Overview

Make your voice (and music) heard

QSC's AD-S4T speakers are weather-resistant, so you can use them for background music and live paging of customers indoors or out. Each speaker mounts an efficient 4-1/2" woofer for detailed mids and a 3/4" silk tweeter that produces clear, detailed highs.

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Make your voice (and music) heard

They're versatile and wall-mountable, so you can get good coverage for your small business without disrupting your decor. These speakers feature multi-tap transformers for use with 70-volt or 100-volt commercial audio systems, while an 8-ohm bypass setting allows use with regular home audio receivers and amplifiers.

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Product highlights:

weather-resistant surface-mounted speakers with 4-1/2" woofer and 3/4" silk dome tweeter
handles up to 100 watts program power
120° conical coverage
frequency response: 68-20,000 Hz (-10 dB)
maximum SPL: 110 dB
sensitivity: 87 dB
8-ohm nominal impedance
multi-tap transformer for 70V or 100V systems
- 30, 15, 7.5, and 3.75-watt taps
- 8-ohm bypass setting for use with regular home audio receivers and amps
ABS polymer enclosure
paintable aluminum grille
mounting hardware included
6-3/8"W x 10-5/16"H x 6-7/16"D
weight: 6.5 lbs. (each)
warranty: 3 years
Our 60-day money-back guarantee
MFR # AD-S4T-WH

What's in the box:

QSC AD-S4T owner's manual

2 Surface-mount commerical loudspeakers
2 Euro-style connectors
2 Terminal weather protection covers
2 X-mount brackets
Eight M4 screws
Spec Sheet

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Details

Researched by Crutchfield's Russ B.

Features & specs

General
Drivers per speaker	2
Woofer Size (inches)	4.5
Tweeter Size (inches)	0.75
System Frequency response	---
Maximum SPL	110
Power Handling
Power rating	100
Peak Power rating	0
Specs
Width (inches)	6-3/8
Height (inches)	10-5/16
Depth (inches)	6-7/16
Weight	6.5 lbs

Product Research

Features

AcousticDesign Series: QSC's AcousticDesign series offers integrators a premium quality installed sound solution where performance, coverage, and aesthetics are paramount. Combined with unprecedented ease-of-installation and high weather resistance, the AcousticDesign series provides integrators a versatile and confident install solution.

Surface Mount Speaker: The QSC AcousticDesign AD-S4T is a surface mounted 70/100V, 4.5" two-way loudspeaker system, ideally suited for a wide variety of foreground and background sound reinforcement applications.

Note: The AD-S4T is sold in pairs.

Two-Way Driver Design: The AD-S4T features a high quality 4.5" weather treated paper cone woofer on a 1" voice coil. A carefully selected horn-loaded 0.75" silk dome tweeter with 0.75" voice coil perfectly matches the sensitivity and performance of the woofer for outstanding full-range reproduction.

DMT (Directivity Matched Transition): Consistent and even 120° axisymmetric (conical) coverage is achieved through DMT (Directivity Matched Transition), a QSC innovation which matches the directivity patterns of the woofer and the high-frequency waveguide at the crossover point. The result is a coherent transition between transducers and improved off-axis response.

70/100V or 8-Ohm: The even, accurate frequency response of the AD-S4T is aided by a 30-watt low-loss, low-saturation transformer with selectable taps, including an 8Ω bypass. To preserve weather resistance, the rotary selector is located on the back of the enclosure, protected by a weather grommet.

Euro-Style Connector: The Euro-style connector allows pre-wiring of the speaker and when combined with the quick "snap-on" deployment of the loudspeaker to the mount, installation is completed in a fraction of the time required versus competitive models.

Rugged Enclosure Rated for Indoor & Outdoor Use: With rugged ABS enclosures, sealed input panel covers, and powder-coated aluminum grilles for weather resistance, the AcousticDesign surface mounted series exceed IEC60529 IP-54 ratings for dust and splash resistance. The AD Series loudspeakers qualified for outdoor use using the following tests.

Salt Fog: MIL-STD-810G Method 509.5 for 100 hrs.
Humidity: MIL-STD-810G Method 507.5, Natural cycle B2, cyclic high RH for 7 days.
High & Low Temperature: Tested to QSC internal standards between -20° and 50° C.

X-Mount System: Installers will appreciate the award-winning X-Mount system included with each full-range AcousticDesign model. This ingenious mounting solution achieves unprecedented ease-of-installation in horizontal, vertical, wall, or ceiling deployments. Knurled surfaces at the pivot planes ensure the load will not drift or sag over time. Articulation marks allow pre-configuration of the X-Mount while on the ground with no special tools required. Once secure, the loudspeaker installs in seconds, allowing the installer to work safer, smarter, and faster.

Black or White Finish + Paintable: The AcousticDesign series feature a stylish appearance free of obtrusive logo adornments for aesthetically sensitive installations. AcousticDesign surface loudspeakers are available in QSC standard black or white, and may be painted to match any decor.