Kef Ci200QSB Certified Ultra 200mm Subwoofer

THX Certified to the level of Ultra and Select, the formidable Ci200QSb-THX in-wall subwoofer delivers deep bass and theatre thumping output capabilities, matched to the uncanny ability to deliver all the drama and emotional intensity of full theatre sound quality. With a powerful high-output 200mm (8in.) sub-bass driver, the Ci200QSb-THX can be used in passive mode to supplement the LF output of KEF’s in-wall or in-ceiling speakers. In Active mode, when 2 pairs of the Ci200QSb-THX subwoofer are powered by 2 KEF KASA500 System Amplifiers the performance meets THX Certified Select specification. When 4 pairs of the Ci200QSb-THX are powered by 2 KEF KASA500 System Amplifiers the performance meets THX Certified Ultra specification.

Ci200QSb-THX is a THX Certified Ultra in-wall subwoofer. A deep understanding of the filmmaking process and surround sound is at the very heart of every THX^® certified speaker system. Engineered with design characteristics of professional studio speakers, THX^® recreates the tonal balance of the filmmaker's final mix in your living room. The results? Action sequences are impactful, and dialogue-driven moments are natural and engaging.

THX^® certified subwoofers deliver the appropriate frequency response and high output and imaging quality of a traditional box speaker. This provides the best of both worlds - THX^® surround sound performance from components that blend harmoniously with any interior.

Technical Specifications

Spec	Details
Model	Ci200QSb-THX
Nominal Impedance	6 Ohm – Passive Mode (Crossover ON)N/A – Active Mode (KASA500)
Sensitivity	85dB – Passive Mode (Crossover ON)N/A – Active Mode (KASA500)
Crossover Frequency	100Hz – Passive Mode (Crossover ON)N/A – Active Mode (KASA500)
Frequency Response	40Hz – 100Hz – Passive Mode (Crossover ON)18Hz – 140Hz – Active Mode (KASA500)
Drive Units	LF: 200mm (8 in.)
Recommended Amplifier Power	10 – 150W – Passive Mode (Crossover ON)KASA500 – Active Mode (KASA500)
Product External Dimensions (H × W × D)	273 × 273 × 106 mm (10.75 × 10.75 × 4.17 in.)
Cut-Out Dimensions (H × W)	238 × 238 mm (9.37 × 9.37 in.)
Mounting Thickness	Ceiling Thickness (Maximum): 40mm (1.58 in.)Ceiling Thickness (Minimum): 6mm (0.24 in.)
Mounting Depth From Surface	101.6mm (4.0 in.)
Optional Rough-In Frame	RIF200S
Net Weight	3.3kg (7.28 lbs.)
Unit Measurement	Piece