QSC AD-S4T-WH AcousticDesign Series 4.5-Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, White)
The QSC AD-S4T-WH AcousticDesign Series is a pair of 4.5-inch, two-way surface-mount loudspeakers designed for professional foreground and background music applications. Featuring a built-in transformer for 70V and 100V distributed audio systems, along with an 8-ohm bypass option, these speakers offer flexible integration into commercial sound installations.
Each loudspeaker combines a weather-treated 4.5-inch paper cone woofer with a 0.75-inch silk dome tweeter. QSC Directivity Matched Transition (DMT) technology delivers 120-degree conical coverage, while the rugged ABS enclosure and powder-coated aluminum grille provide durability for suitable indoor and covered outdoor environments.
Features
- Two-Way Speaker Design: Features a 4.5-inch weather-treated paper cone woofer and a 0.75-inch silk dome tweeter.
- 50W RMS Power Handling: Designed for foreground and background music in commercial audio environments.
- 70V, 100V, and 8-Ohm Compatibility: Includes a low-loss transformer with selectable taps and an 8-ohm bypass option.
- 120-Degree Conical Coverage: QSC DMT technology supports consistent sound distribution and improved off-axis response.
- Durable Construction: Features an ABS enclosure and powder-coated aluminum grille.
- Dust and Splash Resistance: Supplied specifications identify IP54 environmental resistance.
- Flexible Installation: Includes QSC X-Mount systems for horizontal or vertical mounting and adjustable speaker positioning.
- Protected Connections: Removable four-pole Euroblock input/thru connector is positioned beneath a sealed input cover.
Applications
The QSC AD-S4T-WH is suitable for background and foreground music in restaurants, retail stores, educational facilities, hospitality venues, worship spaces, transportation terminals, and other commercial sound environments.
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-S4T-WH from HDTV Supply?
HDTV Supply offers professional AV equipment for commercial audio installations. The QSC AD-S4T-WH combines flexible transformer operation, broad sound coverage, and a durable enclosure in a convenient two-speaker package. Contact our team for help confirming compatibility with your amplifier and installation requirements.
Ask a Question
Have questions about the QSC AD-S4T-WH loudspeakers, transformer tap settings, mounting options, or amplifier compatibility? Contact HDTV Supply Customer Service for assistance.
QSC AD-S4T-WH Specifications
| Speaker System | |
|---|---|
| Speaker Type | Passive, two-way surface-mount loudspeaker |
| Included Speakers | 2 (pair) |
| Power Handling | 50W RMS for 2 hours at low impedance, as specified in supplied data |
| Recommended Amplifier Power | 100W |
| Impedance | 8 ohms with transformer bypass |
| Transformer Wattage | 30W |
| Enclosure Type | Sealed |
| Transformer Taps | |
| 70V Operation | 30W, 15W, 7.5W, 3.75W; 8-ohm bypass option |
| 100V Operation | 30W, 15W, 7.5W; 8-ohm bypass option |
| Drivers | |
| High-Frequency Driver | 1 × 0.75-inch (1.91 cm) horn-loaded silk dome tweeter |
| HF Voice Coil | 0.75 inch (1.91 cm) |
| Low-Frequency Driver | 1 × 4.5-inch (11.43 cm) paper cone woofer |
| LF Voice Coil | 1 inch (2.54 cm) |
| Audio Performance | |
| Frequency Range | 68 Hz to 20 kHz (-10 dB) |
| Maximum SPL, Continuous | 104 dB |
| Maximum SPL, Peak | 110 dB |
| Sensitivity | 87 dB SPL |
| Coverage Angle | 120° conical |
| Directivity Factor (Q) | 6 |
| Directivity Index | 8 dB |
| Connectivity | |
| Input/Thru Connector | 1 × removable four-pole Euroblock speaker input/thru connector |
| Physical and Environmental | |
| Environmental Resistance | Dust, humidity, and water resistant; supplied specifications list IP54 |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Color | White |
| Mounting | Rear bracket point; supplied with X-Mount systems per product description |
| Construction Materials | ABS enclosure, aluminum grille, polymer components |
| Dimensions per Speaker | 10.27 × 6.42 × 6.34 inches (26.09 × 16.31 × 16.1 cm) |
| Weight per Speaker | 6.5 lb (2.9 kg) |
| Packaging Information | |
| Package Weight | 16.5 lb |
| Box Dimensions (L × W × H) | 15 × 10 × 10 inches |
Note: Confirm the final product color and technical specifications against the manufacturer's current documentation before publishing.
Manuals and Documentation
Refer to the manual for installation, wiring, transformer tap selection, and safety instructions. Use the datasheet to review product dimensions and technical specifications.
Q/A
Q1: What is the QSC AD-S4T-WH?
The QSC AD-S4T-WH is a pair of passive, two-way AcousticDesign surface-mount loudspeakers with 4.5-inch woofers and built-in transformers for distributed audio applications.
Q2: How many speakers are included?
This product is sold as a pair and includes two loudspeakers.
Q3: What is the power handling of the AD-S4T-WH?
The supplied specifications list 50W RMS power handling under a two-hour test condition at low impedance.
Q4: Does the AD-S4T-WH support 70V and 100V audio systems?
Yes. The built-in transformer supports both 70V and 100V distributed audio systems using selectable power taps.
Q5: Can these speakers operate at 8 ohms?
Yes. The supplied specifications identify an 8-ohm bypass option for operation without the transformer.
Q6: What transformer tap settings are available?
The supplied data lists 30W, 15W, 7.5W, and 3.75W for 70V operation, and 30W, 15W, and 7.5W for 100V operation. An 8-ohm bypass option is also listed.
Q7: What is the frequency range of these loudspeakers?
The specified frequency range is 68 Hz to 20 kHz at -10 dB.
Q8: What is the coverage angle of the AD-S4T-WH?
The supplied specifications list 120-degree conical coverage, supported by QSC Directivity Matched Transition technology.
Q9: Are the AD-S4T-WH speakers weather resistant?
The supplied specifications list IP54 environmental resistance. Check the manufacturer documentation for installation restrictions and the level of protection required for your specific environment.
Q10: What mounting system is included?
The product description states that QSC X-Mount systems are supplied to support flexible speaker positioning and horizontal or vertical installation.
Q11: What applications are suitable for the QSC AD-S4T-WH?
These loudspeakers are intended for foreground and background music in restaurants, retail spaces, educational facilities, hospitality venues, worship spaces, and other commercial audio environments.
Q12: What drivers are used in the AD-S4T-WH?
Each speaker uses a 4.5-inch weather-treated paper cone woofer and a 0.75-inch horn-loaded silk dome tweeter, according to the supplied specifications.
Q13: Can the AD-S4T-WH be mounted horizontally or vertically?
The supplied product description states that the X-Mount system supports horizontal or vertical installations. Follow the manufacturer's instructions for approved orientations and secure mounting.
Q14: What amplifier power is recommended for the AD-S4T-WH?
The supplied specifications list 100W as the recommended amplifier power. Confirm amplifier compatibility and the correct speaker operating mode using the QSC documentation.
Q15: Where can I find the QSC AD-S4T-WH manual and datasheet?
Both documents are linked in the Manuals tab of this product page. Consult them for installation guidance, wiring, transformer settings, and technical details.
Warranty Information
The QSC AD-S4T-WH is an AcousticDesign loudspeaker. Please contact HDTV Supply or QSC to confirm the applicable warranty coverage for this product and the terms associated with your purchase.
Keep your proof of purchase and consult the manufacturer's current warranty documentation for coverage conditions and any registration requirements.
Customer Reviews
Check the Reviews section on this product page for available customer feedback about the QSC AD-S4T-WH AcousticDesign loudspeakers.
Product Videos
Check this section for available product demonstrations, installation guidance, or other videos related to the QSC AD-S4T-WH loudspeakers.
Videos Hide Videos Show Videos
-
QSC AD-S4T-WH AcousticDesign Series 4.5 Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, White)
Learn more or order now: https://www.hdtvsupply.com/qsc-ad-s4t...
-
QSC AD-S4T-WH AcousticDesign Series 4.5 Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, White)
Visit: https://www.hdtvsupply.com/qsc-ad-s4t-wh-acousticdesign...
