KEF CI4100QL THX Certified in wall speaker

Additional Information

Description Specification Downloads

Featuring KEF’s sophisticated ’sit anywhere’ Uni-Q driver array, which places the tweeter in the acoustic centre of the bass/midrange cone, this allows both the tweeter and woofer to act as a single point source that disperses the sound widely and evenly throughout the room. Together with the discreet Ultra Thin Bezel (UTB) design, offering the slimmest possible visible rim around the speaker, the Ci Q Series range gives you tremendous freedom to position the speakers where you please.

Model: Ci4100QLb
Nominal Impedance:
Sensitivity (2.83V/ 1m): 89dB
Frequency response (±6dB) open-backed: 55Hz - 28kHz
Crossover frequency: 2.2kHz
Drive units: LF: 3 x 100mm (4 in.)
MF: 100mm (4 in.)
HF: 19mm (0.75 in.) Uni-Q
Recommended Amplifier Power: 10-150W
Product external dimensions (H x W x D): 490 x 128 x 81 mm (19.29 x 5.04 x 3.19 in.)
Cut-out dimensions (H x W): 476 x 114mm (18.74 x 4.49 in.)
Net Weight: 3 kg (6.61 lbs)
Mounting depth from surface: 76mm (3.0 in.)


  • Uni-Q driver array
  • Wide dispersion