Certified to THX ULTRA2 and THX SELECT2 standards, 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.
KEF Ci R Series Ci200QSb THX Ultra2/Select2 In-Wall Subwoofer (Pair)
Certified to THX ULTRA2 and THX SELECT2 standards, 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.
Hide Your Speakers, Not Your Sound
KEF approaches the development of architectural loudspeakers with the same diligence as any other model; our passion for acoustic excellence wouldn’t allow anything else. The combination of innovative engineering and sophisticated acoustic design ensures KEF’s architectural speakers offer as compelling a performance as its stand-alone hi-fi speakers.  
Designed for Theater Performance
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 Ci series in-wall or in-ceiling speakers. In Active mode, when 2 pairs of the Ci200QSb-THX subwoofer are powered by the powerful 250Wx 2 KEF KASA500 System Amplifier the performance meets THX Select2 specification. When 4 pairs of the Ci200QSb-THX are powered by 2 KEF KASA500 System Amplifiers the performance meets THX Ultra2 specification. 
Quick and Easy to Install
KEF’s patented tension legs offer a firm and stable grip to any wall or ceiling cavity while making it a one-handed installation - quick and simple.
Key Features
THX Certified Ultra2 / Select2
200mm (8in.) woofer unit with extended bass response
Paintable Ultra-Thin Bezel (UTB) and magnetic grille to blend unobtrusively with décor
Fast, versatile installation on virtually any surface via dogleg
Can be used in passive mode with internal crossover or active mode with KEF’s KASA500 System Amplifier for THX certified performance
Sold in Pairs
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