QSC AD-S4T-BK AcousticDesign Series 4.5-Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, Black)
The QSC AD-S4T-BK is a pair of 4.5-inch, two-way AcousticDesign Series surface-mount loudspeakers designed for foreground and background music applications. Featuring an integrated transformer for 70V and 100V distributed audio systems, plus an 8-ohm bypass option, these speakers offer installation flexibility for commercial sound environments.
Each loudspeaker features a weather-treated paper woofer and a silk dome tweeter with a Directivity Matched Transition (DMT) waveguide for consistent 120-degree conical coverage. The rugged ABS enclosure, powder-coated aluminum grille, and weather-resistant design make the AD-S4T suitable for a range of indoor and appropriate outdoor installations.
Features
- Pair of passive, two-way surface-mount loudspeakers with 4.5-inch woofers and 0.75-inch silk dome tweeters
- 50W RMS power handling per speaker and up to 110 dB peak maximum SPL
- Integrated 70V/100V transformer with selectable wattage taps and 8-ohm bypass
- 120-degree conical coverage using QSC Directivity Matched Transition (DMT) technology
- Includes QSC X-Mount systems for flexible horizontal and vertical positioning
- Weather-treated woofer, rugged ABS enclosure, and powder-coated aluminum grille
- IP54-rated dust and splash resistance for suitable indoor and outdoor applications
- Four-pole removable Euroblock input/thru connector under a sealed input cover
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-BK from HDTV Supply?
HDTV Supply offers professional audio products for commercial installations, including QSC loudspeakers and accessories. The AD-S4T-BK is a flexible solution for distributed audio, background music, and foreground sound reinforcement in compatible commercial environments.
Ask a Question About the QSC AD-S4T-BK
Have questions about loudspeaker compatibility, transformer tap settings, mounting, or amplifier requirements? Contact HDTV Supply for assistance with your audio installation.
QSC AD-S4T-BK Specifications
| Speaker System | |
|---|---|
| Brand | QSC |
| Model | AD-S4T-BK |
| Product Type | Passive Surface-Mount Loudspeaker |
| Included Speakers | 2 (Pair) |
| Speaker Configuration | 2-Way |
| Enclosure Type | Sealed |
| Power and Transformer | |
| Power Handling | 50W RMS per speaker at low impedance, for 2 hours as specified |
| Recommended Amplifier Power | 100W |
| Transformer Wattage | 30W |
| 70V Transformer Taps | 30W, 15W, 7.5W, 3.75W, or 8-ohm bypass |
| 100V Transformer Taps | 30W, 15W, 7.5W, or 8-ohm bypass |
| Impedance | 8 ohms with transformer bypassed |
| Drivers and Audio Performance | |
| Low-Frequency Driver | 1 × 4.5-inch (11.43 cm) weather-treated paper woofer |
| LF Voice Coil | 1 inch (2.54 cm) |
| High-Frequency Driver | 1 × 0.75-inch (1.91 cm) horn-loaded silk dome tweeter |
| HF Voice Coil | 0.75 inch (1.91 cm) |
| Frequency Range | 68 Hz–20 kHz (-10 dB) |
| Maximum SPL | 104 dB continuous; 110 dB peak |
| Sensitivity | 87 dB SPL |
| Coverage Angle | 120° conical |
| Directivity Factor (Q) | 6 |
| Directivity Index | 8 dB |
| Connectivity and Installation | |
| Input/Thru Connector | 1 × removable four-pole Euroblock speaker connector |
| Mounting | Rear mounting point; supplied X-Mount system |
| Environmental Resistance | IP54 dust and splash resistance, as specified |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Physical | |
| Color | Black |
| Enclosure Material | ABS enclosure, aluminum grille, polymer components |
| Dimensions per Speaker (H × W × D) | 10.27 × 6.42 × 6.34 inches (26.09 × 16.31 × 16.1 cm) |
| Weight per Speaker | 6.5 lb (2.9 kg) |
| Package Weight | 16.5 lb |
| Box Dimensions (L × W × H) | 15 × 10 × 10 inches |
Specifications are based on the supplied product information. Confirm the latest details with QSC documentation before final system design.
Q/A
Q1: What is the QSC AD-S4T-BK?
The QSC AD-S4T-BK is a pair of passive, two-way 4.5-inch surface-mount loudspeakers from the AcousticDesign Series. It is designed for commercial foreground and background audio applications.
Q2: How many speakers are included?
The AD-S4T-BK package is specified as a pair, which includes two loudspeakers.
Q3: What is the power handling of each speaker?
Each speaker is rated for 50W RMS low-impedance power handling under the conditions specified by the manufacturer.
Q4: Can the AD-S4T-BK be used with 70V and 100V audio systems?
Yes. The built-in transformer supports 70V and 100V distributed audio systems with selectable wattage taps. It also offers an 8-ohm bypass option.
Q5: What transformer tap settings are available?
For 70V operation, the supplied specifications list 30W, 15W, 7.5W, and 3.75W taps. For 100V operation, they list 30W, 15W, and 7.5W taps. An 8-ohm bypass is also available.
Q6: What is the frequency response of the AD-S4T-BK?
The specified frequency range is 68 Hz to 20 kHz at -10 dB.
Q7: What is the speaker's coverage angle?
The AD-S4T provides a nominal 120-degree conical coverage pattern using QSC's Directivity Matched Transition (DMT) design.
Q8: Is the AD-S4T-BK weather-resistant?
The supplied specifications identify IP54 dust and splash resistance. Follow QSC's installation guidance and environmental limitations when using the speakers in exposed locations.
Q9: What mounting system is included?
The AD-S4T series is supplied with QSC X-Mount systems designed to support flexible mounting and aiming. Follow the manufacturer's instructions for secure installation.
Q10: What connectors does the AD-S4T-BK use?
It uses a removable four-pole Euroblock speaker input/thru connector located beneath a sealed input cover.
Q11: What applications are suitable for the QSC AD-S4T-BK?
Potential applications include background and foreground music in retail stores, restaurants, schools, worship facilities, casinos, transportation terminals, and other commercial environments.
Q12: Can the QSC AD-S4T-BK operate as an 8-ohm speaker?
Yes. The integrated transformer can be bypassed for 8-ohm operation. Select the correct configuration and amplifier settings according to the manufacturer's instructions.
Q13: What amplifier power is recommended for the AD-S4T-BK?
The supplied specifications list 100W as the recommended amplifier power. Ensure that the amplifier configuration, output, and speaker wiring are appropriate for the selected low-impedance or distributed-audio mode.
Q14: What are the dimensions and weight of each AD-S4T-BK speaker?
Each speaker measures approximately 10.27 × 6.42 × 6.34 inches and weighs 6.5 lb (2.9 kg), according to the supplied specifications.
Q15: Where can I purchase the QSC AD-S4T-BK loudspeaker pair?
You can contact HDTV Supply to inquire about purchasing the QSC AD-S4T-BK. For current availability, pricing, and shipping details, reach out to HDTV Supply Customer Service.
Warranty Information
Please contact HDTV Supply or QSC to confirm the applicable warranty coverage for the AD-S4T-BK loudspeaker pair and the terms associated with your purchase.
Customer Reviews
Customer reviews and ratings, when available, can be viewed in the Reviews section of this product page.
QSC AD-S4T-BK Product Videos
Check this section for product videos when available.
Videos Hide Videos Show Videos
-
QSC AD-S4T-BK AcousticDesign Series 4.5 Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, Black)
Learn more or order now: https://www.hdtvsupply.com/qsc-ad-s4t...
-
QSC AD-S4T-BK AcousticDesign Series 4.5 Inch 2-Way 50W Surface-Mount Loudspeaker (Pair, Black)
Visit: https://www.hdtvsupply.com/qsc-ad-s4t-bk-acousticdesign...
