QSC AcousticDesign AD-C4T

The QSC AcousticDesign AD-C4T is a 4.5-inch, 2-way, 150° conical DMT ceiling loudspeaker suited to a wide variety of foreground and background sound reinforcement applications using 70V/100V or 16Ω bypass configurations.

A DMT (Directivity Matched Transition) waveguide ensures smooth, uniform frequency response over the coverage area, with a snap-fit magnetic grille and a triple double-stepped, long-travel dog-ear blind-mount system for fast installation. The AD-C4T is available in QSC standard black (RAL 9011) or white (RAL 9010), paintable to match any decor.

Specifications

Technical Overview

Transducers: 4.5 in weather-treated paper cone woofer, 1 in voice coil; 0.75 in aluminum dome tweeter
Frequency Range: 70 Hz – 20 kHz (effective range)
Rated Noise Power: 30 W / 22 V (rms)
Sensitivity: 87.5 dB
Coverage: 150° conical DMT
Directivity Factor / Index: 4.5 / 6.5 dB
Maximum SPL: 102 dB continuous, 108 dB peak
Nominal Impedance: 16Ω
Recommended Amplifier: 60 W
Impedance Options: 70V/100V transformer or 16Ω bypass
Input Connector: Euroblock connector with parallel output
Enclosure / Grille: ABS baffle on powder-coated steel back can; powder-coated steel grille
Ingress Protection: IP-34
Operating Temperature: -20 to 50°C (-4 to 122°F)
Product Dimensions (Diameter x Height): 230 x 176 mm (9.06 x 6.94 in)
Net Weight: 2.9 kg (6.4 lb)
Colors: Black (RAL 9011) or White (RAL 9010)

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