The KEF Ci160TR is an ultra-slim round in-ceiling speaker from the KEF T Series, pairing a 4.5″ (115mm) flat-diaphragm bass/mid driver with a 25mm aluminium tweeter. It needs only 36mm of mounting depth, so it is specified where ceiling space is at a premium, such as high-rise apartments and motor yachts.
Under 36mm mounting depth for very restricted ceiling cavities
Ultra-low-profile 115mm (4.5″) bass/mid unit with a rigid flat diaphragm
Vented 25mm (1″) aluminium tweeter with Tangerine waveguide for wide, even dispersion
Paintable Ultra-Thin Bezel (UTB) and magnetic grille
Installs via dogleg clamps or direct screw fixing
Suits ceiling/wall thicknesses from 10mm to 25.5mm
IP64 certified; UV-protected, moisture-resistant ABS bezel
160° nominal coverage
The “160” in the model name refers to the frame size: the Ci160TR uses a 4.5″ bass driver in a 234.6mm frame with a 196mm cut-out.
| Model | Ci160TR |
| Series | T Series |
| Type | 2-way round in-ceiling speaker |
| Nominal impedance | 8Ω |
| Sensitivity (2.83V/1m) | 87dB |
| Frequency response (±6dB, open-backed) | 110Hz – 24kHz |
| Crossover frequency | 1.7kHz |
| Drive units | LF: 115mm (4.5″) dual-layer; HF: 25mm (1″) aluminium |
| Amplifier power | 10 – 100W |
| External dimensions | Ø 234.6mm x 40mm deep |
| Cut-out diameter | 196mm |
| Mounting depth from surface | 36mm |
| Wall thickness | 10mm min / 25.5mm max |
| Frequency range (-10dB) | 69Hz – 45kHz |
| Nominal coverage | 160° |
| Max SPL | 101dB |
| Recommended high-pass filter | 70Hz |
| Optional rear enclosure | RNC160R |
| Rear volume | 3L ideal / 1L minimum |
| Certification | IP64 |
| Weight | 1kg |





