Ci250RRb-THX

Ci250RRb-THX by KEF

Design: The Ci250RRb-THX is a high-performance, THX Certified Ultra subwoofer designed for in-ceiling installation, delivering powerful bass in home theater or music systems. This subwoofer is engineered for integration into KEF's custom installation lineup, featuring deep low-frequency performance while maintaining a discreet presence in any room.

Driver Configuration:

• Low-Frequency Driver (LF): 250mm (10in.) driver that delivers deep and powerful bass performance.

Frequency Response: With a frequency response of 20Hz (±6dB) under the KASA setting, this subwoofer extends to the lowest bass notes, while a frequency range of 16Hz (-10dB) ensures a full low-end presence.

Max SPL: The Ci250RRb-THX can reach a maximum sound pressure level (SPL) of 109dB, providing substantial output suitable for large rooms and cinematic experiences.

Amplifier Compatibility: Designed to work seamlessly with the KEF KASA500 amplifier, offering optimal power and control over the subwoofer's output.

Recommended Low-pass Filter: The subwoofer is optimized for a low-pass filter range between 50Hz and 120Hz, ensuring smooth integration with other speakers in your setup.

Dimensions:

• External Diameter: Ø346mm (13.62in.)
• Depth: 153mm (6in.)
• Cut-Out Diameter: Ø300mm (11.81in.)

Mounting Depth: The mounting depth from the surface is 147mm (5.8in.), providing a compact profile for in-ceiling installation.

Weight: The unit has a net weight of 5.6kg (12.3lbs), making it lightweight and easy to install.

Volume Requirements: For optimal performance, the subwoofer requires a recommended rear volume of 140 liters, with a minimum rear volume of 70 liters.

THX Certification: The THX® Certified Ultra status ensures that the Ci250RRb-THX meets the highest standards for home cinema audio quality.

Safety and Compliance: Rated with IP64 safety and regulatory compliance, the subwoofer is protected against dust and moisture, making it suitable for various environments.

Ceiling Thickness:

• Maximum: 30mm (1.18in.)
• Minimum: 6mm (0.24in.)

Optional Accessories: An optional rough-in frame is available for pre-installation planning.