loudspeaker uses QSC's PTT (Progressive Taper Topology) network to reduce side lobing and tighten vertical directivity where reverberation challenges clarity.
Product Description

The AD-S802T houses eight weather-treated 2.75-inch paper-cone transducers in a slim aluminum column. Its PTT network passively curves the array line to greatly reduce side lobes, delivering a rated 160° horizontal by 20° vertical coverage across a 90 Hz to 17 kHz effective frequency range with 87 dB sensitivity and a 113 dB peak SPL.
A low-loss, low-saturation transformer maintains accurate response on distributed lines with selectable 70V/100V taps plus an 8-ohm bypass, set on a rotary selector behind the sealed input cover. A locking 4-pole Euroblock with parallel output and a wire-sealing gland nut secures cabling, and the supplied quick-hang pan/tilt bracket reduces live-load time during high-reach installation, with a removable tilt section for close-to-wall placement and a zero-pan locking screw for wind-load conditions.
Powder-coated aluminum construction with stainless-steel hardware exceeds IEC60529 IP-54 for dust and splash resistance and is UL1480A certified; the enclosure is paintable to match decor. Intrinsic Correction voicings deploy via the Q-SYS Platform including CXD amplifiers, and complete EASE, CF2, CAD, and BIM data supports system design. For smaller spaces consider the QSC AD-S402T; for higher output and throw, the QSC AD-S162T.
Key Features
- PTT directivity control — Progressive Taper Topology curves the array passively to reduce side lobes and sharpen vertical control for clear speech in reverberant rooms.
- Eight-driver column array — Eight weather-treated 2.75-inch transducers form a tall, narrow vertical pattern for intelligibility-critical spaces.
- 70/100V operation with 8-ohm bypass — A low-loss transformer supports distributed audio plus a low-impedance bypass tap for amplifier-direct channels.
- Quick-hang pan/tilt bracket — A close-to-wall bracket with a removable tilt section and zero-pan locking screw reduces high-reach live-load time and supports wind-load installs.
- Sealed, secured wiring — A locking 4-pole Euroblock with a wire-sealing gland nut keeps moisture away from terminations and accepts conduit when required.
- IP54 aluminum construction — Powder-coated aluminum with stainless-steel hardware exceeds IEC60529 IP-54 and is UL1480A certified for indoor or outdoor use.
- Paintable, low-profile design — The unobtrusive enclosure and grille can be painted to match any decor.
- Q-SYS Intrinsic Correction ready — Optimized voicings deploy through the Q-SYS Platform including CXD Series amplifiers, with full EASE, CF2, CAD, and BIM data available.
Typical Applications
- Government space
- Commercial meeting space
- Multi-purpose room
- Training room
- Auditorium
- House of worship
Technical Specifications
| Specification | Detail |
|---|---|
| Configuration | 8-driver columnar surface-mount loudspeaker |
| Transducers | (x8) 2.75 in / 69.8 mm weather-treated paper-cone woofers |
| Effective frequency range | 90 Hz – 17 kHz |
| Rated noise power / voltage | 120 W / 31 V RMS |
| Sensitivity | 87 dB (rated @ 1 W, 1 m) |
| Coverage (-6 dB) H x V | 160° x 20° (rated) |
| Directivity factor / index | 15.9 / 12 dB |
| Maximum SPL | 107 dB continuous / 113 dB peak (1 m) |
| Recommended amplifier | 120 W |
| Transformer taps / impedance | 8-ohm bypass; 70V taps 7.5/15/30/60 W; 100V taps 15/30/60 W |
| Input connector | 4-pole Euroblock with parallel output |
| Enclosure / grille | Powder-coated aluminum |
| Ingress protection | IP-54 (IEC60529) |
| Operating temperature | -4 to 122°F / -20 to 50°C |
| Dimensions (H x W x D) | 23.4 x 5.2 x 5 in / 595 x 131 x 126 mm |
| Net weight | 13.7 lb / 6.2 kg |
| Safety agency | UL1480A; transformer UL1876, RoHS, CE |
| Included | Sealed input cover with gland nut, quick-hang pan/tilt bracket, shoulder eyebolt |
Competitor Comparison
| Criteria | QSC AD-S802T | Bose MA12EP | JBL CBT 50LA-1 |
|---|---|---|---|
| Format | 8 x 2.75 in passive column | Modular passive column (twelve 2 in) | Passive column array |
| Directivity | PTT-curved array for reduced side lobes | Articulated array for vertical control | Constant beamwidth technology |
| Coverage (rated) | 160° H x 20° V | Wide horizontal, controlled vertical | Selectable vertical coverage |
| Distributed audio | 70/100V with 8-ohm bypass | 70/100V with bypass | 70/100V capable with adapters |
| Weather rating | IP-54, UL1480A, outdoor-capable | IP55 weatherized | Indoor-focused (outdoor variants exist) |
| DSP ecosystem | Q-SYS Intrinsic Correction via CXD | Bose ControlSpace tuning | JBL/Crown processor tuning |
Frequently Asked Questions
Why choose a column loudspeaker like the AD-S802T?
Column arrays narrow vertical dispersion to direct sound at listeners rather than reflective floors and ceilings, improving speech intelligibility in reverberant rooms such as atriums, terminals, and houses of worship.
What transformer taps does the AD-S802T provide?
It offers an 8-ohm bypass plus 70V taps of 7.5/15/30/60 W and 100V taps of 15/30/60 W, selected on a rotary selector behind the sealed input cover.
Can it be installed outdoors and painted?
Yes. The powder-coated aluminum enclosure exceeds IEC60529 IP-54 and is UL1480A certified, and it can be painted to match decor for indoor or covered outdoor use.
What warranty and support come with this loudspeaker?
QSC installed loudspeakers are covered under QSC's standard limited warranty; refer to QSC's published warranty terms for the current coverage period applicable to this model. Creation Networks provides pre- and post-sale support for system design and integration questions.
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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