QSC AD-S4T – AcousticDesign 4.5-Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, White)
QSC AD-S4T – AcousticDesign 4.5-Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, White) is backordered and will ship as soon as it is back in stock.
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QSC AD-S4T – AcousticDesign 4.5-Inch 2-Way 50W Surface-Mount Loudsp...
Product Overview
The QSC AD-S4T is a white pair of 4.5-inch two-way surface-mount loudspeakers supplied with X-Mount brackets for horizontal, vertical, wall, or ceiling installation. Voiced for consistency across the AcousticDesign range, these surface loudspeakers run on 70/100V distributed lines or 8-ohm circuits in foreground and background music applications.
Product Description
This QSC AD-S4T pair combines a 4.5-inch weather-treated paper-cone woofer with a 1-inch voice coil and a 0.75-inch silk dome tweeter on a DMT waveguide for even 120-degree conical coverage and improved off-axis response. Each loudspeaker handles 50W RMS with a peak maximum SPL of 110 dB and a stated frequency range of 68 Hz to 20 kHz (-10 dB). The rugged ABS enclosure exceeds IP54 ratings for dust and splash resistance, and a low-loss 70/100V transformer with 8-ohm bypass plus a sealed 4-pole Euroblock connector support reliable AV system integration. The award-winning X-Mount system installs at a range of angles with no slippage over time.
Key Features
- X-Mount installation — The supplied X-Mount brackets allow horizontal, vertical, wall, or ceiling mounting at a range of angles without slippage.
- 120-degree DMT coverage — The DMT waveguide delivers even 120-degree conical coverage with improved off-axis response.
- IP54 protection — The enclosure exceeds IP54 ratings for dust and splash resistance in exposed installations.
- 70/100V or 8-ohm operation — A low-loss transformer with 8-ohm bypass supports distributed and low-impedance systems.
- Sealed Euroblock input — A 4-pole Euroblock under a sealed input cover protects terminals from moisture.
- Intrinsic Correction ready — Voicing filters are available through Q-SYS processing or CXD amplifier platforms.
Typical Applications
- Commercial meeting space
- Multi-purpose room
- House of worship
- Training room
Technical Specifications
| Specification | Detail |
|---|---|
| Type | 4.5-inch 2-way surface-mount loudspeaker |
| Quantity | Pair (2) |
| Woofer | 4.5-inch weather-treated paper, 1-inch voice coil |
| Tweeter | 0.75-inch silk dome on DMT waveguide |
| Coverage | 120-degree conical |
| Frequency range | 68 Hz – 20 kHz (-10 dB) |
| Power handling | 50W RMS |
| Peak SPL | 110 dB |
| Operation | 70/100V or 8-ohm bypass |
| Protection | Exceeds IP54 |
| Connector | 4-pole Euroblock |
| Color | White |
Frequently Asked Questions
Can the AD-S4T be mounted outdoors?
It exceeds IP54 ratings for dust and splash resistance, suiting exposed and semi-protected areas; consult QSC ratings for fully outdoor exposure.
Does it support 70V distributed audio?
Yes. It includes a 70/100V transformer with an 8-ohm bypass tap for low-impedance use.
How does the X-Mount system work?
The supplied X-Mount bracket allows horizontal, vertical, wall, or ceiling mounting at a range of angles with no slippage over time.
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
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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.
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