KEF Ci250RRb-THX In-Ceiling Architectural Subwoofer

KEF Ci250RRb-THX In-Ceiling Architectural Subwoofer - Image 2

KEF Ci250RRb-THX In-Ceiling Architectural Subwoofer - Image 3

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KEF Ci250RRb-THX In-Ceiling Architectural Subwoofer

Brand: KEF

₹142,000.00

The KEF Ci250RRb-THX is a high-performance in-ceiling architectural subwoofer designed for powerful, accurate low-frequency reproduction. Featuring an extra-long-throw 250mm (10 in.) bass driver with a massive 150oz magnet and THX® Certified Ultra performance, it delivers deep, controlled bass for premium music, movie and gaming systems.

Ci250RRb-THX

KEF Ci250RRb-THX In-Ceiling Architectural Subwoofer

The KEF Ci250RRb-THX is engineered to add deep, precise bass to premium architectural audio and home cinema systems. Its extra-long-throw 250mm (10 in.) low-frequency driver uses a massive 150oz magnet to deliver powerful low-frequency extension with excellent control. Designed for use with the KEF KASA500 amplifier, it reaches down to 20Hz at the specified KASA setting and extends to 16Hz at -10dB. THX® Certified Ultra performance, 109dB maximum SPL and configurable low-pass filtering make the Ci250RRb-THX an ideal partner for demanding music, movie and gaming installations.

Ci250RRb-THX

Details & Specifications

Design & Configuration

Brand	KEF
Model	Ci250RRb-THX
Product Type	In-Ceiling Architectural Subwoofer
THX Certification	THX® Certified Ultra
Safety & Regulatory Compliance	IP64

Drive Unit

Low-Frequency Driver	250mm (10 in.) Extra-Long-Throw
Magnet Weight	150oz
Mid-Frequency Driver	None
High-Frequency Driver	None

Frequency & Output

Frequency Response – Open Backed (±6dB)	20Hz – KASA Setting
Frequency Range (-10dB)	16Hz – KASA Setting
Maximum SPL	109dB
Recommended Low-Pass Filter	50Hz–120Hz

Amplification & Enclosure Requirements

Required Amplifier	KEF KASA500
Ideal Rear Volume	140L
Minimum Rear Volume	70L
Optional Rough-In Frame	Not Provided

Installation, Dimensions & Weight

External Diameter	Ø 346 mm / 13.62 in
External Depth	153 mm / 6 in
Cut-Out Diameter	Ø 300 mm / 11.81 in
Mounting Depth from Surface	147 mm / 5.8 in
Minimum Ceiling Thickness	6 mm / 0.24 in
Maximum Ceiling Thickness	30 mm / 1.18 in
Net Weight	5.6 kg / 12.3 lb

Downloads

About KEF

KEF is a British loudspeaker manufacturer known for developing advanced acoustic technologies focused on accurate, natural and highly detailed sound reproduction. Its engineering approach combines innovative driver design, cabinet development and extensive acoustic research across both traditional Hi-Fi and contemporary audio systems. Technologies such as Uni-Q® and Metamaterial Absorption Technology demonstrate KEF’s focus on improving dispersion, imaging and overall acoustic performance. From compact speakers to high-end reference designs, KEF develops products for listeners seeking precise stereo reproduction and immersive listening experiences.

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