KEF Ci160TR 4.5" Ultra-Slim Two-Way Round In-Ceiling Architectural Speaker WHITE

The KEF Ci160TR is a high-performance ultra-slim architectural speaker designed to deliver clear, natural and widely dispersed sound from an exceptionally shallow in-ceiling installation. Part of KEF's T Series architectural loudspeaker range, the Ci160TR combines a patented 115 mm (4.5") low-profile bass/midrange driver with a 25 mm (1") vented aluminium tweeter featuring KEF's Tangerine Waveguide technology.

With an overall depth of only 40 mm (1.57") and a mounting depth of less than 36 mm (1.42"), the Ci160TR is specifically engineered for installations where conventional in-ceiling loudspeakers cannot fit. Its compact construction makes it an excellent choice for shallow ceiling cavities, modern residential interiors, custom home theatres and distributed audio installations.

The Ci160TR features KEF's Ultra-Thin Bezel design, a paintable magnetic round grille and moisture-resistant construction with IP64 certification. Its UV-protected materials and broad 160-degree sound coverage provide additional installation flexibility, allowing high-quality audio reproduction in a variety of residential and suitable outdoor environments.

Ultra-Slim Architectural Speaker Design

The Ci160TR is engineered for installations where mounting depth is a critical consideration. Its exceptionally shallow construction is made possible by KEF's patented low-profile driver technology, which delivers impressive acoustic performance from a speaker measuring just 40 mm (1.57") deep.

Requiring less than 36 mm (1.42") of mounting depth from the installation surface, the Ci160TR can be installed in suitable ceiling cavities that cannot accommodate many conventional architectural loudspeakers.

This makes it particularly useful for residential renovations, modern apartments, luxury interiors and custom installations where ceiling space is limited.

Patented 115 mm Low-Profile Bass/Midrange Driver

At the heart of the Ci160TR is KEF's patented 115 mm (4.5") dual-layer low-profile bass/midrange driver. Its innovative flat construction significantly reduces the depth required behind the mounting surface while maintaining controlled bass and detailed midrange reproduction.

The driver is designed to reproduce vocals, instruments and soundtrack effects accurately without requiring the deep enclosure associated with conventional architectural speakers.

This technology enables the Ci160TR to deliver capable acoustic performance while remaining discreetly integrated into a ceiling.

25 mm Vented Aluminium Tweeter

The Ci160TR incorporates a high-performance 25 mm (1") vented aluminium tweeter designed to reproduce detailed high frequencies with clarity and precision.

Its vented construction helps optimize high-frequency performance, while the 1.7 kHz crossover integrates the tweeter with the low-profile bass/midrange driver for balanced sound reproduction.

The resulting acoustic configuration delivers a specified open-backed frequency response of 110 Hz to 24 kHz (±6 dB), with an extended frequency range of 69 Hz to 45 kHz at the -10 dB points.

KEF Tangerine Waveguide Technology

The Ci160TR features KEF's Tangerine Waveguide, a specially engineered acoustic structure positioned in front of the high-frequency driver.

In addition to providing protection for the tweeter, the Tangerine Waveguide improves acoustic dispersion and helps deliver consistent high-frequency reproduction across a wider listening area.

With a nominal coverage angle of 160 degrees, the Ci160TR distributes sound broadly throughout the room, making it particularly suitable for architectural installations where listeners may be positioned away from the speaker's central axis.

Ultra-Thin Bezel Design

KEF's Ultra-Thin Bezel (UTB) technology minimizes the visible border surrounding the speaker grille, helping the Ci160TR blend naturally into its surroundings.

The bezel is manufactured from UV-protected ABS and engineered to measure no more than 5 mm (0.20") in width while maintaining the structural rigidity required for secure installation.

This refined construction creates a clean, understated appearance that complements contemporary interiors without drawing unnecessary attention to the speaker.

Paintable Magnetic Round Grille

The Ci160TR features a paintable round grille that attaches securely using a powerful magnetic mounting system.

The magnetic design allows the grille to be removed conveniently for installation and maintenance without requiring visible screws or mechanical fasteners on the front surface.

Its paintable finish allows the grille to be matched to the surrounding ceiling colour, helping achieve a discreet, professionally integrated installation.

Flexible Dog-Leg and Direct Screw Mounting

The Ci160TR supports two mounting methods to accommodate different architectural installation requirements.

Traditional dog-leg mounting tabs allow the speaker to be secured inside a properly prepared ceiling opening, while provisions for direct screw mounting provide an alternative for suitable solid mounting surfaces.

The speaker has an overall diameter of 234.6 mm (9.24") and requires a circular cutout measuring 196 mm (7.71") in diameter.

For new construction or custom installation projects, the optional KEF RIF160R rough-in frame and RNC160R rear enclosure provide additional installation options. These accessories are sold separately.

Moisture-Resistant and UV-Protected Construction

The Ci160TR is manufactured using moisture-resistant components and UV-protected materials to improve durability in demanding environments.

KEF employs proprietary plating and powder-coating processes to help protect the speaker's components against environmental exposure.

This construction makes the Ci160TR suitable for appropriately designed installations in bathrooms, indoor pool areas, marine environments and other locations where elevated humidity or occasional moisture exposure may be present.

IP64 Certified Environmental Protection

The Ci160TR has passed official IEC testing and carries an IP64 ingress protection rating.

This rating indicates dust-tight construction and protection against splashing water from multiple directions, helping protect the speaker's internal components from environmental exposure.

IP64 protection does not indicate suitability for immersion or direct high-pressure water jets. Installations must follow the manufacturer's guidelines and applicable local electrical and building requirements.

Wide 160-Degree Sound Coverage

The Ci160TR is designed to provide broad, consistent sound distribution throughout the listening environment. Its 160-degree nominal coverage angle helps maintain clear audio reproduction across a wide seating area.

This makes the speaker particularly well suited to kitchens, living rooms, hallways, home offices, bedrooms and distributed audio systems where listeners move throughout the space.

KEF's Tangerine Waveguide and carefully engineered driver arrangement help maintain natural tonal balance and detailed reproduction beyond the speaker's central listening axis.

Optimized Rear Cavity Requirements

The acoustic performance of an architectural loudspeaker is influenced by the volume of the cavity behind the driver.

KEF specifies an ideal rear cavity volume of 3 litres (0.106 cubic feet) for the Ci160TR, with a minimum recommended volume of 1 litre (0.035 cubic feet).

Providing sufficient rear cavity volume helps the speaker achieve its intended acoustic performance while preserving its exceptionally shallow mounting dimensions.

Compatible with Home Audio Amplifiers

The Ci160TR is a passive loudspeaker designed for use with compatible external amplification. It features an 8-ohm nominal impedance and sensitivity of 87 dB (2.83V/1m).

KEF recommends amplifier power between 10 and 100 watts, providing compatibility with appropriately configured stereo amplifiers, distributed audio systems and multichannel AV receivers.

A recommended high-pass filter frequency of 70 Hz can help manage low-frequency demands and facilitate integration with compatible subwoofers.

Performance for Custom Architectural Audio

With a maximum acoustic output of 101 dB SPL, the Ci160TR provides capable dynamic performance from its compact design.

The combination of wide sound dispersion, detailed high-frequency reproduction and its patented low-profile driver makes it suitable for background music, stereo listening and compatible home theatre applications.

Its shallow mounting depth, moisture-resistant construction and paintable magnetic grille make it particularly valuable for installations where both acoustic performance and discreet visual integration are priorities.

Features:

• Ultra-slim two-way round architectural speaker for in-ceiling installation
• Patented 115 mm (4.5") dual-layer low-profile bass/midrange driver
• 25 mm (1") vented aluminium high-frequency tweeter
• KEF Tangerine Waveguide for improved dispersion and high-frequency performance
• Wide 160-degree nominal sound coverage
• Exceptionally shallow mounting depth of less than 36 mm (1.42")
• Overall speaker depth of only 40 mm (1.57")
• KEF Ultra-Thin Bezel (UTB) design
• Paintable magnetic round grille for discreet ceiling integration
• UV-protected ABS baffle and bezel
• Moisture-resistant construction with protective plating and powder coating
• IP64 certified protection against dust and splashing water
• Suitable for appropriately designed bathroom, pool-area and marine installations
• Dog-leg mounting tabs for secure recessed installation
• Alternative direct screw mounting for suitable solid surfaces
• Frequency response of 110 Hz to 24 kHz (±6 dB)
• Extended frequency range of 69 Hz to 45 kHz (-10 dB)
• 1.7 kHz crossover frequency
• Maximum acoustic output of 101 dB SPL
• 8-ohm nominal impedance with 87 dB sensitivity
• Recommended amplifier power of 10 to 100 watts
• Recommended 70 Hz high-pass filter
• Ideal rear cavity volume of 3 litres
• Compatible with optional KEF RIF160R rough-in frame
• Compatible with optional KEF RNC160R rear enclosure
• Lightweight 1 kg (2.2 lbs) construction
• Round White architectural finish

Specifications:

General

• Brand: KEF
• Model: Ci160TR
• Series: T Series
• Product Type: Passive Architectural In-Ceiling Speaker
• Speaker Design: Two-Way
• Grille Shape: Round
• Colour: White
• Quantity: Each (1 Speaker)

Driver & Acoustic Performance

• Low-Frequency Driver: 1 x 115 mm (4.5") Dual-Layer Low-Profile Driver
• High-Frequency Driver: 1 x 25 mm (1") Vented Aluminium Tweeter
• Tweeter Technology: KEF Tangerine Waveguide
• Frequency Response (±6 dB), Open-Backed: 110 Hz - 24 kHz
• Frequency Range (-10 dB): 69 Hz - 45 kHz
• Nominal Coverage: 160 Degrees
• Maximum Acoustic Output: 101 dB SPL
• Crossover Frequency: 1.7 kHz
• Sensitivity: 87 dB (2.83V/1m)
• Nominal Impedance: 8 Ohms

Amplification

• Speaker Type: Passive
• Recommended Amplifier Power: 10 - 100 W
• Recommended High-Pass Filter: 70 Hz
• External Amplification Required: Yes

Construction & Materials

• Bezel Technology: KEF Ultra-Thin Bezel (UTB)
• Bezel Material: UV-Protected ABS
• Bezel Width: No More Than 5 mm (0.20")
• Grille Type: Paintable Magnetic Round Grille
• Grille Attachment: Magnetic
• Environmental Protection: Moisture-Resistant Components
• Protective Treatment: Proprietary Plating and Powder Coating
• UV Protection: Yes

Environmental Protection

• Ingress Protection Rating: IP64
• Certification: IEC Tested
• Dust Protection: Dust-Tight (IP6X)
• Water Protection: Protected Against Splashing Water (IPX4)
• Suitable Applications: Residential Interiors, Bathrooms, Pool Areas and Appropriate Marine Installations

Mounting & Installation

• Installation Type: Flush-Mount Architectural Installation
• Primary Mounting Location: Ceiling
• Mounting System: Dog-Leg Tabs or Direct Screw Mounting to Suitable Solid Surfaces
• Mounting Depth from Surface: Less Than 36 mm (1.42")
• Cutout Diameter: 196 mm (7.71")
• Ideal Rear Volume: 3 Litres (0.106 cu. ft.)
• Minimum Rear Volume: 1 Litre (0.035 cu. ft.)
• Optional Rough-In Frame: KEF RIF160R (Sold Separately)
• Optional Rear Enclosure: KEF RNC160R (Sold Separately)

Dimensions & Weight

• Overall Diameter: 234.6 mm (9.24")
• Overall Depth: 40 mm (1.57")
• Required Cutout Diameter: 196 mm (7.71")
• Required Mounting Depth: Less Than 36 mm (1.42")
• Net Weight: 1 kg (2.2 lbs)

What's in the Box:

• 1 x KEF Ci160TR Ultra-Slim Round Architectural Speaker - White
• 1 x Paintable Magnetic Round Grille