The ADC-MR4 is a 6 piece package of mud ring brackets for the QSC Acoustic Design Series AD-C42T weather resistant ceiling speakers.
Wide Area Paging ∙ Background Music ∙ Distance Conferencing
Reinforcement∙ Healthcare Facilities ∙ Concourses ∙ Transportation
Terminals ∙ Ancillary Support in Larger Systems
• High quality transducers provide
exceptional clarity through the
critical voice range.
• Improved musicality often
not seen in typical BGM class
• Ported baffle for increased low
frequency extension down to
• 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
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™ Series is designed to
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.
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
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
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.
Small format, surface mount
500 2k 5k 20k
Beamwidth (-6 dB) (deg)
Beamwidth: Impedance / Frequence Response:
100 1k 10k
Sound Pressure, Level (dB)
Impedance, Amplitude (ohm)
20 50 200 500 2k 5k 20k
Frequency Response (Raw)
Frequency Response (Intrinsic Correction™)
Impedance (8 Ohm Bypass)
AC-S4T Spec Sheet 12/02/2016