Ci250RRM-THX

In-Ceiling Speakers

Nominal Impedance: 8 ohms
Sensitivity (2.83 V/1 m): 89 dB
Frequency Response (±6 dB, open-backed): 28 Hz - 20 kHz
Recommended Amplifier Power: 50 - 250 W
Product Dimensions: 346 mm diameter x 175 mm depth

All specifications

Price $4,000

Includes GST

Voted Australia's #1 Hi-Fi Retailer, Sound+Image Awards 2023. Family owned since 2010.

Planning a cinema around it?

Our designers match it to your room, screen and seating, then install and calibrate the lot. Start with it in our 3D builder, or talk to us.

Delivery and collection

Free standard shipping on orders of $300 or more within Australia, and $15 on smaller orders. Western Australia is quoted on request.

Pick up from our Belrose showroom: call ahead so we can have it ready.

Set-up and installation

Our team can deliver, install and set up your system, from speaker placement to a full cinema calibration. Ask us for a quote when you order.

Returns

Your rights under Australian Consumer Law always apply. Read our returns policy.

KEF Ci250RRM-THX

Specifications

Design: Three-way coaxial in-ceiling speaker, Ci-R Series
Drive Units: LF: 250 mm (10 in.), MF: 100 mm (4 in.) Uni-Q, HF: 19 mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology
Frequency Response (±6 dB, open-backed): 28 Hz - 20 kHz
Frequency Range (-10 dB): 20 Hz - 45 kHz
Crossover Frequencies: 540 Hz, 2.6 kHz
Sensitivity (2.83 V/1 m): 89 dB
Nominal Impedance: 8 ohms
Nominal Coverage: 120°
Maximum SPL (at 1 m): 111 dB
Recommended Amplifier Power: 50 - 250 W
Recommended High-Pass Filter: 30 - 60 Hz
Product Dimensions: 346 mm diameter x 175 mm depth
Cut-Out Dimensions: 300 mm diameter
Mounting Depth From Surface: 168 mm
Mounting Thickness: 6 mm minimum, 30 mm maximum
Ideal / Minimum Rear Volume: 150 L / 80 L
Net Weight: 6 kg
Dust and Water Rating: IP64
Certification: THX Certified Ultra
Unit: Sold individually

Installation

In-ceiling mounting, 300 mm round cut-out
Mounting depth from surface 168 mm, ceiling thickness 6 to 30 mm
Ideal rear volume 150 L, minimum rear volume 80 L
Ultra-Thin Bezel (UTB) with paintable magnetic grille
IP64 splash and dust rating

In detail

About the Ci250RRM-THX

Overview

The Ci250RRM-THX is a round, three-way coaxial in-ceiling speaker from KEF's Ci-R Series and KEF's first architectural speaker with Metamaterial Absorption Technology (MAT). It is THX Certified Ultra and is designed for large home theatres and living rooms.

A 100 mm 12th generation Uni-Q array sits in front of a 250 mm bass driver, using KEF's Cavity Radiation Control open-back midrange and a Low Diffraction LF Aperture to manage the coaxial three-way layout.

Drivers and Technology

Three-way coaxial design: 250 mm (10 in.) LF driver with a 100 mm Uni-Q midrange and 19 mm vented aluminium dome tweeter
Metamaterial Absorption Technology behind the tweeter, which KEF rates as absorbing 99% of unwanted rear sound
Cavity Radiation Control (patent pending) open-back midrange with absorptive foam
Low Diffraction LF Aperture with absorptive foam ring
Bass extension to 20 Hz (-10 dB) and maximum SPL of 111 dB, as rated by KEF
THX Certified Ultra

Cinema design

Part of something bigger.

The Ci250RRM-THX is one piece of a room. We design the screen, speakers, acoustics and seating around it, then install and calibrate the lot, so it all works as one.

Start a cinema with this

Voted Australia's #1 Hi-Fi Retailer, Sound+Image Awards 2023

Family owned since 2010: Talk to the people who will look after you.
Listen in Belrose: Private listening sessions, by appointment.
Designed and installed: Cinemas and listening rooms by our own team. (02) 8088 3088