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SKU SP3894AA
KEF - Ci200QSb-THX - In-Wall Subwoofers
by KEF
$1,400.00
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Overview
The Ci200QSb-THX is a square Ci-Q Series in-wall subwoofer with a 200 mm high-output sub-bass driver, sold as a pair. It can run in passive mode through its internal crossover to add low-frequency output to KEF in-wall or in-ceiling speakers, or in active mode driven by KEF's KASA500 amplifier (sold separately).
In active mode, KEF specifies two pairs on two KASA500 amplifiers for THX Certified Select performance, and four pairs on two KASA500 amplifiers for THX Certified Ultra.
Drivers and Technology
- 200 mm (8 in.) woofer with extended bass response
- Passive mode with internal 100 Hz crossover, or active mode with the KEF KASA500 amplifier
- THX Certified Ultra / THX Certified Select in active mode, depending on configuration
THX System Configurations (per KEF)
- Medium room, THX Certified Select (up to 2,000 cubic feet): 4 x Ci200QSb-THX (2 pairs) with KASA500 amplification
- Large room, THX Certified Ultra (up to 3,000 cubic feet): 8 x Ci200QSb-THX (4 pairs) with 2 x KASA500
Installation
- In-wall mounting, square cut-out 238 x 238 mm
- Mounting depth from surface 101.6 mm
- Ideal rear volume 32 L, minimum rear volume 20 L, per subwoofer (KEF advises doubling for a pair in one space)
- Optional RIF200S rough-in frame (sold separately)
- Ultra-Thin Bezel (UTB) with paintable magnetic grille
- IP64 dust and water rating
Specifications
| Design | Square in-wall subwoofer, passive or active (KASA500), Ci-Q Series |
| Drive Units | LF: 200 mm (8 in.) |
| Frequency Response, Passive Mode (±6 dB) | 40 Hz - 100 Hz |
| Frequency Response, Active Mode (±6 dB) | 18 Hz - 140 Hz (KEF product page); 30 Hz - 140 Hz (KEF spec sheet) |
| Frequency Range (-10 dB) | Passive: 29 Hz - 140 Hz; Active: 25 Hz - KASA500 setting |
| Crossover Frequency, Passive Mode | 100 Hz |
| Sensitivity, Passive Mode (2.83 V/1 m) | 85 dB |
| Nominal Impedance, Passive Mode | 6 ohms |
| Maximum SPL | 104 dB |
| Recommended Amplifier Power | Passive: 10 - 150 W; Active: KEF KASA500 |
| Recommended Low-Pass Filter | Passive: 80 Hz - 120 Hz; Active: 50 Hz - 120 Hz |
| Product Dimensions (H x W x D) | 273 x 273 x 106 mm (each) |
| Cut-Out Dimensions (H x W) | 238 x 238 mm |
| Mounting Depth From Surface | 101.6 mm |
| Ideal / Minimum Rear Volume | 32 L / 20 L per subwoofer |
| Optional Rough-In Frame | RIF200S |
| Net Weight | 3.3 kg each (6.6 kg pair) |
| Dust and Water Rating | IP64 |
| Certification | THX Certified Ultra, THX Certified Select (active mode) |
| Unit | Sold as a pair |
