





QSC AD-S4T 4.5", 2-Way Surface Mount Loudspeaker (2-Pack)
Condition: Like New
Open Box — New, unused gear. Original packaging has been opened, but the item has never been used.
Like New — Lightly used gear that appears brand new, with no visible signs of wear.
Very Good — Used gear with minimal cosmetic wear. Fully functional and well cared for.
Good — Fully functional gear with noticeable cosmetic wear from normal use.
Fair — Functional gear with significant cosmetic wear, such as major scratches or missing non-essential parts.
For Parts Only — Non-functional gear sold as-is. Suitable only for parts or repair; not operational.

QSC AD-S4T 4.5", 2-Way Surface Mount Loudspeaker (2-Pack)
Details
At A Glance
The QSC AD-S4T is a 2-way, surface-mount loudspeaker from the AcousticDesign™ Series, sold as a pair and suited for a wide range of foreground and background sound reinforcement applications. A weather-treated paper cone woofer on a 1" voice coil pairs with a 0.75" silk dome tweeter, while QSC's Directivity Matched Transition technology aligns the woofer and waveguide directivity at the crossover for consistent 120° conical coverage and improved off-axis response. A low-loss, low-saturation 30-watt transformer with selectable taps and an 8Ω bypass lets you run it on 70/100V distributed lines or low-impedance amplifiers without compromising tonal balance. IP-54 rated and designed for indoor and outdoor use, it's well suited for restaurants, retail, education, concourses, casinos, transportation terminals, worship facilities, and large-system fill.
Description
Features
Specifications
What's Included
The QSC AD-S4T is a 2-way, surface-mount loudspeaker from the AcousticDesign™ Series, sold as a pair and suited for a wide range of foreground and background sound reinforcement applications. A weather-treated paper cone woofer on a 1" voice coil pairs with a 0.75" silk dome tweeter, while QSC's Directivity Matched Transition technology aligns the woofer and waveguide directivity at the crossover for consistent 120° conical coverage and improved off-axis response. A low-loss, low-saturation 30-watt transformer with selectable taps and an 8Ω bypass lets you run it on 70/100V distributed lines or low-impedance amplifiers without compromising tonal balance. IP-54 rated and designed for indoor and outdoor use, it's well suited for restaurants, retail, education, concourses, casinos, transportation terminals, worship facilities, and large-system fill.