KEF Ci 100 QS, Square Ceiling Speaker, 4 Ohm
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Select the Ci 100 QS by matching the cut-out, mounting depth, nominal impedance and recommended amplifier range to the installation.
Typical applications
- In-wall or in-ceiling architectural audio installation
- Replacement where the exact cut-out, depth and impedance match
Full specifications
| Nominal impedance | 4 Ω |
|---|---|
| Sensitivity (2.83 V/1 m) | 88 dB |
| Frequency response | 80–27000 Hz (±6 dB, open-backed) |
| Maximum SPL | 103 dB |
| Recommended amplifier power | 10–50 W |
| Cut-out | 112 × 112 mm |
| Product external dimensions | 127 × 127 × 76 mm |
| Mounting depth from surface | 72 mm |
| Optional rough-in frame | RIF100S |
Installation and cabinet guidance
Confirm the exact cut-out, mounting depth and panel thickness in the manufacturer sheet before cutting. Use the listed optional enclosure or rough-in frame only where applicable.
Disconnect the amplifier before wiring, observe polarity and use amplification suitable for the published nominal impedance.
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