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
May 21, 2025
Orchard Audio
Orchard Audio Unveils the Starkrimson 25 Mono Premium: Next-Generation GaN Amplification
Orchard Audio is announcing the launch of the Starkrimson 25 Mono Premium, the latest evolution in high-performance gallium nitride (GaN) audio amplification. Designed for audiophiles, professionals, and music lovers who demand exceptional sound quality, this monoblock amplifier delivers clarity, precision, and power.
Read more
June 12, 2025
Nordost
New White Lightning 3 and Blue Heaven 3 Cables
Nordost recently launched 4 new products: White Lightning 3 Power Cord, White Lightning 3 Tonearm Cable, Blue Heaven 3 Digital Interconnect and Blue Heaven 3 USB 2.0 Cable
Read more
March 19, 2025
Albedo Silver
News OFFICIALLY RECOGNIZED IN MOST WANTED COMPONENTS 2024!
We are proud to announce that our Albedo Signature Metamorphosis Monocrystal speaker cables have been honored with a prestigious distinction in The Stereo Times magazine’s Most Wanted Components 2024 ranking!
Read more
FOLLOW US