KEF C40 Specification
| System type | 2.5-way |
| Enclosure type | Closed box |
| Frequency response ± 3dB | 68 - 20000 Hz |
| Nominal impedance | 8 Ohm |
| Amplifier Requirements | 10 - 100 W |
| Sensitivity (2.83V/1m) | 91 dB |
| Maximum output (SPL) | 111 dB |
| Tweeter | 33 mm (1-5/16 in.) |
| Midrange | 200 mm (8 in.) |
| Woofer | 200 mm (8 in.) |
| Dimensions (H x W x D) | 650 x 247 x 262 mm / 25.59 x 9.72 x 10.31 in. |
| Weight | 9.6 kg / 21.12 lbs. |
