Ci200QSb-THX

Add deep, cinematic bass to an invisible system. The Ci200QSb-THX is engineered as an in-wall subwoofer, delivering solid low-frequency performance and theater-like impact while remaining completely hidden.

It features a 200mm (8”) high-output bass driver, designed to enhance the low-end of in-wall or in-ceiling speakers, making it a key component in architectural home theater setups. 

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The KEF Ci200QSb-THX is a discreet in-ceiling subwoofer designed to deliver powerful and controlled low-frequency performance while remaining virtually invisible within the room. Engineered for custom installation applications, it provides the bass foundation required for immersive home theater and music systems without occupying valuable floor space.

THX Certified Select performance ensures that the Ci200QSb-THX can reproduce deep and impactful bass with the accuracy and consistency required for demanding entertainment environments. Its dual long-throw 8-inch drivers are optimized to deliver impressive output while maintaining excellent control and low distortion across the operating range.

The subwoofer features a rigid aluminum baffle structure that minimizes resonance and unwanted vibration, helping preserve clarity and definition during dynamic movie soundtracks and complex musical passages. This robust construction contributes to a clean and articulate low-frequency presentation that integrates seamlessly with compatible architectural loudspeakers.

Designed for modern media rooms, family rooms, and dedicated theater installations, the Ci200QSb-THX combines architectural discretion with high-performance bass reproduction. Its low-profile, paintable grille allows it to blend effortlessly into the ceiling, making it an ideal solution for listeners seeking premium low-frequency performance without compromising interior aesthetics.

  • Speaker Type: In-Ceiling Architectural Subwoofer

  • Certification: THX Certified Select

  • Driver Configuration: Dual 8" Long-Throw Woofers

  • Frequency Response: 30Hz–200Hz

  • Nominal Impedance: 4 Ohms

  • Recommended Amplifier Power: 50–300W

  • High-Rigidity Aluminum Baffle

  • Shallow Installation Depth

  • Paintable Magnetic Grille

  • Designed for Custom Home Theater and Media Room Installations