QSC AD-S4T 4.5" Two-way surface speaker, 70/100V transformer with 8Ω bypass, 120° conical DMT™ coverage, includes X-Mount™ and weather input cup. Color - Black. Priced individually, sold only in pairs.

QSC AD-S4T AcousticDesign Series 4.5" 2-Way 50W Surface-Mount Loudspeaker (Pair, Black)

The QSC AD-S4T is a premium 2-way surface-mount loudspeaker system designed for high-quality foreground and background audio applications in both indoor and outdoor environments. Engineered for commercial installations, this speaker delivers clear, balanced sound performance with wide coverage and durable weather-resistant construction. Its compact design and versatile mounting system make it ideal for restaurants, retail stores, hotels, educational facilities, houses of worship, transportation terminals, and corporate spaces.

Features

• 4.5-inch weather-treated paper cone woofer
• 0.75-inch silk dome tweeter with horn-loaded design
• 50W RMS power handling
• 120° conical coverage pattern
• Maximum peak SPL of 110 dB
• 70/100V transformer with selectable taps and 8-ohm bypass
• QSC DMT™ technology for smooth and consistent sound coverage
• Durable ABS enclosure with powder-coated aluminum grille
• IP54-rated dust and splash resistance
• Includes X-Mount™ mounting system for flexible installation angles
• Suitable for indoor and outdoor commercial audio applications
• Euroblock input connector with sealed weather-resistant cover
• Compatible with Q-SYS™ Intrinsic Correction voicings

Specifications

• Speaker Type: 2-Way Passive Surface-Mount Loudspeaker
• Frequency Range: 68 Hz – 20 kHz
• Sensitivity: 87 dB SPL
• Maximum Continuous SPL: 104 dB
• Maximum Peak SPL: 110 dB