KEF

KEF Ci100QS 4 Inch In-Ceiling Speaker

Model Ci100QS

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Availability: In Stock

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  • 100 mm (4 in.) bass/midrange driver
  • 80 to 27 kHz (±6 dB) open-backed frequency response, 88 dB sensitivity
  • 4 Ω nominal impedance, 10 to 50 W recommended amplifier power
  • 112 × 112 mm (4.41 × 4.41 in.) (H × W) cut-out for flush in-ceiling mounting
KEF Ci100QS in-ceiling speaker, view
  • Authorized KEF Reseller
  • Manufacturer Warranty
  • Fast UAE Delivery
  • Expert Project Support
Delivery, Warranty, Returns and Installation
Delivery
Fast UAE Delivery: Same-Day or Next-Day Delivery Available, Subject to Product Availability and Location. Free Delivery on Orders Above AED 2,000.
Warranty
Manufacturer Warranty with Local UAE Support where applicable.
Returns
B2B Orders are non-returnable. Please confirm product specifications and compatibility before ordering.
Installation
Site Surveys, System Design and Professional Installation are available across the UAE.
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Product details

Overview

What is the KEF Ci100QS?

The KEF Ci100QS is a 4 inch in-ceiling speaker with a 100 mm (4 in.) bass/midrange driver. It has 88 dB sensitivity, 4 Ω nominal impedance and a 112 × 112 mm (4.41 × 4.41 in.) (H × W) cut-out. Fit-out teams, installers and AV integrators in the UAE specify it for flush-mounted music and background audio in finished rooms.

The KEF Ci100QS is an in-ceiling architectural speaker from KEF with 100 mm (4 in.) bass/midrange driver and 19 mm (0.75 in.) tweeter. It covers 80 to 27 kHz (±6 dB) open-backed at 88 dB sensitivity.

Why this product

Key Benefits

  • 100 mm (4 in.) bass/midrange driver

    KEF lists 100 mm (4 in.) bass/midrange driver and 19 mm (0.75 in.) tweeter.

  • Frequency response

    KEF lists 80 to 27 kHz (±6 dB) open-backed and 88 dB sensitivity.

  • Amplifier matching

    Recommended amplifier power 10 to 50 W at 4 Ω nominal impedance.

  • Flush-mount cut-out

    The cut-out is 112 × 112 mm (4.41 × 4.41 in.) (H × W). Ceiling thickness 6 mm (0.24 in.) to 24 mm (0.95 in.); mounting depth from surface without back can : 72 mm (2.83 in.).

  • Optional installation accessories

    Rough-in frame RIF100S and rear enclosure RNC100S are listed by KEF for this model.

Use cases

Applications

  • In-ceiling installations

    The KEF Ci100QS mounts flush in a ceiling, so the speaker sits in the finished surface.

  • New-build and retrofit planning

    KEF lists optional rough-in frame RIF100S and rear enclosure RNC100S for this speaker.

  • Passive systems on a standard amplifier

    With 10 to 50 W recommended amplifier power at 4 Ω it suits a conventional low-impedance amplifier.

Technical details

Technical Specifications

System

System Type
Two-way in-ceiling architectural speaker
Driver
100 mm (4 in.) bass/midrange driver and 19 mm (0.75 in.) tweeter
Crossover Frequency
3 kHz

Frequency

Frequency Range
80 to 27 kHz (±6 dB) open-backed

Performance & Coverage

Sensitivity
88 dB (2.83 V, 1 m)

Power

Nominal Impedance
4 Ω
Power Handling
Recommended amplifier power 10 to 50 W

Physical

Cutout Dimensions
112 × 112 mm (4.41 × 4.41 in.) (H × W)
Mounting
Ceiling thickness 6 mm (0.24 in.) to 24 mm (0.95 in.); mounting depth from surface without back can : 72 mm (2.83 in.)
Dimensions
127 × 127 × 76 mm (5.0 × 5.0 × 2.99 in.) (H × W × D)
Weight
0.67 kg (1.48 lb)

Included & Optional Accessories

Optional Accessories
Rough-in frame RIF100S; Rear enclosure RNC100S

Installation

Installation & Mounting

Installation

  • Cut-out: 112 × 112 mm (4.41 × 4.41 in.) (H × W).
  • Ceiling thickness 6 mm (0.24 in.) to 24 mm (0.95 in.); mounting depth from surface without back can : 72 mm (2.83 in.).
  • Optional accessories listed by KEF: Rough-in frame RIF100S and Rear enclosure RNC100S.

Ownership and support

Ownership & Support

Warranty

The KEF Ci100QS is covered by the standard KEF manufacturer warranty. The exact warranty term is confirmed at order.

Complete your solution

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All orders are final sale. Read our Refund policy.

Expert FAQs

What cut-out size does the KEF Ci100QS need and how is it mounted?

The KEF Ci100QS mounts flush in a ceiling and needs a 112 × 112 mm (4.41 × 4.41 in.) (H × W) cut-out. External dimensions are 127 × 127 × 76 mm (5.0 × 5.0 × 2.99 in.) (H × W × D).

How is the KEF Ci100QS mounted and what ceiling thickness does it fit?

KEF lists ceiling thickness 6 mm (0.24 in.) to 24 mm (0.95 in.) and a mounting depth of Without back can : 72 mm (2.83 in.) from the surface.

Which amplifier power suits the KEF Ci100QS?

KEF recommends 10 to 50 W per speaker at 4 Ω nominal impedance.

What is the frequency response of the KEF Ci100QS?

The KEF Ci100QS has a frequency response of 80 to 27 kHz (±6 dB) open-backed and 88 dB (2.83 V, 1 m) sensitivity.

Are there optional accessories for the KEF Ci100QS?

KEF lists the rough-in frame RIF100S and the rear enclosure RNC100S as optional for this model.

How big and heavy is the KEF Ci100QS?

The KEF Ci100QS measures 127 × 127 × 76 mm (5.0 × 5.0 × 2.99 in.) (H × W × D) and weighs 0.67 kg (1.48 lb).

What is the nominal impedance of the KEF Ci100QS?

The KEF Ci100QS has a nominal impedance of 4 Ω. KEF lists no transformer taps for it, so it is driven as a low-impedance passive speaker.

Where can I buy the KEF Ci100QS in the UAE?

CorporateAV.ae is a supplier of genuine KEF products in the UAE and delivers the KEF Ci100QS same-day or next-day across the UAE, subject to availability and location. Request a Project Quote on this page, call +971 56 498 8088, WhatsApp us or email info@corporateav.ae. Phone: +971 56 498 8088. Email: info@corporateav.ae.