Q-SYS AD-C4T-ZB, a 2-way passive in-ceiling loudspeaker with a zero-bezel design, featuring a 4.5-inch woofer and a 0.75-inch aluminium tweeter, designed for professional foreground and background audio installations with support for 70V/100V distributed systems and 16Ω bypass operation.
The frameless design and magnetic grille allow the loudspeaker to blend discreetly into the ceiling, while the Directivity Matched Transition® (DMT) waveguide provides smooth and consistent response throughout the coverage area. The loudspeaker offers 150° conical coverage and a frequency response of 70Hz–20kHz, making it suitable for conference rooms, retail spaces, hotels, restaurants, educational facilities and other installed audio applications.
It features an integrated 70V/100V transformer with multiple power taps and a 16Ω bypass mode. Rated power is 30W, with a maximum continuous SPL of 102dB and peak SPL of 108dB. Connections are made via Euroblock with a parallel output, making daisy-chain wiring easier in multi-loudspeaker installations.
The construction combines an ABS baffle with a powder-coated steel back can, while the IP34 rating provides protection against dust and water splashes. The loudspeaker is designed for indoor use and uses a blind-mount installation system with three long-travel dog-ear mounting points. A C-ring, tile rails, Euroblock connector, cut-out template and grille are included
Technical Specifications
Type: 2-way passive in-ceiling loudspeaker
Woofer: 4.5” weather-resistant paper cone
Tweeter: 0.75” aluminium dome
Frequency response: 70Hz–20kHz
Rated power: 30W
Recommended amplifier power: 60W
Sensitivity: 87.5dB
Maximum continuous SPL: 102dB
Maximum peak SPL: 108dB
Coverage: 150° conical DMT
Nominal impedance: 16Ω
70V taps: 3.75W / 7.5W / 15W / 30W
100V taps: 7.5W / 15W / 30W
Connection: Euroblock with parallel output
Enclosure material: ABS baffle with powder-coated steel back can
Grille: Powder-coated steel, magnetic
Protection rating: IP34
Application: Indoor use
Operating temperature: -20°C to 50°C
Cutout diameter: O195mm
Dimensions: O230 x 176mm
Weight: 2.9kg
Included: C-ring, tile rails, rail screws, Euroblock connector, cut-out template, grille
Colour: Signal White (RAL 9003)
Certifications: UL1480, UL2043, NFPA90, NFPA70, CE, RoHS