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Architectural Speakers


Combining durability, reliability and UL certification

KEF’s undisputed audio pedigree and consistent, high quality performance, the Ci Commercial Series is an outstanding in-ceiling speaker line-up for project work of all types.

Reproducing lower frequencies with confident accuracy is critical for achieving a satisfyingly full-bodied sound in public spaces, and with the dedicated long-throw 160mm (6.5in.) bass driver from KEF’s renowned iQ range, the Ci160ST delivers gloriously extended, articulate and distortion-free bass.

The tonal match is perfect with the rest of the new Ci Commercial Series, which are designed specifically for foreground music and music/paging applications in retail, commercial and hospitality environments. With back can, 70V/100V multi-tap transformers for distributed line systems and UL2043 safety approval for use in plenum spaces and UL1480-5 for fire protection signalling systems, it meets every requirement for interior use. The bezels and grilles can of course be finished to blend unobtrusively with the décor –and with KEF’s ingeniously simple fixing system, the units are exceptionally easy for the contractor to install.

The Ci160ST is supplied with a C-ring mounting bracket and tile hanger for use in suspended ceilings. Like all KEF loudspeakers, this formidably competent subwoofer is built to KEF’s traditional high standards for reliable long term use.


The Ci Commercial Series Ci160ST is best suited where high quality music and speech reinforcement applications require hi-fi performance such as:

  • Multi Room systems
  • Home Theatre systems
  • Lounges, Bars, Boutiques
  • Boardrooms & Offices
  • Airports, Convention Centres, Hotels
  • Live Theatre/Concert Hall fill-in
  • Houses of Worship
  • Sports Arena

The Details


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Integral fire-rated metal rear enclosure
UL2043-approved for use in air handling spaces
UL1480-5-approved for use in fire protection signalling systems
Front-mounted switch for selecting 4 ohm or 70/100 volt operatio
Includes the hardware for mounting above a suspended ceiling or in a hard ceiling


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Nominal Impedance
4 Ohms
85dB (2.83V/ 1m)
Frequency Response
60 - 130Hz (+/-6dB) With back can/rear enclosure
Crossover Frequencies
Drive Units
LF: 160mm
Passive Subwoofer, UL2043 & UL1480-5 approved, 70V: 7.5W, 15W, 30W, 60W / 100V: 15W, 30W, 60W
Recommended Amplifier Power
20 - 100W
Cut-out Dimensions (H X W)
Diameter : 240mm (9.45in.)
Mounting Thickness
Ceiling Thickness (Maximum): 38mm (1.5 in.)
Ceiling Thickness (Minimum): 7mm (0.28 in.)
Mounting Depth From Surface
With back can : 185mm (7.28in.)
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.

Please visit our Ci Software Download page for more details.

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