Ci3120QLM-THX
KEF Discontinued

Ci3120QLM-THX

In-wall 3-way architectural speaker with a Uni-Q driver array and Metamaterial Absorption Technology, THX Certified Select. Aimed at home theatres and multipurpose rooms of medium size where a hidden speaker is wanted.

  • THX Certified Select in-wall speaker
  • 3-way design with 12th-gen Uni-Q array
  • Metamaterial Absorption Technology on the tweeter
  • 2 x 120mm bass drivers, 100mm Uni-Q mid
  • Paintable magnetic grille, ultra-thin bezel
  • IP64 dust and water rating
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Description

The Ci3120QLM-THX is a flush-mounted in-wall speaker from KEF's Q Series, certified THX Select for medium-sized theatres and living rooms. It uses a 3-way design with two 120mm bass drivers, a 100mm Uni-Q midrange and a 19mm vented aluminium dome tweeter. The Uni-Q array works as a single point source to widen the listening area and spread sound more evenly, and Metamaterial Absorption Technology is used to soak up unwanted sound from behind the tweeter.

The crossovers are tuned so each driver handles its own range, with crossover points at 440Hz and 2.75kHz. The bass drivers are designed for long excursion with low distortion. An ultra-thin bezel and a paintable magnetic metal grille let the speaker blend into the wall. The enclosure carries an IP64 dust and water rating.

The speaker is wired to an amplifier with speaker cable run to the cut-out. A cut-out template is included, and the speaker fits wall thicknesses from 6 mm to 36 mm. Recommended amplifier power is 25 to 250 W, with a high-pass filter set between 35Hz and 100Hz.

Video

Specifications

Brand
KEF
Model
Ci3120QLM-THX
Category
Hi-fi and home audio › Speakers

Audio

Series
Q Series
Frequency response (±6dB, open-backed)
50Hz - 20kHz
Sensitivity
89dB
Nominal impedance
4Ω
Nominal coverage
150°
Maximum SPL measured at 1m
105 dB
Crossover frequency
440Hz, 2.75kHz
Certification
THX Certified Select

Drivers

LF
2 x 120mm (4.75 in.)
MF
100mm (4 in.) Uni-Q
HF
19mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology

Power

Recommended amplifier power
25 - 250 W
Recommended high-pass filter
35Hz-100Hz

Installation

Cut-out dimensions (H x W)
513 mm x 163 mm (20.2 in. x 6.4 in.)
Mounting depth from surface
90mm (3.6")
Mounting thickness
Maximum: 36 mm (1.42 in.), Minimum: 6 mm (0.24 in.)
Ideal rear volume
40
Minimum rear volume
20
Dust and waterproof rating
IP64

Physical

External dimensions (H x W x D)
536mm x 186mm x 96mm
Net weight
6.2KG (13.7 lbs.)
Gross weight, single box
8.3KG (18.3 lbs.)
Gross weight, master box
17.7KG (39 lbs.)

In the box

Speaker
Ci3120QLM-THX x 1
Grille
Metal grille x 1
Template
Cutout template x 1
Documentation
Warranty booklet, Manual

Data: kef.com; photos: KEF product page · updated 2026-10-12 · Found a mistake? Write to us