Q-SYS AD-C4T-LPZB, a low-profile 2-way passive in-ceiling loudspeaker featuring a 4.5-inch woofer and 0.75-inch aluminium tweeter, designed for professional audio installations where discreet appearance, consistent coverage and compatibility with 70V/100V distributed systems or 16Ω low-impedance operation are required.
The zero-bezel design and magnetic grille allow the loudspeaker to blend discreetly into the ceiling, while the Directivity Matched Transition® (DMT) waveguide provides smooth and consistent frequency 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 option. 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, simplifying daisy-chain wiring in multi-loudspeaker installations.
The enclosure 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 carries UL1480 and UL2043 certifications.
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: 87dB
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: O245mm
Dimensions: O280 x 100mm
Weight: 3kg
Included: C-ring, tile rails, rail screws, Euroblock connector, cut-out template, tether grille
Colour: Signal White (RAL 9003)
Certifications: UL1480, UL2043, NFPA90, NFPA70, CE, RoHS