The QSC AD-S402T-WH Columnar Surface-Mount Loudspeaker (White) is a passive, full-range column loudspeaker designed to deliver clear, intelligible sound in indoor and outdoor environments. Featuring four 2.75-inch treated paper cone drivers, it supports distributed audio systems with selectable 70V/100V transformer taps and a 16-ohm bypass.
The AD-S402T-WH is ideal for transportation terminals, courthouses, lecture halls, and other spaces where vocal intelligibility and controlled sound coverage are essential.
Its IP54 rating provides protection against dust and water splashes, while the powder-coated aluminum enclosure, weather-treated cones, UV inhibitors, and stainless-steel hardware support demanding installation environments.
QSC's proprietary Directivity Matched Transition (DMT) technology helps provide consistent sound coverage and directivity control.
With a frequency range of 110 Hz to 20 kHz, a maximum SPL of 111 dB peak, and selectable transformer taps, this speaker is suitable for a variety of commercial sound reinforcement applications.
The locking 4-pole Euroblock connector, weather-sealing input cup, and included close-to-wall pan/tilt mounting bracket simplify installation.
QSC AD-S402T-WH Features
- Four 2.75-inch treated paper cone drivers for full-range sound reproduction
- Selectable 70V/100V transformer taps with a 16-ohm low-impedance bypass
- IP54-rated, powder-coated aluminum enclosure with weather-treated cones and UV inhibitors
- Close-to-wall pan/tilt mounting bracket, locking Euroblock connector, and weather-sealing input cup included

QSC Certified Expertise
Knowledgeable Support for QSC Products
HDTV Supply has QSC Level 1 certified expertise. Our team has completed QSC Level 1 Training, demonstrating foundational knowledge of the QSC platform, including system design, hardware and software, programming, and troubleshooting.
This training helps us provide knowledgeable product guidance when customers are selecting and deploying Q-SYS solutions. When you purchase Q-SYS products from HDTV Supply, you are working with a team that understands the Q-SYS platform and can help you make informed product and system decisions.
Why Buy the QSC AD-S402T-WH from HDTV Supply?
HDTV Supply offers QSC professional audio solutions for commercial sound installations. Contact our team for help selecting products for your application.
Questions? Call 833-WOLFPACK or visit HDTV Supply.
Ask a Question
Have questions about the QSC AD-S402T-WH Columnar Surface-Mount Loudspeaker? Contact HDTV Supply for assistance with product information and compatibility.
Call: 833-WOLFPACK
Website: HDTV Supply
QSC AD-S402T-WH Specifications
| Speaker | |
|---|---|
| Active/Passive | Passive |
| Number of Included Speakers | 1 |
| Speaker Configuration | Full-Range |
| Power Handling | 60W RMS |
| Recommended Amplifier Power | 120W RMS |
| 100V Transformer Taps | 30W / 15W / 7.5W or 16-ohm bypass |
| 70V Transformer Taps | 30W / 15W / 7.5W / 3.75W or 16-ohm bypass |
| Impedance | 16 Ohms |
| Transformer Wattage | 30W |
| Enclosure Type | Sealed |
| Drivers | |
| Full-Range Drivers | 4 × 2.75-inch / 6.99 cm paper cone drivers |
| Performance | |
| Frequency Range | 110 Hz to 20 kHz |
| Maximum SPL (Continuous) | 105 dB |
| Maximum SPL (Peak) | 111 dB |
| Sensitivity | 85 dB |
| Coverage Angle | 150° H × 35° V |
| Coverage at 500 Hz | 180° H × 90° V |
| Coverage at 1 kHz | 180° H × 80° V |
| Coverage at 2 kHz | 160° H × 46° V |
| Coverage at 4 kHz | 180° H × 28° V |
| Directivity / Q Factor | 11 |
| Directivity Index | 10.5 dB |
| Connectivity | |
| Inputs/Outputs | 1 × locking 4-pole block Euroblock input with loop-through |
| Physical and Environmental | |
| Ingress Protection | IP54 |
| Operating Temperature | -4°F to 122°F / -20°C to 50°C |
| Color | White |
| Mounting | Bracket mounting point; close-to-wall pan/tilt bracket included |
| Construction Materials | Aluminum, paper, and steel |
| Dimensions | 12.89 × 5.17 × 4.97 inches / 32.74 × 13.13 × 12.62 cm |
| Weight | 7.5 lb / 3.4 kg (without bracket) |
| Package Weight | 10.94 lb |
| Box Dimensions (L × W × H) | 21.5 × 12.25 × 9.5 inches |
QSC AD-S402T-WH Manuals
QSC AD-S402T-WH Questions & Answers
QSC AD-S402T-WH Warranty
QSC E Series, GX, RMXa, and PowerLight 3 amplifiers have a 3-year warranty under the applicable QSC warranty terms. For the AD-S402T-WH loudspeaker, please confirm the current warranty coverage with HDTV Supply or QSC before purchase.
Need assistance? Call 833-WOLFPACK.
QSC AD-S402T-WH Customer Reviews
Customer reviews and ratings can be viewed in this section when available. If you have purchased this product, share your experience to help other customers make an informed decision.
