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AcousticCoverage™ Series
AC-S4T
Small format, surface mount
loudspeaker
AC-S4T
Features
• High quality transducers provide
exceptional clarity through the
critical voice range.
• Improved musicality often
not seen in typical BGM class
products.
• Ported baffle for increased low
frequency extension down to
70 Hz.
• Low saturation 70/100V
transformers with 8 ohm bypass.
• 4-pole Euroblock connector
eases system wiring.
• Advanced voicing via QSC
Intrinsic Correction™, applied
using the Q-SYS™ Platform or
CXD Series amplifier platforms.
• Available in black (RAL 9011) or
white (RAL 9010)
• Complete EASE, CAD & BIM
information available online
Wide Area Paging ∙ Background Music ∙ Distance Conferencing
Reinforcement∙ Healthcare Facilities ∙ Concourses ∙ Transportation
Terminals ∙ Ancillary Support in Larger Systems
The QSC AcousticCoverage™ Series
AC-S4T is a surface mounted 4” two-way
loudspeaker with 70/100V transformer,
suitable for a wide variety of audio/video
conferencing reinforcement, voice paging
and background music applications.
AcousticCoverage
offer integrators a cost effective solution for
applications where voice reinforced
coverage is of primary concern, while
providing improved musicality often not
seen in typical BGM class products.
A high quality 100 mm [4 in] polypropylene
cone transducer with butyl rubber surround
and a 25 mm [1 in] aluminium dome
tweeter offers pristine clarity through the
critical vocal range for increased speech
intelligibility. With 130 degrees of conical
coverage, the AC-S4T reduces the number
of loudspeakers required for even coverage
in close proximity.
The UV treated high impact ABS enclosure
and ported baffle assembly has been
optimally tuned for added musicality,
creating low frequency extension down to
70 Hz. To maintain this frequency
response, the AC-S4T utilizes a 16-watt
low-saturation and low-loss 70/100V
transformer with varying selectable taps,
including an 8Ω bypass.
™
Series is designed to
To further enhance performance and speed
of install with optimum result, advanced
voicing via QSC Intrinsic Correction™
techniques are obtainable usingthe Q-SYS™
Platform and in CXD Series amplifiers
for a complete QSC systems solution.
Installers will appreciate the 4-pole
Euroblock connector for loop thru wiring,
located on the rear of the enclosure.
Eliminating the termination hassles of star
topology wiring designs, the generous
Euroblock of the AC-S4T can accept four
18AWG pairs.
The AC-S4T features brass inserts to
accept the included yoke mount and is
secured using the supplied thumb bolts.
The grille is adorned with a spring loaded
and rotatable logo for installation
convenience in either horizontal or
vertical deployments.
The AC-S4T is available in white (RAL
9010) or black (RAL 9011) to match
complimenting QSC product families.
The AC-S4T may also be painted to
match any décor.
To assist in successful systems integration,
complete EASE, CAD, and BIM files are
available for download online.
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AC-S4T Details
1k 10 k
10 0
Fre quen cy (Hz)
50 0 2k 5k 20 k
40 0
30 0
20 0
70
50
Horizontal
Beamwidth (-6 dB) (deg)
Vertical
10 0 1k 10 k
10 0
90
80
70
60
50
10 0
80
60
40
20
0
Fre que nc y (H z)
Sound Pressure, Level (dB)
Impedance, Amplit ude (ohm)
20 50 20 0 50 0 2k 5 k 20 k
95
85
65
55
90
70
30
10
Frequency Response (Raw)
Frequency Response (Intrinsic Correction™)
Impedance (8 Ohm Bypass)
B
C
D
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION
WHICH IS THE PROPERTY OF QSC AUDIO PRODUCTS, THAT
MAY NOT BE DISCLOSED, REPRODUCED OR USED WITHOUT
EXPRESS WRITTEN CONSENT FROM QSC AUDIO PRODUCTS.
Beamwidth: Impedance / Frequence Response:
Dimensions: Specifications:
166 mm
[6.5 in]
230 mm
[9.1 in]
160 mm
[6.3 in]
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174
© 2016 QSC, LLC all rights reserved. QSC and the QSC logo are registered trademarks of QSC, LLC in the U.S. Patent and Trademark office and other countries.
AcousticCoverage, Intrinsic Correction and Q-SYS are trademarks of QSC. All other trademarks are the property of their respective owners. Patents may apply or be pending.
150 mm
[5.9 in]
System Details AC-S4T
Effective frequency range
Rated noise power / voltage
Broad-band sensitivity
1
2
3
70 Hz – 20 kHz
16 watts / 11.3 volts (rms)
85 dB SPL
Coverage angle (-6 dB) 130° conical (500 Hz - 5 kHz)
Directivity factor (Q) 6
Directivity Index 8 dB
Maximum continuous SPL
Maximum peak SPL
Rated impedance 8 ohms
Recommended amplifier 32 watts
Transformer taps 70 V: 16, 8, 4, 2, 1 watts
LF transducer 100 mm [4 in] Polypropylene woofer
HF transducer 25 mm [1 in] Aluminium dome tweeter
4
4
97 dB
103 dB
100V: 16, 8, 4, 2 watts
8 ohm bypass
25 mm [1 in] voice-coil
25 mm [1 in] voice-coil
Input connector type Euroblo ck connec tor with p arallel ou tput
Enclosure material UV treated, high impact ABS polymer
Grille material Powder coated steel
Yoke material Powder coated steel, brass inserts
Enclosure Details
Ingress protection IP-44
Operating environment Designed for indoor use
Operating Temperature Range -20 to 50° C [-4 to 122° F]
Net weight 2.4 kg [5.3 lb]
Product dimensions 230 x 160 x 150 mm [9.1 x 6.3 x 5.9 in]
Shipping weight 5.3 kg [11.8 lb] (pair packed)
Shipping dimensions 292 x 206 x 368 mm [11.5 x 8.1 x 14.5 in] (pair packed)
Included accessories Yoke mount system, euroblock connector
1
Free-field, -10 dB from on-axis sensitivity
2
IEC60268-1 noise signal for 2 hours
3
On-Axis, free-field sensitivity, 2.83V, 1 m
4
Calculated from rated noise voltage and sensitivity
As part of QSC’s ongoing commitment to product development, specifications are subject
to change without notice.
please recycle
AC-S4T Spec Sheet 12/02/2016
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