The KEF Ci100.2QR is a 4-inch Uni-Q flush-mount in-ceiling speaker designed to deliver premium audio performance while remaining discreet in architectural installations. Its Uni-Q driver array places the tweeter at the acoustic center of the low-frequency cone, providing wide, even sound dispersion and a natural, detailed listening experience across the entire room.
Compact Design, Exceptional Sound
Despite its compact 4-inch driver, the Ci100.2QR delivers clear mids, crisp highs, and balanced sound, making it ideal for music, background audio, and home cinema setups. Its flush-mount design allows it to blend seamlessly into ceilings, preserving clean lines and unobtrusive aesthetics.
Flexible Installation Options
The speaker supports a nominal impedance of 8 Ω and operates with amplifiers in the 10–50 W range, ensuring compatibility with most home audio systems. It includes an optional back can for enhanced low-frequency performance and installation flexibility. The shallow mounting depth and 118 mm cut-out diameter make it simple to integrate into both new construction and retrofit projects.
Features
- UTBâ„¢ Ultra-Thin Bezel
- 75mm (3in.) Uni-Q driver
- 16mm (0.6in.) Aluminium dome tweeter with tangerine waveguide
- Removable rear can
- Magnetic grille
- Paintable grille and bezel
- Weather Resistant Construction
- IP64 certified
Specifications
| Specification | Details |
|---|---|
| Nominal Impedance | 4 Ω |
| Sensitivity | 83 dB (2.83 V / 1 m) |
| Frequency Response (±6 dB) | 90 Hz – 27 kHz (open-back)130 Hz – 27 kHz (with back can) |
| Crossover Response | 3.5 kHz |
| Drive Units | LF: 75 mm (3 in.) Uni-QHF: 16 mm (0.6 in.) |
| Recommended Amplifier Power | 10–50 W |
| Product External Dimensions | Diameter: 136 mm (5.4 in.)Depth: 57 mm (2.2 in.)Depth with back can: 110 mm (4.3 in.) |
| Cut-Out Dimensions | Diameter: 118 mm (4.6 in.) |
| Mounting Thickness | Ceiling Thickness (Maximum): 22 mm (0.87 in.)Ceiling Thickness (Minimum): 6 mm (0.24 in.) |
| Mounting Depth From Surface | 52 mm (2 in.)103 mm (4.1 in.) with back can |
| Net Weight | 0.50 kg (1.10 lbs)0.65 kg (1.44 lbs) with back can |
| Unit Measurement | Piece |
T4S9M1E/40-BKM
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