QSC AC-C4T is a full-range 4.5″ 140? conical for use with 70 or 100V or 8-ohm systems (Pair)

Original price was: $558.00.Current price is: $502.20.

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This pair of QSC AcousticCoverage Series AC-C4T 4.5″ Ceiling-Mount Loudspeakers features a polypropylene cone transducer with butyl rubber surround that offers clear sound with a frequency response range of 70 Hz to 16 kHz. It offers 140? of conical coverage. This loudspeaker utilizes a 16W low-saturation and low-loss 70/100V transformer with varying selectable taps, including an 8? bypass. The rotary tap selector switch is accessible under the powder-coated steel grille.

The easy-to-install blind mount assembly features a ported baffle and galvanized steel backcan. The 4-pole Euroblock connector is located under a quick access swivel plate and accepts four 18AWG pairs for loop-thru wiring. ?A safety tether tab is affixed to the adjustable conduit clasp plate for seismic-sensitive installations. C-ring and tile rails are included with each pair packed assembly, complete with joining screws and a cut-out template. The baffle and grille are QSC standard white (RAL 9010) to match complimenting QSC product families and includes UV inhibitors to prevent discoloration over time. They may also be painted to match any decor.



  • High quality 4.5-inch full-range transducer provides exceptional clarity through the critical voice range.
  • Ported baffle for increased low frequency extension down to 70 Hz.
  • Low-saturation 70V/100V transformers with 8-ohm bypass.
  • 4-pole Euroblock connector for easy system wiring.
  • Advanced voicing filter sets using QSC Intrinsic Correction™ are available through either Q-SYS processing or CXD amplifier platforms.
  • White (RAL 9010) with UV inhibitors to match complementing QSC product families.
  • Complete EASE, CAD, and BIM information available online


Specifications AC-C4T
Effective frequency range 70 Hz to 16 kHz
Rated noise power / voltage 16 watts / 11.3 volts (rms)
Broad-band sensitivity 89 dB SPL
Coverage angle (-6 dB) 140° (500 Hz to 5 kHz)
Maximum continuous SPL 101 dB
Maximum peak SPL 107 dB
Rated impedance 8 ohms
Transformer taps:
          70 V 16, 8, 4, 2, 1 watts and 8-ohm bypass
          100V 16, 8, 4, 2, watts and 8-ohm bypass
Transducer 4.5-inch Polypropylene cone with butyl rubber surround
Input connector type Euroblock connector with parallel output terminals
Baffle material Painted ABS polymer
Grille material Powder coated steel
Back can material Galvanized steel
Testing Listed UL1480, UL2043 safe for use in air handling space
Net weight 4.9 lb / 2.22 kg
Product dimensions 8.4-inch × 7.9-inch (214 × 201 mm)
Cut-out Dimensions 7.31-inch (185.67mm)
Ceiling Capture Thickness 0.25-inch to 1.5-inch (6.35 to 38.1mm)
Shipping weight 15.1 lb / 6.86 kg
Shipping dimensions 10.75-inch × 24-inch × 10.5-inch (273.1 × 609.6 × 266.7 mm)
Included accessories Rails and C-ring for ceiling tile installation
Optional accessories AC-MR4 mud ring for sheet rock installation



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