Introducing Two New THX-Certified In-Wall Speakers With MAT™ KEF, November 13, 2025

Ci-Q Series

Ci-Q Series takes cutting-edge acoustic technology from ranges including Ci-Reference and Ci-R series and delivers them to more people than ever before. Representing exceptional value, Ci-Q Series unlocks detail and depth in whatever you choose to listen to.

Ci5120QLM-THX

A versatile THX Certified Ultra In-Wall Speaker with MAT™​

The Ci5120QLM-THX in-wall architectural speaker meets the growing demand for high-performance home theatre solutions in multipurpose rooms, where dedicated spaces are less common. Featuring a 12th generation Uni-Q driver array and our groundbreaking Metamaterial Absorption Technology (MAT), the Ci5120QLM-THX is THX Certified Ultra. It recreates high-impact cinema sound with best-in-class audio fidelity, making it ideal for large-sized rooms.​

Specifications

  • Model Ci5120QLM-THX
  • Series Q Series
  • Nomimal Impedance 4Ω
  • Sensitivity 89dB
  • Frequency Response Range 45Hz - 20kHz
  • Frequency Response Remark (±6dB) open-backed
  • Frequency Range 38Hz - 20kHz
  • Nominal Coverage 150°
  • Maximum SPL 105dB
  • Crossover Frequency 440Hz, 2.75kHz
  • Drive Units
    LF: 4 x 120mm (4.75 in.)
    MF: 100mm (4 in.) Uni-Q
    HF: 19mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology1
  • Recommended Amplifier Power 25 - 250 W
  • Recommended High-Pass Filter (Hz) 35Hz-100Hz
  • Product External Dimensions (H x W x D) 818mm x 186mm x 96mm (32.2in. x 7.3in. x 3.8in.)
  • Cut-Out Dimensions (H x W) 795mm x 163mm (31.3in. x 6.4in.)
  • Net Weight 9.7KG (21.4 lbs.)
  • Mounting Depth From Surface 90mm (3.6")
  • Ideal Rear Volume (L) 70
  • Minimum Rear Volume (L) 35
  • THX Certification THX® Certified Ultra
  • Safety And Regulatory Compliance IP64
  • Ceiling Thickness (Maximum) 36mm (1.42in)
  • Ceiling Thickness (Minimum) 6mm (0.24in)
  • Remarks 1 Metamaterial Absorption Technology is a joint development with Acoustic Metamaterials Group.

Ci3120QLM-THX

A versatile THX Certified Select In-Wall Speaker with MAT™

The Ci3120QLM-THX in-wall architectural speaker meets the growing demand for high-performance home theatre solutions in multipurpose rooms, where dedicated spaces are less common. Featuring a 12th generation Uni-Q driver array and our groundbreaking Metamaterial Absorption Technology (MAT), the Ci3120QLM-THX is THX Certified Select. It recreates high-impact cinema sound with best-in-class audio fidelity, making it ideal for medium-sized rooms.

Specifications

  • Model Ci5120QLM-THX
  • Series Q Series
  • Nomimal Impedance 4Ω
  • Sensitivity 89dB
  • Frequency Response Range 45Hz - 20kHz
  • Frequency Response Remark (±6dB) open-backed
  • Frequency Range 38Hz - 20kHz
  • Nominal Coverage 150°
  • Maximum SPL 105dB
  • Crossover Frequency 440Hz, 2.75kHz
  • Drive Units
    LF: 4 x 120mm (4.75 in.)
    MF: 100mm (4 in.) Uni-Q
    HF: 19mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology1
  • Recommended Amplifier Power 25 - 250 W
  • Recommended High-Pass Filter (Hz) 35Hz-100Hz
  • Product External Dimensions (H x W x D) 818mm x 186mm x 96mm (32.2in. x 7.3in. x 3.8in.)
  • Cut-Out Dimensions (H x W) 795mm x 163mm (31.3in. x 6.4in.)
  • Net Weight 9.7KG (21.4 lbs.)
  • Mounting Depth From Surface 90mm (3.6")
  • Ideal Rear Volume (L) 70
  • Minimum Rear Volume (L) 35
  • THX Certification THX® Certified Ultra
  • Safety And Regulatory Compliance IP64
  • Ceiling Thickness (Maximum) 36mm (1.42in)
  • Ceiling Thickness (Minimum) 6mm (0.24in)
  • Remarks 1 Metamaterial Absorption Technology is a joint development with Acoustic Metamaterials Group.

Metamaterial Absorption Technology

Absorbs 99% of the unwanted sound

Uni-Q®

Acts as a single point source to enlarge the ‘sweet spot’ and disperse sound more evenly.

THX Certified

Ci5120QLM-THX delivers ultra-high performance with true theatre sound quality for large theatres and living rooms and it is THX® Certified Ultra.

Ultra-deep, clean bass

Four specially designed 120mm (4.75 in.) bass drivers provide long throw capabilities and low distortion

Detailed, balanced sound​

The 3-way system design and fully optimised crossovers allow each driver to be optimally configured for its specific role, elevating performance to another level.

Hide your speakers, not your sound

The paintable magnetic metal grille and Ultra-Thin Bezel (UTB) give it the appearance of a hidden speaker, allowing it to blend seamlessly into any environment.

The details

Explore our complete library of product documents.

Press Release Documents

Website Address

https://international.kef.com
More Press Releases
February 18, 2020
Panasonic
Panasonic’s new DAB+ Range Has Your Day Covered
The DM502 system’s rich bass and crystal-clear vocals result from an impressive build-quality with wooden speaker cabinet. Logical ergonomic design – featuring generously sized tactile preset buttons - makes playing music, from radio, CD and streaming a pleasure.
Read more
May 7, 2024
Chord
Suzi amplifiers unveiled at HIGH END 2024
Designed by John Franks, the Suzi concept includes a new preamp, plus an innovative ULTIMA-tech modular power amplifier that can be used to form a conventional pre/power, or used separately with our Hugo 2 DAC or the Hugo 2/2go streamer/player to create a DAC/amplifier or a streaming amplifier.
Read more
February 1, 2019
Isotek
IsoTek launches Sirius: a new mains conditioning power strip
Isotek has unveiled its latest weapon in the fight to rid our hi-fi systems of a poor quality mains supply. The Sirius is a six-way power strip aimed specifically at audio systems and containing cutting-edge mains conditioning circuitry fresh from IsoTek’s R&D facility. As well as delivering sufficient sockets to power most set-ups, it also ensures the electricity supply delivered to each component is free from the kind of mains-borne interference that can significantly erode the performance of
Read more
FOLLOW US