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
December 5, 2022
Crystal Cable
The new Diamond Series 2
The introduction of our brand new Diamond Series 2 cable range on December 5, 2022 allowed us to offer Crystal Cable’s core values at a more modest price. The new Diamond Series 2 is not only a radical improvement compared to the original Diamond Series in terms of sound, but it also offers exceptional value for money.
Read more
June 13, 2024
Focal
Focal creates the ultimate experience for the Rimac Nevera electric hypercar
This sensational hypercar is produced by a Croatian company that specialises in high-performance electric vehicles. It’s equipped with a Focal Utopia M sound system which provides an incredible listening experience.
Read more
October 4, 2025
Wilson Benesch
GRAVITON® Ti: Biomimetic Design. Absolute Fidelity.
Crafted for the discerning audiophile and the true music lover, GRAVITON® Ti delivers a new benchmark in analogue performance. This is British engineering at its most advanced—uniting a graphene-reinforced carbon fibre armtube with biomimetic titanium structures grown through state-of-the-art additive manufacturing.
Read more
FOLLOW US