Ceiling Speaker System QSC AD-C4T-LPZB (White)

The QSC AD-C4T-LPZB is a low-profile ceiling loudspeaker with an elegant frameless design that combines modern aesthetics with professional sound quality. It is part of the AcousticDesign™ series, which provides consistent tonal sound in any combination of wall and ceiling solutions. This model is ideal for installations in rooms where both acoustics and architectural integration are important.

The loudspeaker is equipped with a 4.5-inch woofer with a moisture-resistant paper cone and a 0.75-inch tweeter with an aluminum dome. Thanks to the Directivity Matched Transition® (DMT™) waveguide, the system provides uniform 150-degree coverage with a smooth frequency response across the entire 60 Hz – 20 kHz range. The maximum sound pressure level is 108 dB, allowing the system to be used even in rooms with high background noise levels.

The AD-C4T-LPZB supports both 70/100-volt systems and 16-ohm bypass, making it versatile for a variety of configurations. The built-in transformer has several power taps (3.75, 7.5, 15, 30 W), providing installation flexibility. The compact depth (only 100 mm) and 3-dog mounting system allow the speaker to be installed in confined spaces, while the magnetic grille provides easy installation and a premium look.

The enclosure is made of fire-resistant ABS plastic, and the protective grille is made of powder-coated steel. The system has an IP-34 protection rating and is certified to UL1480, UL2043, NFPA90, and NFPA70, allowing it to be used in air duct sound systems.

Features

• Frameless low-profile design (only 100 mm high)
• 4.5“ woofer + 0.75” aluminum tweeter
• Frequency range: 60 Hz – 20 kHz
• Coverage: 150° (conical, DMT™)
• Peak SPL: 108 dB
• 70/100 V transformer with 16 Ohm bypass
• 3-dog mounting + magnetic grille
• UL1480/2043, IP-34, RoHS, CE certified

User Manual