KEF Black Gloss SP4057A1AA
A variant of KEF Black Gloss
| Brand | KEF |
| Model | Black Gloss |
| Drivers | |
| Woofer | 2 x 130 mm (5.25 in.) hybrid aluminium cone |
| Woofer diameter (mm) | 130 |
| Midrange | 125 mm (5 in.) aluminium cone |
| Midrange diameter (mm) | 125 |
| Tweeter | 25 mm (1 in.) vented aluminium dome with MAT |
| Tweeter diameter (mm) | 25 |
| Frequency response | 67 Hz – 28000 Hz +3 −3 dB |
| Enclosure | |
| Sensitivity (dB) | 87 |
| Impedance (Ω) | 4 |
| Recommended amplifier power, least (W) | 15 |
| Recommended amplifier power, most (W) | 200 |
| Built-in amplifier power (W) | |
| Height (mm) | 175 |
| Width (mm) | 550 |
| Depth (mm) | 309 |
| Weight (kg) | 15.4 |