

KEF Ci200QSb-THX In-Wall Subwoofer
Specifications
NOMINAL IMPEDANCE | 6 Ohm - Passive Mode (Crossover |
SENSITIVITY | 85dB - Passive Mode (Crossover |
FREQUENCY RESPONSE | 40Hz-100Hz - Passive Mode (Crossover |
CROSSOVER FREQUENCIES | 100Hz - Passive Mode (Crossover |
DRIVE UNITS | _200mm (8 in.) |
RECOMMENDED AMPLIFIER POWER | 10-150W - Passive Mode (Crossover |
PRODUCT EXTERNAL DIMENSIONS | _273 x 273 x 106 mm (10.75 x 10.75 x 4.17 in.) |
CUT-OUT DIMENSIONS | H x W: 238 x 238 mm (9.37 x 9.37 in.) |
MOUNTING DEPTH FROM SURFACE | 101.6mm (4 in.) |
OPTIONAL ROUGH IN FRAME | RIF200S |
NET WEIGHT | 3.3kg (7.28 lbs) |
Warranty
Shipping & Returns
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Our returns policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately, we may not be able to offer you a refund or exchange. For full details please see our Refund Policy.

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.
Ci200QSb-THX
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.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 pair of the Ci200QSb-THX subwoofer are powered by the powerful 250Wx 2 KEF KASA500 System Amplifier the performance meets THX Select2 specification. When 4 pair of the Ci200QSb-THX are powered by 2 KEF KASA500 System Amplifiers the performance meets THX Ultra2 specification.
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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