KEF Ci50 Soundlight system


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KEF Ci50 Soundlight system

Loudspeaker installations don’t come more discreet than the Ci50 Soundlight System. A full bandwidth sound system consisting of four satellite speakers and a twin-ported subwoofer, the only visible components are designed to be virtually indistinguishable from a standard 50mm low voltage light fitting once installed.

The subwoofer itself is hidden out of sight in the ceiling void, with a 100mm (4in.) dual coil bass driver pumping sound into the room via two ingenious flexible ports. There’s nothing discreet about the way it performs, though - by combining high quality drivers with innovative KEF engineering, response is fluid and accurate across the frequency range and the sound image has astonishing clarity and power for the speaker size.

Features and Benefits

The Ci50 Soundlight System combines 10-100W per channel power handling and 88dB sensitivity, for a maximum in-room SPL of 92dB. The Ci50 Soundlight System is purpose-built for flush mounting into Ceilings and ceilings. The Ci50R speakers are mounted with KEF’s standard lighting style fitting. It is available in White, Chrome, Brass or Brushed Steel bezels. The Ci50SW subwoofer is ceiling mounted by using the joist or suspended ceiling brackets included.


The Ci Series Ci50 Soundlight System is best suited where high quality background music and speech reinforcement applications require hi-fi performance such as:

• Multi Room systems
• Lounges, Bars, Boutiques
• Boardrooms & Offices

Architectural Specifications

The Ci Series Ci50 Soundlight System comprises four satellite Ci50R 50mm full range speakers and a band pass, dual ported Ci50SW subwoofer with a 100mm, dual coil bass unit, and passive crossovers, for in-ceiling void installation.

System performance should meet or exceed the following criteria: frequency response 1 metre on-axis with swept sinewave shall be 62Hz to 20kHz, system sensitivity shall be at least 88dB for 2.83V@1m, both channels driven.

The system impedance shall be 4 ohms.
Model     Ci50R Soundlight System
Nominal Impedance     4Ω
Sensitivity (2.83V @ 1m)     88dB
Frequency Response +/-6dB 2pi/open-backed     62 - 20kHz
Frequency Response +/-6dB With back can/rear enclosure     62 - 20kHz
Crossover Frequency     220Hz
Drive Units (LF / MF / HF)     100mm / 4 x 50mm / -
Recommended Amplifier Power     10-100W
Features     Subwoofer packaged with 4 x Ci50R in the Soundlight System
Product External Dimensions (Diameter / Width / Depth)     Subwoofer unit: 350mm / Subwoofer unit: 180mm / Subwoofer unit: 104mm
Cut-out Dimension (Diameter)     Soundlight: 65mm / Subwoofer: None
Mounting Depth from Surface (Product only / With back can)     Please see the product manual / -

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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