QSC AD-S4T 50W RMS 4.5-Inch Indoor &…

QSC AD-S4T 50W RMS 4.5-Inch Indoor & Outdoor Surface-Mount Commercial Speaker Product Overview The QSC AD-S4T is a compact, high-performance 4.5-inch two-way surface-mount loudspeaker designed for professional commercial and architectural audio installations. Engineered by QSC, one of the industry’s most trusted professional audio manufacturers, the AD-S4T delivers exceptional speech intelligibility, balanced music reproduction, and reliable long-term performance in a discreet, weather-resistant enclosure. With 50W RMS continuous power handling , 100W program power , and 200W peak capability , the AD-S4T is an ideal solution for distributed audio systems requiring consistent sound coverage in retail stores, cafés, restaurants, hotels, offices, educational facilities, and hospitality venues. Its integrated 70V/100V transformer with low-impedance bypass provides maximum installation flexibility for both constant-voltage and traditional 8-ohm audio systems. Professional Power Handling & Output Performance The QSC AD-S4T is engineered for reliable daily operation in demanding commercial environments while maintaining clean, distortion-free sound. Power Specifications 50W RMS Continuous Power Handling 100W Program Power 200W Peak Power 8 Ohm Nominal Impedance (Transformer Bypass) Its efficient acoustic design allows the loudspeaker to reproduce both background and foreground music with excellent clarity while maintaining high speech intelligibility for paging and announcements. QSC recommends amplification up to approximately 100W for optimal performance. Indoor & Outdoor Compatibility Designed for permanent commercial installations, the AD-S4T features an IP54-rated enclosure that withstands challenging indoor and outdoor environments. Its weather-resistant construction and corrosion-resistant components ensure dependable performance in long-term installations. Ideal installation environments include: Retail stores Cafés and coffee shops Restaurants Hotels and resorts Corporate offices Educational facilities Museums Houses of worship Outdoor terraces Public venues The speaker’s compact dimensions make it particularly suitable where aesthetics and discreet installation are equally important. Acoustic Design & Sound Quality The AD-S4T utilizes a precision-engineered two-way acoustic design that provides natural music reproduction and excellent vocal clarity. Driver Configuration 4.5-inch weather-treated paper cone woofer 0.75-inch silk dome tweeter This driver combination delivers smooth frequency response, articulate vocals, and detailed high frequencies while maintaining balanced low-frequency performance for commercial music playback and speech reinforcement. Wide Coverage & Uniform Sound Distribution The AD-S4T features a 120° conical coverage pattern , allowing installers to achieve wide and even sound distribution with fewer loudspeakers. Benefits include: Uniform audio coverage Reduced coverage gaps Excellent speech intelligibility Fewer loudspeakers required for large areas Consistent listening experience throughout the venue Its wide dispersion makes the AD-S4T especially effective in open commercial spaces where even sound coverage is essential. Flexible Installation Options The integrated multi-tap transformer supports a variety of professional installation requirements. Installation options include: 70V distributed audio systems 100V distributed audio systems 8 Ohm low-impedance operation Vertical installation Horizontal installation Indoor and outdoor mounting The included QSC X-Mount™ mounting system allows quick installation while providing flexible aiming for precise sound coverage. Elegant Architectural Design Designed to complement modern commercial environments, the AD-S4T combines professional performance with clean architectural styling. Key design features include: Compact low-profile enclosure Modern architectural appearance Available in black or white UV-resistant painted ABS enclosure Powder-coated aluminum grille Professional mounting hardware included Its discreet appearance blends seamlessly into hospitality, retail, educational, and corporate environments. Durability & Reliability Built to QSC’s commercial standards, the AD-S4T is engineered for years of dependable service. Durability features include: IP54 weather-resistant construction Painted ABS polymer enclosure Powder-coated aluminum grille Corrosion-resistant mounting hardware Long-life driver components Designed for continuous commercial operation These features ensure reliable performance even in demanding indoor and outdoor installations. Versatile Application Scenarios The QSC AD-S4T is ideal for a wide variety of commercial audio applications. Retail Stores: Deliver consistent background music that enhances the customer experience. Restaurants & Cafés: Provide clear, evenly distributed music and announcements throughout dining areas. Hotels & Hospitality: Create premium ambience across lobbies, lounges, corridors, and outd