KEF Ci100QS In-Wall/In-Ceiling Loudspeaker

KEF Ci100QS In-Wall/In-Ceiling Loudspeaker

Free UK Delivery

In Stock


KEF Ci100QS In-Wall/In-Ceiling Loudspeaker

KEF is a highly renowned, multi-award winning loudspeaker manufacturer whose high quality products can be found all over the world. KEF began in Maidstone Kent in 1961 by electrical engineer, Raymond Cooke. KEF is naimed after Kent Engineering & Foundry, which occupied the KEF site previously. Raymond Cooke was created OBE by Queen Elizabeth II in 1979. KEF have produced products for the BBC, and have a vast range of products at many different price points.

When designing and engineering their range of in ceiling and in wall loudspeakers, KEF retained the philosophy of 'hiding your speakers, not your sound' in order to offer the home audio enthusiast the best possible sound achievable within a discrete and almost invisible aesthetic. The Ci series is able to deliver a phenomenally accurate response, complete with the three-dimension stereo sound imaging you'd expect from high-quality conventional loudspeakers.

Where small speakers are required for walls and ceilings, the Ci100QS fits the bill perfectly - just 127mm square but with a big 50W power handling and wide frequency range of 80Hz to 27kHz. The small size means that once installed they blend in with halogen light fixtures, yet will still amaze you with the astonishing performace thanks to KEF's patented Uni-Q's exceptionally wide dispersion. The Uni-Q drivers feature the tweeter in the middle of the main driver of the speaker and can be seen featured though a wide range of KEF loudspeakers.

Sold singly


KEF Ci100QS in-wall speaker


Model Ci100QS
Nominal Impedance
Sensitivity (2.83V/ 1m) 88dB
Frequency response open-backed (±6dB)   80Hz - 27kHz
Crossover frequency 3kHz
Drive units

LF 100mm (4in.)
HF 19mm (0.75in.)

Recommended Amplifier Power 10 - 50 W
Product external dimensions (H x W x D) 127 x 127 x 76 mm (5.0 x 5.0 x 2.99 in.)
Cut-out dimensions (H x W) 112 x 112 mm (4.41 x 4.41 in.)
Net Weight 0.67kg (1.48lbs.)
Mounting depth from surface (Without back can) 72mm (2.83in.)
Optional rough in frame RIF100S
Optional rear enclosure RNC100S

Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

Press & Awards